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Clear _FORTIFY_SOURCE before definition

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As clang on macOS defines this macro as 0 internally when a sanitizer
option is given, clear it before definition to suppress redefinition
warnings.
This commit is contained in:
Nobuyoshi Nakada 2022-10-29 16:14:19 +09:00
parent 5e0432f59b
commit c5ca250eb5
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Notes: git 2022-10-29 09:57:54 +00:00 
Merged: https://github.com/ruby/ruby/pull/6646
1 changed files with 2 additions and 1 deletions
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3
configure.ac
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@ -785,7 +785,8 @@ AS_IF([test "$GCC" = yes], [
[disable -D_FORTIFY_SOURCE=2 option, which causes link error on mingw]), [disable -D_FORTIFY_SOURCE=2 option, which causes link error on mingw]),
[fortify_source=$enableval]) [fortify_source=$enableval])
AS_IF([test "x$fortify_source" != xno], [ AS_IF([test "x$fortify_source" != xno], [
RUBY_TRY_CFLAGS([$optflags -D_FORTIFY_SOURCE=2], [RUBY_APPEND_OPTION(XCFLAGS, -D_FORTIFY_SOURCE=2)], [], RUBY_TRY_CFLAGS([$optflags -D_FORTIFY_SOURCE=2],
[RUBY_APPEND_OPTION(XCFLAGS, -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2)], [],
[@%:@include <stdio.h>]) [@%:@include <stdio.h>])
]) ])