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Update the attributes.m4 macro file from xine

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This file was imported from the xine project. Update it to the current
revision, which resolves the "no AC_LANG_SOURCE call detected in body"
warnings with Autoconf 2.68 or later.

Cc: Diego Pettenò <flameeyes@gmail.com>
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
David Ward 2020-01-03 13:05:51 -05:00 • committed by Jaroslav Kysela
parent 59792f467b
commit 9e2bbccfcc
1 changed files with 20 additions and 13 deletions
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27
m4/attributes.m4
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@ -1,6 +1,6 @@
dnl Macros to check the presence of generic (non-typed) symbols. dnl Macros to check the presence of generic (non-typed) symbols.
dnl Copyright (c) 2006-2007 Diego Pettenò <flameeyes@gmail.com> dnl Copyright (c) 2006-2008 Diego Pettenò <flameeyes@gmail.com>
dnl Copyright (c) 2006-2007 xine project dnl Copyright (c) 2006-2008 xine project
dnl dnl
dnl This program is free software; you can redistribute it and/or modify dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by dnl it under the terms of the GNU General Public License as published by
@ -39,7 +39,7 @@ AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [
AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]), AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]),
[ac_save_CFLAGS="$CFLAGS" [ac_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1" CFLAGS="$CFLAGS $1"
AC_COMPILE_IFELSE([int a;], AC_COMPILE_IFELSE([AC_LANG_SOURCE([int a;])],
[eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"], [eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"],
[eval "AS_TR_SH([cc_cv_cflags_$1])='no'"]) [eval "AS_TR_SH([cc_cv_cflags_$1])='no'"])
CFLAGS="$ac_save_CFLAGS" CFLAGS="$ac_save_CFLAGS"
@ -71,7 +71,7 @@ AC_DEFUN([CC_CHECK_CFLAG_APPEND], [
) )
AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes], AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes],
[CFLAGS="$CFLAGS $1"; $2], [$3]) [CFLAGS="$CFLAGS $1"; DEBUG_CFLAGS="$DEBUG_CFLAGS $1"; $2], [$3])
]) ])
dnl CC_CHECK_CFLAGS_APPEND([FLAG1 FLAG2], [action-if-found], [action-if-not]) dnl CC_CHECK_CFLAGS_APPEND([FLAG1 FLAG2], [action-if-found], [action-if-not])
@ -89,7 +89,7 @@ AC_DEFUN([CC_CHECK_LDFLAGS], [
AS_TR_SH([cc_cv_ldflags_$1]), AS_TR_SH([cc_cv_ldflags_$1]),
[ac_save_LDFLAGS="$LDFLAGS" [ac_save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $1" LDFLAGS="$LDFLAGS $1"
AC_LINK_IFELSE([int main() { return 1; }], AC_LINK_IFELSE([AC_LANG_SOURCE([int main() { return 1; }])],
[eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"], [eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"],
[eval "AS_TR_SH([cc_cv_ldflags_$1])="]) [eval "AS_TR_SH([cc_cv_ldflags_$1])="])
LDFLAGS="$ac_save_LDFLAGS" LDFLAGS="$ac_save_LDFLAGS"
@ -109,14 +109,21 @@ AC_DEFUN([CC_NOUNDEFINED], [
dnl FreeBSD (et al.) does not complete linking for shared objects when pthreads dnl FreeBSD (et al.) does not complete linking for shared objects when pthreads
dnl are requested, as different implementations are present; to avoid problems dnl are requested, as different implementations are present; to avoid problems
dnl use -Wl,-z,defs only for those platform not behaving this way. dnl use -Wl,-z,defs only for those platform not behaving this way.
*-freebsd*) ;; dnl
dnl MinGW platforms: for libraries required -no-undefined,
dnl use it only for libraries in mingw32-w64
*-freebsd* | *-openbsd*) ;;
*-mingw*)
LDFLAGS_NOUNDEFINED="-no-undefined"
;;
*) *)
dnl First of all check for the --no-undefined variant of GNU ld. This allows dnl First of all check for the --no-undefined variant of GNU ld. This allows
dnl for a much more readable commandline, so that people can understand what dnl for a much more readable commandline, so that people can understand what
dnl it does without going to look for what the heck -z defs does. dnl it does without going to look for what the heck -z defs does.
for possible_flags in "-Wl,--no-undefined" "-Wl,-z,defs"; do for possible_flags in "-Wl,--no-undefined" "-Wl,-z,defs"; do
CC_CHECK_LDFLAGS([$possible_flags], [LDFLAGS_NOUNDEFINED="$possible_flags"]) CC_CHECK_LDFLAGS([$possible_flags], [LDFLAGS_NOUNDEFINED="$possible_flags"])
break if test "x$LDFLAGS_NOUNDEFINED" = "x"; then break; fi
done done
;; ;;
esac esac
@ -147,7 +154,7 @@ AC_DEFUN([CC_CHECK_ATTRIBUTE], [
AS_TR_SH([cc_cv_attribute_$1]), AS_TR_SH([cc_cv_attribute_$1]),
[ac_save_CFLAGS="$CFLAGS" [ac_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $cc_cv_werror" CFLAGS="$CFLAGS $cc_cv_werror"
AC_COMPILE_IFELSE([$3], AC_COMPILE_IFELSE([AC_LANG_SOURCE([$3])],
[eval "AS_TR_SH([cc_cv_attribute_$1])='yes'"], [eval "AS_TR_SH([cc_cv_attribute_$1])='yes'"],
[eval "AS_TR_SH([cc_cv_attribute_$1])='no'"]) [eval "AS_TR_SH([cc_cv_attribute_$1])='no'"])
CFLAGS="$ac_save_CFLAGS" CFLAGS="$ac_save_CFLAGS"
@ -295,11 +302,11 @@ AC_DEFUN([CC_ATTRIBUTE_ALIGNED], [
[ac_save_CFLAGS="$CFLAGS" [ac_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $cc_cv_werror" CFLAGS="$CFLAGS $cc_cv_werror"
for cc_attribute_align_try in 64 32 16 8 4 2; do for cc_attribute_align_try in 64 32 16 8 4 2; do
AC_COMPILE_IFELSE([ AC_COMPILE_IFELSE([AC_LANG_SOURCE([
int main() { int main() {
static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0; static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0;
return c; return c;
}], [cc_cv_attribute_aligned=$cc_attribute_align_try; break]) }])], [cc_cv_attribute_aligned=$cc_attribute_align_try; break])
done done
CFLAGS="$ac_save_CFLAGS" CFLAGS="$ac_save_CFLAGS"
]) ])