mirror of
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fix x, add history
This commit is contained in:
David MacKenzie
parent
69a53ee988
commit
d5c63cb83e
11
TODO
11
TODO
@ -18,8 +18,7 @@ Required for 2.0:
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------------------------------------------------------------------------------
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* Fix AC_ARG_{ENABLE,WITH}, and AC_PATH_X*, and AC_REQUIRE
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interrupting messages.
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* Fix AC_ARG_{ENABLE,WITH}, and AC_REQUIRE interrupting messages.
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------------------------------------------------------------------------------
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@ -39,6 +38,14 @@ functions (POSIX, NIS) that do everything necessary, instead.
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------------------------------------------------------------------------------
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* Add a --indent option to autoconf to call shindent.
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------------------------------------------------------------------------------
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* Doc: Add indexes of concepts, env vars.
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------------------------------------------------------------------------------
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* Supply a template Makefile.in that people can adapt (what GNU hello
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was going to be).
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157
acspecific.m4
157
acspecific.m4
@ -1444,45 +1444,48 @@ fi
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dnl
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AC_DEFUN(AC_PATH_X,
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[AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally.
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# If we find X, set shell vars x_includes and x_libraries to the paths.
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no_x=yes
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if test "x$with_x" != xno; then
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# If we find X, set shell vars x_includes and x_libraries to the
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# paths, otherwise set no_x=yes.
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# Uses ac_ vars as temps to allow command line to override cache and checks.
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# --without-x overrides everything else, but does not touch the cache.
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AC_MSG_CHECKING(for X)
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# Command line options override cache.
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# FIXME We need to allow --x=includes= to work, I think.
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test -n "$x_includes" && ac_cv_x_includes="$x_includes"
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test -n "$x_libraries" && ac_cv_x_includes="$x_libraries"
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if test "${ac_cv_x_includes+set}" = set &&
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test "${ac_cv_x_libraries+set}" = set; then
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AC_VERBOSE(using cached values for ac_cv_x_includes and ac_cv_x_libraries)
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if test "x$with_x" = xno; then
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no_x=yes
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else
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if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
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no_x=
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else
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AC_CACHE_VAL(ac_cv_path_x,
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[# One or both of the vars are not set, and there is no cached value.
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no_x=yes
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AC_PATH_X_XMKMF
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fi
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if test "${ac_cv_x_includes+set}" != set ||
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test "${ac_cv_x_libraries+set}" != set; then
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if test "$no_x" = yes; then
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AC_PATH_X_DIRECT
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fi
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test -z "$ac_cv_x_includes" && ac_cv_x_includes=NONE
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test -z "$ac_cv_x_libraries" && ac_cv_x_libraries=NONE
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if test "$no_x" = yes; then
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ac_cv_path_x="no_x=yes"
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else
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ac_cv_path_x="no_x= ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
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fi])dnl
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fi
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eval "$ac_cv_path_x"
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fi # $with_x != no
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# FIXME can we reliably distinguish cache values that are set to empty
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# from those that aren't set?
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if test -z "$x_includes" && test "$ac_cv_x_includes" != NONE; then
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x_includes="$ac_cv_x_includes"
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if test "$no_x" = yes; then
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AC_MSG_RESULT(no)
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else
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test "x$x_includes" = xNONE && x_includes=$ac_x_includes
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test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
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ac_cv_path_x="no_x= ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
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AC_MSG_RESULT([libraries $x_libraries, headers $x_includes])
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fi
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if test -z "$x_libraries" && test "$ac_cv_x_libraries" != NONE; then
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x_libraries="$ac_cv_x_libraries"
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fi
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test -n "$x_includes" && AC_VERBOSE(X11 headers are in $x_includes)
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test -n "$x_libraries" && AC_VERBOSE(X11 libraries are in $x_libraries)
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fi # No --with-x=no.
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])dnl
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dnl
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dnl Internal subroutine of AC_PATH_X.
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dnl Set ac_x_includes, ac_x_libraries, and no_x (initially yes).
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AC_DEFUN(AC_PATH_X_XMKMF,
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[AC_CHECKING(for X include and library files with xmkmf)
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rm -fr conftestdir
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[rm -fr conftestdir
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if mkdir conftestdir; then
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cd conftestdir
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# Make sure to not put "make" in the Imakefile rules, since we grep it out.
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@ -1501,11 +1504,11 @@ EOF
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fi
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case "$ac_im_incroot" in
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/usr/include) ;;
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*) test -z "$ac_cv_x_includes" && ac_cv_x_includes="$ac_im_incroot" ;;
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*) ac_x_includes="$ac_im_incroot" ;;
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esac
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case "$ac_im_usrlibdir" in
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/usr/lib | /lib) ;;
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*) test -z "$ac_cv_x_libraries" && ac_cv_x_libraries="$ac_im_usrlibdir" ;;
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*) ac_x_libraries="$ac_im_usrlibdir" ;;
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esac
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fi
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cd ..
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@ -1514,12 +1517,12 @@ fi
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])dnl
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dnl
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dnl Internal subroutine of AC_PATH_X.
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dnl Set ac_x_includes, ac_x_libraries, and no_x (initially yes).
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AC_DEFUN(AC_PATH_X_DIRECT,
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[AC_CHECKING(for X include and library files directly)
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test -z "$x_direct_test_library" && x_direct_test_library=Xt
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[test -z "$x_direct_test_library" && x_direct_test_library=Xt
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test -z "$x_direct_test_include" && x_direct_test_include=X11/Intrinsic.h
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AC_TRY_CPP([#include <$x_direct_test_include>], no_x=,
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for ac_dir in \
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AC_TRY_CPP([#include <$x_direct_test_include>], [no_x= ac_x_includes=],
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[ for ac_dir in \
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/usr/X11R6/include \
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/usr/X11R5/include \
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/usr/X11R4/include \
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@ -1557,16 +1560,15 @@ AC_TRY_CPP([#include <$x_direct_test_include>], no_x=,
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; \
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do
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if test -r "$ac_dir/$x_direct_test_include"; then
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test -z "$ac_cv_x_includes" && ac_cv_x_includes=$ac_dir
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no_x=
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no_x= ac_x_includes=$ac_dir
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break
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fi
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done)
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done])
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# Check for the libraries. First see if replacing the include by
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# lib works.
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AC_HAVE_LIBRARY("$x_direct_test_library", no_x=,
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for ac_dir in `echo "$ac_cv_x_includes" | sed s/include/lib/` \
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AC_CHECK_LIB("$x_direct_test_library", main, [no_x= ac_x_libraries=],
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[for ac_dir in `echo "$ac_x_includes" | sed s/include/lib/` \
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/usr/X11R6/lib \
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/usr/X11R5/lib \
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/usr/X11R4/lib \
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@ -1605,61 +1607,58 @@ for ac_dir in `echo "$ac_cv_x_includes" | sed s/include/lib/` \
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do
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for ac_extension in a so sl; do
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if test -r $ac_dir/lib${x_direct_test_library}.$ac_extension; then
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test -z "$ac_cv_x_libraries" && ac_cv_x_libraries=$ac_dir
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no_x=
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no_x= ac_x_libraries=$ac_dir
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break 2
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fi
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done
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done)])dnl
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done])])dnl
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dnl
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dnl Find additional X libraries, magic flags, etc.
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AC_DEFUN(AC_PATH_XTRA,
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[AC_REQUIRE([AC_OS_ISC])dnl
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AC_REQUIRE([AC_PATH_X])dnl
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AC_CHECKING(for additional X libraries and flags)
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if test -n "$x_includes"; then
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X_CFLAGS="$X_CFLAGS -I$x_includes"
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elif test "$no_x" = yes; then
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if test "$no_x" = yes; then
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# Not all programs may use this symbol, but it does not hurt to define it.
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X_CFLAGS="$X_CFLAGS -DX_DISPLAY_MISSING"
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fi
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# It would be nice to have a more robust check for the -R ld option than
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# just checking for Solaris.
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# It would also be nice to do this for all -L options, not just this one.
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if test -n "$x_libraries"; then
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X_LIBS="$X_LIBS -L$x_libraries"
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if test "`(uname) 2>/dev/null`" = SunOS &&
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uname -r | grep '^5' >/dev/null; then
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X_LIBS="$X_LIBS -R$x_libraries"
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fi
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fi
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# Check for additional X libraries.
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if test "$ISC" = yes; then
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X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
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else
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# Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
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# libraries were built with DECnet support. And karl@cs.umb.edu says
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# the Alpha needs dnet_stub (dnet does not exist).
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AC_CHECK_LIB(dnet, dnet_ntoa,
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[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet" ac_have_dnet=yes], ac_have_dnet=no)
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if test "$ac_have_dnet" = no; then
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AC_CHECK_LIB(dnet_stub, dnet_ntoa,
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[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
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if test -n "$x_includes"; then
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X_CFLAGS="$X_CFLAGS -I$x_includes"
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fi
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# lieder@skyler.mavd.honeywell.com says without -lsocket,
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# socket/setsockopt and other routines are undefined under SCO ODT 2.0.
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# But -lsocket is broken on IRIX, according to simon@lia.di.epfl.ch.
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if test "`(uname) 2>/dev/null`" != IRIX; then
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AC_CHECK_LIB(socket, socket, [X_EXTRA_LIBS="$X_EXTRA_LIBS -lsocket"])
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# It would be nice to have a more robust check for the -R ld option than
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# just checking for Solaris.
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# It would also be nice to do this for all -L options, not just this one.
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if test -n "$x_libraries"; then
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X_LIBS="$X_LIBS -L$x_libraries"
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if test "`(uname) 2>/dev/null`" = SunOS &&
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uname -r | grep '^5' >/dev/null; then
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X_LIBS="$X_LIBS -R$x_libraries"
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fi
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fi
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# Check for additional X libraries.
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if test "$ISC" = yes; then
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X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
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else
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# Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
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# libraries were built with DECnet support. And karl@cs.umb.edu says
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# the Alpha needs dnet_stub (dnet does not exist).
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AC_CHECK_LIB(dnet, dnet_ntoa,
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[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet" ac_have_dnet=yes], ac_have_dnet=no)
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if test "$ac_have_dnet" = no; then
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AC_CHECK_LIB(dnet_stub, dnet_ntoa,
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[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
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fi
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# lieder@skyler.mavd.honeywell.com says without -lsocket,
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# socket/setsockopt and other routines are undefined under SCO ODT 2.0.
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# But -lsocket is broken on IRIX, according to simon@lia.di.epfl.ch.
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if test "`(uname) 2>/dev/null`" != IRIX; then
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AC_CHECK_LIB(socket, socket, [X_EXTRA_LIBS="$X_EXTRA_LIBS -lsocket"])
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fi
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fi
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fi
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#
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AC_VERBOSE(X compiler flags: $X_CFLAGS)
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AC_VERBOSE(X library flags: $X_LIBS)
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AC_VERBOSE(extra X libraries: $X_EXTRA_LIBS)
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AC_SUBST(X_CFLAGS)dnl
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AC_SUBST(X_LIBS)dnl
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AC_SUBST(X_EXTRA_LIBS)dnl
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233
autoconf.texi
233
autoconf.texi
@ -105,6 +105,7 @@ package. This is edition @value{EDITION}, for Autoconf version @value{VERSION}.
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* Site Default Values:: Providing local defaults for @code{configure}.
|
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* Old Macro Names:: Backward compatibility macros.
|
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* Example:: Sample Autoconf input files.
|
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* History:: History of Autoconf.
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* Preprocessor Symbol Index:: Index of C preprocessor symbols defined.
|
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* Macro Index:: Index of Autoconf macros.
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@ -189,6 +190,14 @@ An Example
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* Sample configure.in:: An example of a @file{configure} template.
|
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* Sample Makefile.in:: An example of a @file{Makefile} template.
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||||
|
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History of Autoconf
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||||
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* Genesis:: Prehistory and naming of @code{configure}.
|
||||
* Exodus:: The plagues of @code{m4} and Perl.
|
||||
* Leviticus:: The priestly code of portability arrives.
|
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* Numbers:: Listing of growth and contributors.
|
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* Deuteronomy:: Approaching the promises of easy configuration.
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@end menu
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@node Introduction, Distributing, Top, Top
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@ -1239,12 +1248,12 @@ library, in case only some of them use the code in @code{LIBOBJS}.
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If this macro finds @file{alloca.h}, it defines @code{HAVE_ALLOCA_H}.
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This macro does not try to get @code{alloca} from the SVR3 @file{libPW}
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or the SVR4 @file{libucb} because those libraries contain some
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incompatible functions that cause trouble. Some versions do not even
|
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contain @code{alloca} or contain a buggy version. If you still want to
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use their @code{alloca}, use @code{ar} to extract @file{alloca.o} from
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them instead of compiling @file{alloca.c}.
|
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This macro does not try to get @code{alloca} from the System V R3
|
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@file{libPW} or the System V R4 @file{libucb} because those libraries
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contain some incompatible functions that cause trouble. Some versions
|
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do not even contain @code{alloca} or contain a buggy version. If you
|
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still want to use their @code{alloca}, use @code{ar} to extract
|
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@file{alloca.o} from them instead of compiling @file{alloca.c}.
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Source files that use @code{alloca} should start with a piece of code
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like the following, to declare it properly. Note that in some versions
|
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@ -2958,19 +2967,21 @@ error (in case the file doesn't exist) of @code{grep} to
|
||||
whether it found a match.
|
||||
|
||||
To check whether the Autoconf macros have already defined a certain C
|
||||
preprocessor symbol, you can use a @code{case} statement like this:
|
||||
preprocessor symbol, test the value of the appropriate cache variable,
|
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as in this example:
|
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@example
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case "$DEFS" in
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*HAVE_FOO*) ;;
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*) LIBOBJS="$LIBOBJS foo.o" ;;
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esac
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AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF))
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if test "$ac_cv_func_vprintf" != yes; then
|
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AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT))
|
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fi
|
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@end example
|
||||
|
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@noindent
|
||||
Make sure to enclose the variable name you are checking (usually
|
||||
@code{DEFS}) in double quotes, because otherwise some old versions of
|
||||
@code{bash} misinterpret the statement.
|
||||
Unlike in Autoconf version 1, there is no shell variable @code{DEFS} set
|
||||
while @code{configure} is running. This difference is because properly
|
||||
quoting the contents of that variable turned out to be too cumbersome to
|
||||
do every time @code{AC_DEFINE} is called.
|
||||
|
||||
@node Test Programs, Multiple Cases, Checking for Symbols, Writing Macros
|
||||
@section Test Programs
|
||||
@ -3805,7 +3816,7 @@ removed
|
||||
@code{AC_OS_DYNIX}
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||||
@end table
|
||||
|
||||
@node Example, Preprocessor Symbol Index, Old Macro Names, Top
|
||||
@node Example, History, Old Macro Names, Top
|
||||
@chapter An Example
|
||||
|
||||
Here are sample @file{configure.in} and @file{Makefile.in} files, to
|
||||
@ -3889,8 +3900,8 @@ RTAPELIB = @@RTAPELIB@@
|
||||
CFLAGS = -g
|
||||
LDFLAGS = -g
|
||||
|
||||
prefix = /usr/local
|
||||
exec_prefix = $(prefix)
|
||||
prefix = @@prefix@@
|
||||
exec_prefix = @@exec_prefix@@
|
||||
binprefix =
|
||||
manprefix =
|
||||
|
||||
@ -3986,7 +3997,193 @@ dist: $(DISTFILES)
|
||||
rm -rf `cat .fname` .fname
|
||||
@end example
|
||||
|
||||
@node Preprocessor Symbol Index, Macro Index, Example, Top
|
||||
@node History, Preprocessor Symbol Index, Example, Top
|
||||
@chapter History of Autoconf
|
||||
|
||||
You may be wondering, Why was Autoconf originally written? How did it
|
||||
get into its present form? (Why does it look like gorilla spit?) If
|
||||
you're not wondering, then this chapter contains no information useful
|
||||
to you, and you might as well skip it. If you @emph{are} wondering,
|
||||
then let there be light.
|
||||
|
||||
@menu
|
||||
* Genesis:: Prehistory and naming of @code{configure}.
|
||||
* Exodus:: The plagues of @code{m4} and Perl.
|
||||
* Leviticus:: The priestly code of portability arrives.
|
||||
* Numbers:: Listing of growth and contributors.
|
||||
* Deuteronomy:: Approaching the promises of easy configuration.
|
||||
@end menu
|
||||
|
||||
@node Genesis, Exodus, , History
|
||||
@section Genesis
|
||||
|
||||
In June 1991 I was maintaining many of the GNU utilities for the Free
|
||||
Software Foundation. As they were ported to more platforms and more
|
||||
programs were added, the number of @samp{-D} options that users had to
|
||||
select in the @file{Makefile} (around 20) became burdensome. Especially
|
||||
for me---I had to test each new release on a bunch of different systems.
|
||||
So I wrote a little shell script to guess some of the correct settings
|
||||
for the fileutils package, and released it as part of fileutils 2.0.
|
||||
That @code{configure} script worked well enough that the next month I
|
||||
adapted it (by hand) to create similar @code{configure} scripts for
|
||||
several other GNU utilities packages. Brian Berliner also adapted one
|
||||
of my scripts for his CVS revision control system.
|
||||
|
||||
Later that summer, I learned that Richard Stallman and Richard Pixley
|
||||
were developing similar scripts to use in the GNU compiler tools; so I
|
||||
adapted my @code{configure} scripts to support their evolving interface:
|
||||
using the file name @file{Makefile.in} as the templates; adding
|
||||
@samp{+srcdir}, the first option (of many); and creating
|
||||
@file{config.status} files.
|
||||
|
||||
@node Exodus, Leviticus, Genesis, History
|
||||
@section Exodus
|
||||
|
||||
As I got feedback from users, I incorporated many improvements, using
|
||||
Emacs to search and replace, cut and paste, similar changes in each of
|
||||
the scripts. As I adapted more GNU utilities packages to use
|
||||
@code{configure} scripts, updating them all by hand became burdensome.
|
||||
Rich Murphey, the maintainer of the GNU graphics utilities, sent me mail
|
||||
saying that the @code{configure} scripts were great, and asking if I had
|
||||
a program for generating them that I could send him. No, I thought, but
|
||||
I should! So I started to work out how to generate them. And the
|
||||
journey from the bondage of hand-written @file{configure} scripts to the
|
||||
promise of Autoconf began.
|
||||
|
||||
I looked briefly into using Larry Wall's Metaconfig program, but I
|
||||
decided not to for several reasons. The @code{Configure} scripts it
|
||||
produces are interactive, which I find quite inconvenient; I didn't like
|
||||
the ways it checked for some features (such as library functions); it
|
||||
was not being maintained, and its scripts didn't work on many modern
|
||||
systems (such as System V R4 and NeXT); it wasn't very flexible in what
|
||||
it could do in response to a feature's presence or absence; I found it
|
||||
confusing to learn; and it was too big and complex for my needs (I
|
||||
didn't realize then how much Autoconf would eventually have to grow). I
|
||||
considered using Perl to generate my style of @code{configure} scripts,
|
||||
but decided that @code{m4} was better suited to the job of simple
|
||||
textual substitutions: it gets in the way less, because output is
|
||||
implicit. Plus, everyone already has it. (Initially I didn't rely on
|
||||
the GNU extensions to @code{m4}.) Also, some of my friends at the
|
||||
University of Maryland had recently been putting @code{m4} front ends on
|
||||
several programs, including @code{tvtwm}, and I was interested in trying
|
||||
out a new language.
|
||||
|
||||
@node Leviticus, Numbers, Exodus, History
|
||||
@section Leviticus
|
||||
|
||||
Since my @code{configure} scripts determine the system's capabilities
|
||||
automatically, with no interactive user intervention, I decided to call
|
||||
the program that generates them Autoconfig. But with a version number
|
||||
tacked on, that name would be too long for System V R3 file systems, so
|
||||
I shortened it to Autoconf.
|
||||
|
||||
I called together a group of priests of portability (er, alpha testers)
|
||||
to give me feedback as I encapsulated pieces of my handwritten scripts
|
||||
in @code{m4} macros and continued to add features and improve the
|
||||
techniques used in the checks. Prominent among the testers were
|
||||
@ifinfo
|
||||
Franc,ois
|
||||
@end ifinfo
|
||||
@tex
|
||||
Fran\c cois
|
||||
@end tex
|
||||
Pinard, who came up with the idea of making an @file{autoconf} shell
|
||||
script to run @code{m4} and check for unresolved macro calls; Karl
|
||||
Berry, who championed standardizing the @code{HAVE_@var{feature}} form
|
||||
for C preprocessor symbols; and Ian Taylor, who added support for
|
||||
creating a C header file as an alternative to putting @samp{-D} options
|
||||
in a @file{Makefile}, so he could use it in his UUCP package. The alpha
|
||||
testers cheerfully adjusted their files again and again as the names and
|
||||
calling conventions of the Autoconf macros changed from release to
|
||||
release. They all contributed many specific checks, great ideas, and
|
||||
bug fixes.
|
||||
|
||||
@node Numbers, Deuteronomy, Leviticus, History
|
||||
@section Numbers
|
||||
|
||||
In July 1992, after months of alpha testing, I released Autoconf 1.0,
|
||||
and converted many of GNU packages to use it. I was surprised by how
|
||||
positive the reaction to it was. More people started using it than I
|
||||
could keep track of, including people working on software that wasn't
|
||||
part of the GNU Project (such as TCL, FSP, @TeX{}, and Kerberos v5).
|
||||
Autoconf continued to improve rapidly, as many people using the
|
||||
@code{configure} scripts reported problems they encountered.
|
||||
|
||||
Autoconf turned out to be a good torture test for @code{m4}
|
||||
implementations. Unix @code{m4} started to dump core because of the
|
||||
length of the macros that Autoconf defined, and several bugs showed up
|
||||
in GNU @code{m4} as well. Eventually, we realized that we needed to use
|
||||
some features that only GNU @code{m4} has. BSD @code{m4}, in
|
||||
particular, has an impoverished set of builtin macros; the System V
|
||||
version is better, but still doesn't have everything we need.
|
||||
|
||||
More development occurred as people put Autoconf under more stresses
|
||||
(and to uses I'd never imagined). Karl Berry added checks for X11.
|
||||
david zuhn contributed C++ support.
|
||||
@ifinfo
|
||||
Franc,ois
|
||||
@end ifinfo
|
||||
@tex
|
||||
Fran\c cois
|
||||
@end tex
|
||||
Pinard made it diagnose invalid arguments. Jim Blandy bravely coerced
|
||||
it into configuring GNU Emacs, laying the groundwork for several later
|
||||
improvements. Roland McGrath got it to configure the GNU C Library,
|
||||
wrote the @code{autoheader} script to automate the creation of C header
|
||||
file templates, and added a @samp{--verbose} option to @code{configure}.
|
||||
Noah Friedman added the @samp{--macrodir} option and @code{AC_MACRODIR}
|
||||
environment variable. Roland and Noah improved the quoting protection
|
||||
in @code{AC_DEFINE} and fixed many bugs, especially when I got sick of
|
||||
dealing with portability problems from February through June, 1993.
|
||||
|
||||
@node Deuteronomy, , Numbers, History
|
||||
@section Deuteronomy
|
||||
|
||||
A long wish list for major features had accumulated, and the effect of
|
||||
several years of patching by various people had left some residual
|
||||
cruft. In April 1994, while working for Cygnus Support, I began a major
|
||||
revision of Autoconf. I added most of the features of the Cygnus
|
||||
@code{configure} that Autoconf had lacked; for example, support for
|
||||
using @file{config.sub} and options like @samp{--host}, derived from
|
||||
work that david zuhn and Ken Raeburn contributed while converting GNU
|
||||
@code{as} to use Autoconf. Rob Savoye required the ability to run
|
||||
@code{configure} scripts in subdirectories when he made DejaGNU use
|
||||
Autoconf.
|
||||
|
||||
I added more features in response to other peoples' requests. Many
|
||||
people had asked for @code{configure} scripts to share the results of
|
||||
the checks between runs, because (particularly when configuring a large
|
||||
source tree, like Cygnus does) they were frustratingly slow. Mike
|
||||
Haertel suggested adding site-specific initialization scripts. People
|
||||
distributing software that had to unpack on MS-DOS asked for a way to
|
||||
override the @file{.in} extension on the file names. Jim Avera did an
|
||||
extensive examination of the problems with quoting in @code{AC_DEFINE}
|
||||
and contributed significant improvements to it. Richard Stallman asked
|
||||
that compiler output be sent to @file{config.log} instead of
|
||||
@file{/dev/null}, to help people debug the Emacs @code{configure}
|
||||
script.
|
||||
|
||||
I made some other changes because of my dissatisfaction with the quality
|
||||
of the program. I made the messages showing results of the checks less
|
||||
ambiguous, always printing a result. I regularized the names of the
|
||||
macros and cleaned up coding style inconsistencies. I added several
|
||||
useful auxiliary utilities that I had developed to help convert source
|
||||
code packages to use Autoconf. And I began a testsuite, because
|
||||
experience had shown that Autoconf had a pronounced tendency to regress
|
||||
when we changed it.
|
||||
|
||||
Again, several alpha testers gave invaluable feedback, especially
|
||||
@ifinfo
|
||||
Franc,ois
|
||||
@end ifinfo
|
||||
@tex
|
||||
Fran\c cois
|
||||
@end tex
|
||||
Pinard, Rob Savoye, and Ken Raeburn.
|
||||
|
||||
Finally, version 2.0 was ready.
|
||||
|
||||
@node Preprocessor Symbol Index, Macro Index, History, Top
|
||||
@unnumbered Preprocessor Symbol Index
|
||||
|
||||
This is an alphabetical list of the C preprocessor symbols that the
|
||||
|
||||
@ -105,6 +105,7 @@ package. This is edition @value{EDITION}, for Autoconf version @value{VERSION}.
|
||||
* Site Default Values:: Providing local defaults for @code{configure}.
|
||||
* Old Macro Names:: Backward compatibility macros.
|
||||
* Example:: Sample Autoconf input files.
|
||||
* History:: History of Autoconf.
|
||||
* Preprocessor Symbol Index:: Index of C preprocessor symbols defined.
|
||||
* Macro Index:: Index of Autoconf macros.
|
||||
|
||||
@ -189,6 +190,14 @@ An Example
|
||||
|
||||
* Sample configure.in:: An example of a @file{configure} template.
|
||||
* Sample Makefile.in:: An example of a @file{Makefile} template.
|
||||
|
||||
History of Autoconf
|
||||
|
||||
* Genesis:: Prehistory and naming of @code{configure}.
|
||||
* Exodus:: The plagues of @code{m4} and Perl.
|
||||
* Leviticus:: The priestly code of portability arrives.
|
||||
* Numbers:: Listing of growth and contributors.
|
||||
* Deuteronomy:: Approaching the promises of easy configuration.
|
||||
@end menu
|
||||
|
||||
@node Introduction, Distributing, Top, Top
|
||||
@ -1239,12 +1248,12 @@ library, in case only some of them use the code in @code{LIBOBJS}.
|
||||
|
||||
If this macro finds @file{alloca.h}, it defines @code{HAVE_ALLOCA_H}.
|
||||
|
||||
This macro does not try to get @code{alloca} from the SVR3 @file{libPW}
|
||||
or the SVR4 @file{libucb} because those libraries contain some
|
||||
incompatible functions that cause trouble. Some versions do not even
|
||||
contain @code{alloca} or contain a buggy version. If you still want to
|
||||
use their @code{alloca}, use @code{ar} to extract @file{alloca.o} from
|
||||
them instead of compiling @file{alloca.c}.
|
||||
This macro does not try to get @code{alloca} from the System V R3
|
||||
@file{libPW} or the System V R4 @file{libucb} because those libraries
|
||||
contain some incompatible functions that cause trouble. Some versions
|
||||
do not even contain @code{alloca} or contain a buggy version. If you
|
||||
still want to use their @code{alloca}, use @code{ar} to extract
|
||||
@file{alloca.o} from them instead of compiling @file{alloca.c}.
|
||||
|
||||
Source files that use @code{alloca} should start with a piece of code
|
||||
like the following, to declare it properly. Note that in some versions
|
||||
@ -2958,19 +2967,21 @@ error (in case the file doesn't exist) of @code{grep} to
|
||||
whether it found a match.
|
||||
|
||||
To check whether the Autoconf macros have already defined a certain C
|
||||
preprocessor symbol, you can use a @code{case} statement like this:
|
||||
preprocessor symbol, test the value of the appropriate cache variable,
|
||||
as in this example:
|
||||
|
||||
@example
|
||||
case "$DEFS" in
|
||||
*HAVE_FOO*) ;;
|
||||
*) LIBOBJS="$LIBOBJS foo.o" ;;
|
||||
esac
|
||||
AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF))
|
||||
if test "$ac_cv_func_vprintf" != yes; then
|
||||
AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT))
|
||||
fi
|
||||
@end example
|
||||
|
||||
@noindent
|
||||
Make sure to enclose the variable name you are checking (usually
|
||||
@code{DEFS}) in double quotes, because otherwise some old versions of
|
||||
@code{bash} misinterpret the statement.
|
||||
Unlike in Autoconf version 1, there is no shell variable @code{DEFS} set
|
||||
while @code{configure} is running. This difference is because properly
|
||||
quoting the contents of that variable turned out to be too cumbersome to
|
||||
do every time @code{AC_DEFINE} is called.
|
||||
|
||||
@node Test Programs, Multiple Cases, Checking for Symbols, Writing Macros
|
||||
@section Test Programs
|
||||
@ -3805,7 +3816,7 @@ removed
|
||||
@code{AC_OS_DYNIX}
|
||||
@end table
|
||||
|
||||
@node Example, Preprocessor Symbol Index, Old Macro Names, Top
|
||||
@node Example, History, Old Macro Names, Top
|
||||
@chapter An Example
|
||||
|
||||
Here are sample @file{configure.in} and @file{Makefile.in} files, to
|
||||
@ -3889,8 +3900,8 @@ RTAPELIB = @@RTAPELIB@@
|
||||
CFLAGS = -g
|
||||
LDFLAGS = -g
|
||||
|
||||
prefix = /usr/local
|
||||
exec_prefix = $(prefix)
|
||||
prefix = @@prefix@@
|
||||
exec_prefix = @@exec_prefix@@
|
||||
binprefix =
|
||||
manprefix =
|
||||
|
||||
@ -3986,7 +3997,193 @@ dist: $(DISTFILES)
|
||||
rm -rf `cat .fname` .fname
|
||||
@end example
|
||||
|
||||
@node Preprocessor Symbol Index, Macro Index, Example, Top
|
||||
@node History, Preprocessor Symbol Index, Example, Top
|
||||
@chapter History of Autoconf
|
||||
|
||||
You may be wondering, Why was Autoconf originally written? How did it
|
||||
get into its present form? (Why does it look like gorilla spit?) If
|
||||
you're not wondering, then this chapter contains no information useful
|
||||
to you, and you might as well skip it. If you @emph{are} wondering,
|
||||
then let there be light.
|
||||
|
||||
@menu
|
||||
* Genesis:: Prehistory and naming of @code{configure}.
|
||||
* Exodus:: The plagues of @code{m4} and Perl.
|
||||
* Leviticus:: The priestly code of portability arrives.
|
||||
* Numbers:: Listing of growth and contributors.
|
||||
* Deuteronomy:: Approaching the promises of easy configuration.
|
||||
@end menu
|
||||
|
||||
@node Genesis, Exodus, , History
|
||||
@section Genesis
|
||||
|
||||
In June 1991 I was maintaining many of the GNU utilities for the Free
|
||||
Software Foundation. As they were ported to more platforms and more
|
||||
programs were added, the number of @samp{-D} options that users had to
|
||||
select in the @file{Makefile} (around 20) became burdensome. Especially
|
||||
for me---I had to test each new release on a bunch of different systems.
|
||||
So I wrote a little shell script to guess some of the correct settings
|
||||
for the fileutils package, and released it as part of fileutils 2.0.
|
||||
That @code{configure} script worked well enough that the next month I
|
||||
adapted it (by hand) to create similar @code{configure} scripts for
|
||||
several other GNU utilities packages. Brian Berliner also adapted one
|
||||
of my scripts for his CVS revision control system.
|
||||
|
||||
Later that summer, I learned that Richard Stallman and Richard Pixley
|
||||
were developing similar scripts to use in the GNU compiler tools; so I
|
||||
adapted my @code{configure} scripts to support their evolving interface:
|
||||
using the file name @file{Makefile.in} as the templates; adding
|
||||
@samp{+srcdir}, the first option (of many); and creating
|
||||
@file{config.status} files.
|
||||
|
||||
@node Exodus, Leviticus, Genesis, History
|
||||
@section Exodus
|
||||
|
||||
As I got feedback from users, I incorporated many improvements, using
|
||||
Emacs to search and replace, cut and paste, similar changes in each of
|
||||
the scripts. As I adapted more GNU utilities packages to use
|
||||
@code{configure} scripts, updating them all by hand became burdensome.
|
||||
Rich Murphey, the maintainer of the GNU graphics utilities, sent me mail
|
||||
saying that the @code{configure} scripts were great, and asking if I had
|
||||
a program for generating them that I could send him. No, I thought, but
|
||||
I should! So I started to work out how to generate them. And the
|
||||
journey from the bondage of hand-written @file{configure} scripts to the
|
||||
promise of Autoconf began.
|
||||
|
||||
I looked briefly into using Larry Wall's Metaconfig program, but I
|
||||
decided not to for several reasons. The @code{Configure} scripts it
|
||||
produces are interactive, which I find quite inconvenient; I didn't like
|
||||
the ways it checked for some features (such as library functions); it
|
||||
was not being maintained, and its scripts didn't work on many modern
|
||||
systems (such as System V R4 and NeXT); it wasn't very flexible in what
|
||||
it could do in response to a feature's presence or absence; I found it
|
||||
confusing to learn; and it was too big and complex for my needs (I
|
||||
didn't realize then how much Autoconf would eventually have to grow). I
|
||||
considered using Perl to generate my style of @code{configure} scripts,
|
||||
but decided that @code{m4} was better suited to the job of simple
|
||||
textual substitutions: it gets in the way less, because output is
|
||||
implicit. Plus, everyone already has it. (Initially I didn't rely on
|
||||
the GNU extensions to @code{m4}.) Also, some of my friends at the
|
||||
University of Maryland had recently been putting @code{m4} front ends on
|
||||
several programs, including @code{tvtwm}, and I was interested in trying
|
||||
out a new language.
|
||||
|
||||
@node Leviticus, Numbers, Exodus, History
|
||||
@section Leviticus
|
||||
|
||||
Since my @code{configure} scripts determine the system's capabilities
|
||||
automatically, with no interactive user intervention, I decided to call
|
||||
the program that generates them Autoconfig. But with a version number
|
||||
tacked on, that name would be too long for System V R3 file systems, so
|
||||
I shortened it to Autoconf.
|
||||
|
||||
I called together a group of priests of portability (er, alpha testers)
|
||||
to give me feedback as I encapsulated pieces of my handwritten scripts
|
||||
in @code{m4} macros and continued to add features and improve the
|
||||
techniques used in the checks. Prominent among the testers were
|
||||
@ifinfo
|
||||
Franc,ois
|
||||
@end ifinfo
|
||||
@tex
|
||||
Fran\c cois
|
||||
@end tex
|
||||
Pinard, who came up with the idea of making an @file{autoconf} shell
|
||||
script to run @code{m4} and check for unresolved macro calls; Karl
|
||||
Berry, who championed standardizing the @code{HAVE_@var{feature}} form
|
||||
for C preprocessor symbols; and Ian Taylor, who added support for
|
||||
creating a C header file as an alternative to putting @samp{-D} options
|
||||
in a @file{Makefile}, so he could use it in his UUCP package. The alpha
|
||||
testers cheerfully adjusted their files again and again as the names and
|
||||
calling conventions of the Autoconf macros changed from release to
|
||||
release. They all contributed many specific checks, great ideas, and
|
||||
bug fixes.
|
||||
|
||||
@node Numbers, Deuteronomy, Leviticus, History
|
||||
@section Numbers
|
||||
|
||||
In July 1992, after months of alpha testing, I released Autoconf 1.0,
|
||||
and converted many of GNU packages to use it. I was surprised by how
|
||||
positive the reaction to it was. More people started using it than I
|
||||
could keep track of, including people working on software that wasn't
|
||||
part of the GNU Project (such as TCL, FSP, @TeX{}, and Kerberos v5).
|
||||
Autoconf continued to improve rapidly, as many people using the
|
||||
@code{configure} scripts reported problems they encountered.
|
||||
|
||||
Autoconf turned out to be a good torture test for @code{m4}
|
||||
implementations. Unix @code{m4} started to dump core because of the
|
||||
length of the macros that Autoconf defined, and several bugs showed up
|
||||
in GNU @code{m4} as well. Eventually, we realized that we needed to use
|
||||
some features that only GNU @code{m4} has. BSD @code{m4}, in
|
||||
particular, has an impoverished set of builtin macros; the System V
|
||||
version is better, but still doesn't have everything we need.
|
||||
|
||||
More development occurred as people put Autoconf under more stresses
|
||||
(and to uses I'd never imagined). Karl Berry added checks for X11.
|
||||
david zuhn contributed C++ support.
|
||||
@ifinfo
|
||||
Franc,ois
|
||||
@end ifinfo
|
||||
@tex
|
||||
Fran\c cois
|
||||
@end tex
|
||||
Pinard made it diagnose invalid arguments. Jim Blandy bravely coerced
|
||||
it into configuring GNU Emacs, laying the groundwork for several later
|
||||
improvements. Roland McGrath got it to configure the GNU C Library,
|
||||
wrote the @code{autoheader} script to automate the creation of C header
|
||||
file templates, and added a @samp{--verbose} option to @code{configure}.
|
||||
Noah Friedman added the @samp{--macrodir} option and @code{AC_MACRODIR}
|
||||
environment variable. Roland and Noah improved the quoting protection
|
||||
in @code{AC_DEFINE} and fixed many bugs, especially when I got sick of
|
||||
dealing with portability problems from February through June, 1993.
|
||||
|
||||
@node Deuteronomy, , Numbers, History
|
||||
@section Deuteronomy
|
||||
|
||||
A long wish list for major features had accumulated, and the effect of
|
||||
several years of patching by various people had left some residual
|
||||
cruft. In April 1994, while working for Cygnus Support, I began a major
|
||||
revision of Autoconf. I added most of the features of the Cygnus
|
||||
@code{configure} that Autoconf had lacked; for example, support for
|
||||
using @file{config.sub} and options like @samp{--host}, derived from
|
||||
work that david zuhn and Ken Raeburn contributed while converting GNU
|
||||
@code{as} to use Autoconf. Rob Savoye required the ability to run
|
||||
@code{configure} scripts in subdirectories when he made DejaGNU use
|
||||
Autoconf.
|
||||
|
||||
I added more features in response to other peoples' requests. Many
|
||||
people had asked for @code{configure} scripts to share the results of
|
||||
the checks between runs, because (particularly when configuring a large
|
||||
source tree, like Cygnus does) they were frustratingly slow. Mike
|
||||
Haertel suggested adding site-specific initialization scripts. People
|
||||
distributing software that had to unpack on MS-DOS asked for a way to
|
||||
override the @file{.in} extension on the file names. Jim Avera did an
|
||||
extensive examination of the problems with quoting in @code{AC_DEFINE}
|
||||
and contributed significant improvements to it. Richard Stallman asked
|
||||
that compiler output be sent to @file{config.log} instead of
|
||||
@file{/dev/null}, to help people debug the Emacs @code{configure}
|
||||
script.
|
||||
|
||||
I made some other changes because of my dissatisfaction with the quality
|
||||
of the program. I made the messages showing results of the checks less
|
||||
ambiguous, always printing a result. I regularized the names of the
|
||||
macros and cleaned up coding style inconsistencies. I added several
|
||||
useful auxiliary utilities that I had developed to help convert source
|
||||
code packages to use Autoconf. And I began a testsuite, because
|
||||
experience had shown that Autoconf had a pronounced tendency to regress
|
||||
when we changed it.
|
||||
|
||||
Again, several alpha testers gave invaluable feedback, especially
|
||||
@ifinfo
|
||||
Franc,ois
|
||||
@end ifinfo
|
||||
@tex
|
||||
Fran\c cois
|
||||
@end tex
|
||||
Pinard, Rob Savoye, and Ken Raeburn.
|
||||
|
||||
Finally, version 2.0 was ready.
|
||||
|
||||
@node Preprocessor Symbol Index, Macro Index, History, Top
|
||||
@unnumbered Preprocessor Symbol Index
|
||||
|
||||
This is an alphabetical list of the C preprocessor symbols that the
|
||||
|
||||
@ -1444,45 +1444,48 @@ fi
|
||||
dnl
|
||||
AC_DEFUN(AC_PATH_X,
|
||||
[AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally.
|
||||
# If we find X, set shell vars x_includes and x_libraries to the paths.
|
||||
no_x=yes
|
||||
if test "x$with_x" != xno; then
|
||||
# If we find X, set shell vars x_includes and x_libraries to the
|
||||
# paths, otherwise set no_x=yes.
|
||||
# Uses ac_ vars as temps to allow command line to override cache and checks.
|
||||
# --without-x overrides everything else, but does not touch the cache.
|
||||
AC_MSG_CHECKING(for X)
|
||||
|
||||
# Command line options override cache.
|
||||
# FIXME We need to allow --x=includes= to work, I think.
|
||||
test -n "$x_includes" && ac_cv_x_includes="$x_includes"
|
||||
test -n "$x_libraries" && ac_cv_x_includes="$x_libraries"
|
||||
if test "${ac_cv_x_includes+set}" = set &&
|
||||
test "${ac_cv_x_libraries+set}" = set; then
|
||||
AC_VERBOSE(using cached values for ac_cv_x_includes and ac_cv_x_libraries)
|
||||
if test "x$with_x" = xno; then
|
||||
no_x=yes
|
||||
else
|
||||
if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
|
||||
no_x=
|
||||
else
|
||||
AC_CACHE_VAL(ac_cv_path_x,
|
||||
[# One or both of the vars are not set, and there is no cached value.
|
||||
no_x=yes
|
||||
AC_PATH_X_XMKMF
|
||||
fi
|
||||
if test "${ac_cv_x_includes+set}" != set ||
|
||||
test "${ac_cv_x_libraries+set}" != set; then
|
||||
if test "$no_x" = yes; then
|
||||
AC_PATH_X_DIRECT
|
||||
fi
|
||||
test -z "$ac_cv_x_includes" && ac_cv_x_includes=NONE
|
||||
test -z "$ac_cv_x_libraries" && ac_cv_x_libraries=NONE
|
||||
if test "$no_x" = yes; then
|
||||
ac_cv_path_x="no_x=yes"
|
||||
else
|
||||
ac_cv_path_x="no_x= ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
|
||||
fi])dnl
|
||||
fi
|
||||
eval "$ac_cv_path_x"
|
||||
fi # $with_x != no
|
||||
|
||||
# FIXME can we reliably distinguish cache values that are set to empty
|
||||
# from those that aren't set?
|
||||
if test -z "$x_includes" && test "$ac_cv_x_includes" != NONE; then
|
||||
x_includes="$ac_cv_x_includes"
|
||||
if test "$no_x" = yes; then
|
||||
AC_MSG_RESULT(no)
|
||||
else
|
||||
test "x$x_includes" = xNONE && x_includes=$ac_x_includes
|
||||
test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
|
||||
ac_cv_path_x="no_x= ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
|
||||
AC_MSG_RESULT([libraries $x_libraries, headers $x_includes])
|
||||
fi
|
||||
if test -z "$x_libraries" && test "$ac_cv_x_libraries" != NONE; then
|
||||
x_libraries="$ac_cv_x_libraries"
|
||||
fi
|
||||
|
||||
test -n "$x_includes" && AC_VERBOSE(X11 headers are in $x_includes)
|
||||
test -n "$x_libraries" && AC_VERBOSE(X11 libraries are in $x_libraries)
|
||||
fi # No --with-x=no.
|
||||
])dnl
|
||||
dnl
|
||||
dnl Internal subroutine of AC_PATH_X.
|
||||
dnl Set ac_x_includes, ac_x_libraries, and no_x (initially yes).
|
||||
AC_DEFUN(AC_PATH_X_XMKMF,
|
||||
[AC_CHECKING(for X include and library files with xmkmf)
|
||||
rm -fr conftestdir
|
||||
[rm -fr conftestdir
|
||||
if mkdir conftestdir; then
|
||||
cd conftestdir
|
||||
# Make sure to not put "make" in the Imakefile rules, since we grep it out.
|
||||
@ -1501,11 +1504,11 @@ EOF
|
||||
fi
|
||||
case "$ac_im_incroot" in
|
||||
/usr/include) ;;
|
||||
*) test -z "$ac_cv_x_includes" && ac_cv_x_includes="$ac_im_incroot" ;;
|
||||
*) ac_x_includes="$ac_im_incroot" ;;
|
||||
esac
|
||||
case "$ac_im_usrlibdir" in
|
||||
/usr/lib | /lib) ;;
|
||||
*) test -z "$ac_cv_x_libraries" && ac_cv_x_libraries="$ac_im_usrlibdir" ;;
|
||||
*) ac_x_libraries="$ac_im_usrlibdir" ;;
|
||||
esac
|
||||
fi
|
||||
cd ..
|
||||
@ -1514,12 +1517,12 @@ fi
|
||||
])dnl
|
||||
dnl
|
||||
dnl Internal subroutine of AC_PATH_X.
|
||||
dnl Set ac_x_includes, ac_x_libraries, and no_x (initially yes).
|
||||
AC_DEFUN(AC_PATH_X_DIRECT,
|
||||
[AC_CHECKING(for X include and library files directly)
|
||||
test -z "$x_direct_test_library" && x_direct_test_library=Xt
|
||||
[test -z "$x_direct_test_library" && x_direct_test_library=Xt
|
||||
test -z "$x_direct_test_include" && x_direct_test_include=X11/Intrinsic.h
|
||||
AC_TRY_CPP([#include <$x_direct_test_include>], no_x=,
|
||||
for ac_dir in \
|
||||
AC_TRY_CPP([#include <$x_direct_test_include>], [no_x= ac_x_includes=],
|
||||
[ for ac_dir in \
|
||||
/usr/X11R6/include \
|
||||
/usr/X11R5/include \
|
||||
/usr/X11R4/include \
|
||||
@ -1557,16 +1560,15 @@ AC_TRY_CPP([#include <$x_direct_test_include>], no_x=,
|
||||
; \
|
||||
do
|
||||
if test -r "$ac_dir/$x_direct_test_include"; then
|
||||
test -z "$ac_cv_x_includes" && ac_cv_x_includes=$ac_dir
|
||||
no_x=
|
||||
no_x= ac_x_includes=$ac_dir
|
||||
break
|
||||
fi
|
||||
done)
|
||||
done])
|
||||
|
||||
# Check for the libraries. First see if replacing the include by
|
||||
# lib works.
|
||||
AC_HAVE_LIBRARY("$x_direct_test_library", no_x=,
|
||||
for ac_dir in `echo "$ac_cv_x_includes" | sed s/include/lib/` \
|
||||
AC_CHECK_LIB("$x_direct_test_library", main, [no_x= ac_x_libraries=],
|
||||
[for ac_dir in `echo "$ac_x_includes" | sed s/include/lib/` \
|
||||
/usr/X11R6/lib \
|
||||
/usr/X11R5/lib \
|
||||
/usr/X11R4/lib \
|
||||
@ -1605,61 +1607,58 @@ for ac_dir in `echo "$ac_cv_x_includes" | sed s/include/lib/` \
|
||||
do
|
||||
for ac_extension in a so sl; do
|
||||
if test -r $ac_dir/lib${x_direct_test_library}.$ac_extension; then
|
||||
test -z "$ac_cv_x_libraries" && ac_cv_x_libraries=$ac_dir
|
||||
no_x=
|
||||
no_x= ac_x_libraries=$ac_dir
|
||||
break 2
|
||||
fi
|
||||
done
|
||||
done)])dnl
|
||||
done])])dnl
|
||||
dnl
|
||||
dnl Find additional X libraries, magic flags, etc.
|
||||
AC_DEFUN(AC_PATH_XTRA,
|
||||
[AC_REQUIRE([AC_OS_ISC])dnl
|
||||
AC_REQUIRE([AC_PATH_X])dnl
|
||||
AC_CHECKING(for additional X libraries and flags)
|
||||
if test -n "$x_includes"; then
|
||||
X_CFLAGS="$X_CFLAGS -I$x_includes"
|
||||
elif test "$no_x" = yes; then
|
||||
if test "$no_x" = yes; then
|
||||
# Not all programs may use this symbol, but it does not hurt to define it.
|
||||
X_CFLAGS="$X_CFLAGS -DX_DISPLAY_MISSING"
|
||||
fi
|
||||
|
||||
# It would be nice to have a more robust check for the -R ld option than
|
||||
# just checking for Solaris.
|
||||
# It would also be nice to do this for all -L options, not just this one.
|
||||
if test -n "$x_libraries"; then
|
||||
X_LIBS="$X_LIBS -L$x_libraries"
|
||||
if test "`(uname) 2>/dev/null`" = SunOS &&
|
||||
uname -r | grep '^5' >/dev/null; then
|
||||
X_LIBS="$X_LIBS -R$x_libraries"
|
||||
fi
|
||||
fi
|
||||
|
||||
# Check for additional X libraries.
|
||||
|
||||
if test "$ISC" = yes; then
|
||||
X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
|
||||
else
|
||||
# Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
|
||||
# libraries were built with DECnet support. And karl@cs.umb.edu says
|
||||
# the Alpha needs dnet_stub (dnet does not exist).
|
||||
AC_CHECK_LIB(dnet, dnet_ntoa,
|
||||
[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet" ac_have_dnet=yes], ac_have_dnet=no)
|
||||
if test "$ac_have_dnet" = no; then
|
||||
AC_CHECK_LIB(dnet_stub, dnet_ntoa,
|
||||
[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
|
||||
if test -n "$x_includes"; then
|
||||
X_CFLAGS="$X_CFLAGS -I$x_includes"
|
||||
fi
|
||||
# lieder@skyler.mavd.honeywell.com says without -lsocket,
|
||||
# socket/setsockopt and other routines are undefined under SCO ODT 2.0.
|
||||
# But -lsocket is broken on IRIX, according to simon@lia.di.epfl.ch.
|
||||
if test "`(uname) 2>/dev/null`" != IRIX; then
|
||||
AC_CHECK_LIB(socket, socket, [X_EXTRA_LIBS="$X_EXTRA_LIBS -lsocket"])
|
||||
|
||||
# It would be nice to have a more robust check for the -R ld option than
|
||||
# just checking for Solaris.
|
||||
# It would also be nice to do this for all -L options, not just this one.
|
||||
if test -n "$x_libraries"; then
|
||||
X_LIBS="$X_LIBS -L$x_libraries"
|
||||
if test "`(uname) 2>/dev/null`" = SunOS &&
|
||||
uname -r | grep '^5' >/dev/null; then
|
||||
X_LIBS="$X_LIBS -R$x_libraries"
|
||||
fi
|
||||
fi
|
||||
|
||||
# Check for additional X libraries.
|
||||
|
||||
if test "$ISC" = yes; then
|
||||
X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
|
||||
else
|
||||
# Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
|
||||
# libraries were built with DECnet support. And karl@cs.umb.edu says
|
||||
# the Alpha needs dnet_stub (dnet does not exist).
|
||||
AC_CHECK_LIB(dnet, dnet_ntoa,
|
||||
[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet" ac_have_dnet=yes], ac_have_dnet=no)
|
||||
if test "$ac_have_dnet" = no; then
|
||||
AC_CHECK_LIB(dnet_stub, dnet_ntoa,
|
||||
[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
|
||||
fi
|
||||
# lieder@skyler.mavd.honeywell.com says without -lsocket,
|
||||
# socket/setsockopt and other routines are undefined under SCO ODT 2.0.
|
||||
# But -lsocket is broken on IRIX, according to simon@lia.di.epfl.ch.
|
||||
if test "`(uname) 2>/dev/null`" != IRIX; then
|
||||
AC_CHECK_LIB(socket, socket, [X_EXTRA_LIBS="$X_EXTRA_LIBS -lsocket"])
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
#
|
||||
AC_VERBOSE(X compiler flags: $X_CFLAGS)
|
||||
AC_VERBOSE(X library flags: $X_LIBS)
|
||||
AC_VERBOSE(extra X libraries: $X_EXTRA_LIBS)
|
||||
AC_SUBST(X_CFLAGS)dnl
|
||||
AC_SUBST(X_LIBS)dnl
|
||||
AC_SUBST(X_EXTRA_LIBS)dnl
|
||||
|
||||
Loading…
Reference in New Issue
Block a user