1995-02-18 09:27:10 +08:00
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dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro
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dnl which appears in configure.in before the sysdep configure scripts are run.
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dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any
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dnl AC_REQUIREs or AC_BEFOREs duplicating their code.
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dnl
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1996-05-11 06:06:47 +08:00
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define(AC_FD_MSG,6)dnl Autoconf lossage.
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define(AC_FD_CC,5)dnl Autoconf lossage.
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1995-02-18 09:27:10 +08:00
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AC_DEFUN([GLIBC_PROVIDES], [dnl
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AC_PROVIDE([AC_PROG_INSTALL])dnl
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AC_PROVIDE([AC_PROG_RANLIB])dnl
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AC_PROVIDE([AC_PROG_CC])dnl
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AC_PROVIDE([AC_PROG_CPP])dnl
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# This file is generated from configure.in by Autoconf. DO NOT EDIT!
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])dnl
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dnl
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dnl Check for a symbol
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dnl
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AC_DEFUN(AC_CHECK_SYMBOL, [dnl
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AC_MSG_CHECKING(for $1)
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AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl
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1996-05-11 06:06:47 +08:00
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AC_TRY_LINK(,
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1995-02-18 09:27:10 +08:00
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changequote(,)dnl
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extern char *$1[]; puts(*$1);,
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changequote([,])dnl
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ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)])
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if test "$ac_cv_check_symbol_$1" = yes; then
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changequote(,)dnl
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ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'`
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changequote([,])dnl
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AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol})
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fi
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AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
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dnl
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1997-05-27 07:01:17 +08:00
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dnl These modifications are to allow for an empty cross compiler tree.
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dnl In the situation that cross-linking is impossible, the variable
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dnl `cross_linkable' will be substituted with "yes".
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AC_DEFUN(AC_PROG_CC_LOCAL,
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[AC_BEFORE([$0], [AC_PROG_CPP])dnl
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AC_CHECK_PROG(CC, gcc, gcc)
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if test -z "$CC"; then
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AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
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test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
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fi
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AC_PROG_CC_WORKS_LOCAL
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AC_PROG_CC_GNU
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dnl The following differs from the AC_PROG_CC macro in autoconf. Since
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dnl we require a recent version of gcc to be used we do not need to go
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dnl into lengths and test for bugs in old versions. It must be gcc 2.7
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dnl or above.
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if test $ac_cv_prog_gcc = yes; then
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GCC=yes
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dnl Check the version
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cat > conftest.c <<EOF
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
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yes;
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#endif
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EOF
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if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
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if test -z "$CFLAGS"; then
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CFLAGS="-g -O2"
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fi
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else
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AC_MSG_ERROR([We require GNU CC version 2.7 or newer])
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fi
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else
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AC_MSG_ERROR([GNU libc must be compiled using GNU CC])
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fi
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])
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AC_DEFUN(AC_PROG_CC_WORKS_LOCAL,
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[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])
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AC_LANG_SAVE
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AC_LANG_C
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AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
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AC_LANG_RESTORE
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AC_MSG_RESULT($ac_cv_prog_cc_works)
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if test $ac_cv_prog_cc_works = no; then
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cross_linkable=no
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ac_cv_prog_cc_cross=yes
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dnl AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
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else
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cross_linkable=yes
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fi
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AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
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AC_MSG_RESULT($ac_cv_prog_cc_cross)
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AC_SUBST(cross_linkable)
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cross_compiling=$ac_cv_prog_cc_cross
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])
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