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| author | Sam James <sam@gentoo.org> | 2022-11-04 01:53:32 +0000 |
|---|---|---|
| committer | Sam James <sam@gentoo.org> | 2022-11-05 06:22:05 +0000 |
| commit | 69aa78133144fe7276dd4fe7f2eb7ff64f0a8337 (patch) | |
| tree | cd9382f9a35376d545cb9b8a8d0d93d12c8d348f | |
| parent | 0eb070e437ae2ac0e25e4795d20df145d7bbfbee (diff) | |
| download | raptor-69aa78133144fe7276dd4fe7f2eb7ff64f0a8337.tar.gz | |
configure.ac: fix -Wimplicit-function-declaration in HAVE___FUNCTION__ test (Clang 16)
Clang 16 will make -Wimplicit-function-declaration
errors by default.
```
error: call to undeclared library function 'printf' with type 'int (const char *, ...)'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared library function 'printf' with type 'int (const char *, ...)'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
```
For more information, see LWN.net [0] or LLVM's Discourse [1], gentoo-dev@ [2],
or the (new) c-std-porting mailing list [3].
[0] https://lwn.net/Articles/913505/
[1] https://discourse.llvm.org/t/configure-script-breakage-with-the-new-werror-implicit-function-declaration/65213
[2] https://archives.gentoo.org/gentoo-dev/message/dd9f2d3082b8b6f8dfbccb0639e6e240
[3] hosted at lists.linux.dev.
Signed-off-by: Sam James <sam@gentoo.org>
| -rw-r--r-- | configure.ac | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index fae94798..84fc6bbc 100644 --- a/configure.ac +++ b/configure.ac @@ -335,7 +335,8 @@ AC_C_BIGENDIAN AC_C_INLINE AC_MSG_CHECKING(whether __FUNCTION__ is available) -AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main() { printf(__FUNCTION__); }])], +AC_COMPILE_IFELSE([AC_LANG_SOURCE([#include <stdio.h> +int main() { printf(__FUNCTION__); }])], [AC_DEFINE([HAVE___FUNCTION__], [1], [Is __FUNCTION__ available]) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)]) |