libs/apr/patches/000-071-backport-fix-APR_TRY_COMPILE_NO_WARNING.patch

   1 From ea9344182b7559b12aa523548bb6d37d0e009028
   2 From: Yann Ylavic <ylavic@apache.org>
   3 Date: Wed, 24 Mar 2021 15:02:52 +0000
   4 Subject: [PATCH] Follow up to r1887279: fix new APR_TRY_COMPILE_NO_WARNING.
   5
   6 AC_LANG_PROGRAM generates an "int main()" prototype which some compilers warn
   7 about. Restore AC_LANG_SOURCE to manually set the correct main() but do not
   8 #include "confdefs.h" if it is inlined already by AC_LANG_SOURCE (i.e.
   9 check whether PACKAGE_NAME is already defined).
  10
  11 Github: closes #25
  12
  13
  14 git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@1888017 13f79535-47bb-0310-9956-ffa450edef68
  15 ---
  16  build/apr_common.m4 | 11 +++++++++--
  17  1 file changed, 9 insertions(+), 2 deletions(-)
  18
  19 --- a/build/apr_common.m4
  20 +++ b/build/apr_common.m4
  21 @@ -467,9 +467,16 @@ AC_DEFUN([APR_TRY_COMPILE_NO_WARNING],
  22     CFLAGS="$CFLAGS -Werror"
  23   fi
  24   AC_COMPILE_IFELSE(
  25 -  [AC_LANG_PROGRAM(
  26 -   [[$1]],
  27 +  [AC_LANG_SOURCE(
  28 +   [
  29 +#ifndef PACKAGE_NAME
  30 +#include "confdefs.h"
  31 +#endif
  32 +   ]
  33 +   [[$1]]
  34 +   [int main(int argc, const char *const *argv) {]
  35     [[$2]]
  36 +   [   return 0; }]
  37    )], [CFLAGS=$apr_save_CFLAGS
  38  $3],  [CFLAGS=$apr_save_CFLAGS
  39  $4])