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* lib/autoconf/functions.m4 (AC_FUNC_FSEEKO): Don't compile the
fseeko testing program twice; just use the earlier result. * lib/autoconf/specific.m4 (_AC_SYS_LARGEFILE_MACRO_VALUE): Set cache var to 'unknown' (not 'no') if leaving the macro unset still doesn't let the program compile. (AC_SYS_LARGEFILE): Test for _LARGE_FILES only if earlier tests failed. * lib/autoconf/functions.m4: Fix problems reported by Ralf Wildenhues. (AC_FUNC_ERROR_AT_LINE): Don't bother to check for error.h. Just include it, without including anything else. (AC_FUNC_FSEEKO): Avoid gcc -Wall warnings about constant expressions. (AC_FUNC_STRNLEN): Require AC_USE_SYSTEM_EXTENSIONS. * lib/autoconf/functions.m4 (AC_FUNC_ERROR_AT_LINE): Check for `error.h', and include it, for a `error_at_line' prototype. Use a nonempty format string in the link test. * lib/autoconf/functions.m4 (AC_FUNC_WAIT3): Include <sys/wait.h>, for a declaration of wait3.
This commit is contained in:
Paul Eggert
parent
17726a28cc
commit
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ChangeLog
40
ChangeLog
@ -1,3 +1,43 @@
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2006-09-26 Paul Eggert <eggert@cs.ucla.edu>
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* lib/autoconf/functions.m4 (AC_FUNC_FSEEKO): Don't compile the
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fseeko testing program twice; just use the earlier result.
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* lib/autoconf/specific.m4 (_AC_SYS_LARGEFILE_MACRO_VALUE):
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Set cache var to 'unknown' (not 'no') if leaving the macro unset
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still doesn't let the program compile.
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(AC_SYS_LARGEFILE): Test for _LARGE_FILES only if earlier tests
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failed.
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* lib/autoconf/functions.m4: Fix problems reported by Ralf Wildenhues.
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(AC_FUNC_ERROR_AT_LINE): Don't bother to check for error.h. Just
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include it, without including anything else.
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(AC_FUNC_FSEEKO): Avoid gcc -Wall warnings about constant
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expressions.
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(AC_FUNC_STRNLEN): Require AC_USE_SYSTEM_EXTENSIONS.
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2006-09-26 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
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* lib/autoconf/functions.m4 (AC_FUNC_ERROR_AT_LINE): Check for
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`error.h', and include it, for a `error_at_line' prototype.
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Use a nonempty format string in the link test.
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* lib/autoconf/functions.m4 (AC_FUNC_WAIT3): Include <sys/wait.h>,
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for a declaration of wait3.
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2006-09-26 Paul Eggert <eggert@cs.ucla.edu>
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* NEWS: AC_CHECK_DECL now also works with aggregate objects.
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* doc/autoconf.texi (Generic Declarations): Clarify that AC_CHECK_DECL
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can apply to constants too, and that it checks for macro defns.
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* lib/autoconf/general.m4 (AC_CHECK_DECL): Assume C89 or better,
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and simply cast the identifier to void. This handles structure
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values. Problem reported by Ralf Wildenhues.
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* tests/semantics.at (AC_CHECK_DECLS): Also check enums.
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2006-09-26 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
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* tests/semantics.at (AC_CHECK_DECLS): Also check macros,
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structure, and function symbols.
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2006-09-26 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
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* tests/semantics.at (AC_CHECK_MEMBERS): Also test with a struct
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@ -472,8 +472,8 @@ AN_FUNCTION([error_at_line], [AC_FUNC_ERROR_AT_LINE])
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AC_DEFUN([AC_FUNC_ERROR_AT_LINE],
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[AC_LIBSOURCES([error.h, error.c])dnl
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AC_CACHE_CHECK([for error_at_line], ac_cv_lib_error_at_line,
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
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[error_at_line (0, 0, "", 0, "");])],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <error.h>],
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[error_at_line (0, 0, "", 0, "an error occurred");])],
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[ac_cv_lib_error_at_line=yes],
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[ac_cv_lib_error_at_line=no])])
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if test $ac_cv_lib_error_at_line = no; then
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@ -589,17 +589,13 @@ AC_DEFUN([AC_FUNC_FSEEKO],
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[_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1,
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[ac_cv_sys_largefile_source],
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[Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).],
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[@%:@include <stdio.h>], [return !fseeko;])
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[@%:@include <stdio.h>],
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[[return fseeko (stdin, 0, 0) && (fseeko) (stdin, 0, 0);]])
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# We used to try defining _XOPEN_SOURCE=500 too, to work around a bug
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# in glibc 2.1.3, but that breaks too many other things.
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# If you want fseeko and ftello with glibc, upgrade to a fixed glibc.
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AC_CACHE_CHECK([for fseeko], [ac_cv_func_fseeko],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include <stdio.h>],
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[[return fseeko && fseeko (stdin, 0, 0);]])],
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[ac_cv_func_fseeko=yes],
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[ac_cv_func_fseeko=no])])
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if test $ac_cv_func_fseeko = yes; then
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if test $ac_cv_sys_largefile_source != unknown; then
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AC_DEFINE(HAVE_FSEEKO, 1,
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[Define to 1 if fseeko (and presumably ftello) exists and is declared.])
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fi
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@ -1653,7 +1649,8 @@ LIBS="-lintl $LIBS"])])dnl
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# ---------------
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AN_FUNCTION([strnlen], [AC_FUNC_STRNLEN])
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AC_DEFUN([AC_FUNC_STRNLEN],
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[AC_CACHE_CHECK([for working strnlen], ac_cv_func_strnlen_working,
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[AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])dnl
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AC_CACHE_CHECK([for working strnlen], ac_cv_func_strnlen_working,
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[AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[
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#define S "foobar"
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#define S_LEN (sizeof S - 1)
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@ -1998,6 +1995,7 @@ AC_CACHE_CHECK([for wait3 that fills in rusage],
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[AC_INCLUDES_DEFAULT[
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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/* HP-UX has wait3 but does not fill in rusage at all. */
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int
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main ()
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@ -130,17 +130,18 @@ m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES],
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m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE],
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[AC_CACHE_CHECK([for $1 value needed for large files], [$3],
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[while :; do
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$3=no
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$5], [$6])],
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[break])
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[$3=no; break])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([@%:@define $1 $2
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$5], [$6])],
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[$3=$2; break])
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$3=unknown
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break
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done])
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if test "$$3" != no; then
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AC_DEFINE_UNQUOTED([$1], [$$3], [$4])
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fi
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case $$3 in #(
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no | unknown) ;;
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*) AC_DEFINE_UNQUOTED([$1], [$$3], [$4]);;
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esac
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rm -f conftest*[]dnl
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])# _AC_SYS_LARGEFILE_MACRO_VALUE
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@ -181,10 +182,12 @@ if test "$enable_largefile" != no; then
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ac_cv_sys_file_offset_bits,
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[Number of bits in a file offset, on hosts where this is settable.],
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[_AC_SYS_LARGEFILE_TEST_INCLUDES])
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_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
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ac_cv_sys_large_files,
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[Define for large files, on AIX-style hosts.],
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[_AC_SYS_LARGEFILE_TEST_INCLUDES])
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if test $ac_cv_sys_file_offset_bits = unknown; then
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_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
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ac_cv_sys_large_files,
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[Define for large files, on AIX-style hosts.],
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[_AC_SYS_LARGEFILE_TEST_INCLUDES])
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fi
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fi
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])# AC_SYS_LARGEFILE
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