diff --git a/ChangeLog b/ChangeLog index a94948b4..f5292b2b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,43 @@ +2006-09-26 Paul Eggert + + * 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. + +2006-09-26 Ralf Wildenhues + + * 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 , + for a declaration of wait3. + +2006-09-26 Paul Eggert + + * NEWS: AC_CHECK_DECL now also works with aggregate objects. + * doc/autoconf.texi (Generic Declarations): Clarify that AC_CHECK_DECL + can apply to constants too, and that it checks for macro defns. + * lib/autoconf/general.m4 (AC_CHECK_DECL): Assume C89 or better, + and simply cast the identifier to void. This handles structure + values. Problem reported by Ralf Wildenhues. + * tests/semantics.at (AC_CHECK_DECLS): Also check enums. + +2006-09-26 Ralf Wildenhues + + * tests/semantics.at (AC_CHECK_DECLS): Also check macros, + structure, and function symbols. + 2006-09-26 Ralf Wildenhues * tests/semantics.at (AC_CHECK_MEMBERS): Also test with a struct diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4 index 343e06f5..4d02641c 100644 --- a/lib/autoconf/functions.m4 +++ b/lib/autoconf/functions.m4 @@ -472,8 +472,8 @@ AN_FUNCTION([error_at_line], [AC_FUNC_ERROR_AT_LINE]) AC_DEFUN([AC_FUNC_ERROR_AT_LINE], [AC_LIBSOURCES([error.h, error.c])dnl AC_CACHE_CHECK([for error_at_line], ac_cv_lib_error_at_line, -[AC_LINK_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], - [error_at_line (0, 0, "", 0, "");])], +[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include ], + [error_at_line (0, 0, "", 0, "an error occurred");])], [ac_cv_lib_error_at_line=yes], [ac_cv_lib_error_at_line=no])]) if test $ac_cv_lib_error_at_line = no; then @@ -589,17 +589,13 @@ AC_DEFUN([AC_FUNC_FSEEKO], [_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1, [ac_cv_sys_largefile_source], [Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).], - [@%:@include ], [return !fseeko;]) + [@%:@include ], + [[return fseeko (stdin, 0, 0) && (fseeko) (stdin, 0, 0);]]) # We used to try defining _XOPEN_SOURCE=500 too, to work around a bug # in glibc 2.1.3, but that breaks too many other things. # If you want fseeko and ftello with glibc, upgrade to a fixed glibc. -AC_CACHE_CHECK([for fseeko], [ac_cv_func_fseeko], -[AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include ], - [[return fseeko && fseeko (stdin, 0, 0);]])], - [ac_cv_func_fseeko=yes], - [ac_cv_func_fseeko=no])]) -if test $ac_cv_func_fseeko = yes; then +if test $ac_cv_sys_largefile_source != unknown; then AC_DEFINE(HAVE_FSEEKO, 1, [Define to 1 if fseeko (and presumably ftello) exists and is declared.]) fi @@ -1653,7 +1649,8 @@ LIBS="-lintl $LIBS"])])dnl # --------------- AN_FUNCTION([strnlen], [AC_FUNC_STRNLEN]) AC_DEFUN([AC_FUNC_STRNLEN], -[AC_CACHE_CHECK([for working strnlen], ac_cv_func_strnlen_working, +[AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])dnl +AC_CACHE_CHECK([for working strnlen], ac_cv_func_strnlen_working, [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[ #define S "foobar" #define S_LEN (sizeof S - 1) @@ -1998,6 +1995,7 @@ AC_CACHE_CHECK([for wait3 that fills in rusage], [AC_INCLUDES_DEFAULT[ #include #include +#include /* HP-UX has wait3 but does not fill in rusage at all. */ int main () diff --git a/lib/autoconf/specific.m4 b/lib/autoconf/specific.m4 index 5b0dee2f..db60d1c4 100644 --- a/lib/autoconf/specific.m4 +++ b/lib/autoconf/specific.m4 @@ -130,17 +130,18 @@ m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES], m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE], [AC_CACHE_CHECK([for $1 value needed for large files], [$3], [while :; do - $3=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$5], [$6])], - [break]) + [$3=no; break]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([@%:@define $1 $2 $5], [$6])], [$3=$2; break]) + $3=unknown break done]) -if test "$$3" != no; then - AC_DEFINE_UNQUOTED([$1], [$$3], [$4]) -fi +case $$3 in #( + no | unknown) ;; + *) AC_DEFINE_UNQUOTED([$1], [$$3], [$4]);; +esac rm -f conftest*[]dnl ])# _AC_SYS_LARGEFILE_MACRO_VALUE @@ -181,10 +182,12 @@ if test "$enable_largefile" != no; then ac_cv_sys_file_offset_bits, [Number of bits in a file offset, on hosts where this is settable.], [_AC_SYS_LARGEFILE_TEST_INCLUDES]) - _AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, - ac_cv_sys_large_files, - [Define for large files, on AIX-style hosts.], - [_AC_SYS_LARGEFILE_TEST_INCLUDES]) + if test $ac_cv_sys_file_offset_bits = unknown; then + _AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, + ac_cv_sys_large_files, + [Define for large files, on AIX-style hosts.], + [_AC_SYS_LARGEFILE_TEST_INCLUDES]) + fi fi ])# AC_SYS_LARGEFILE