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| author | Brent Cook <bcook@openbsd.org> | 2015-07-15 20:24:05 -0500 |
|---|---|---|
| committer | Brent Cook <bcook@openbsd.org> | 2015-07-15 20:24:05 -0500 |
| commit | c1a162d83b12babd697586ede45815f890d7a40e (patch) | |
| tree | 679f18f7a17cce3b8bb906e54bba1049b47fb45a | |
| parent | db974c34e95a24eda7ce575cc14bbc0eebfbdbb4 (diff) | |
| download | portable-c1a162d83b12babd697586ede45815f890d7a40e.tar.gz portable-c1a162d83b12babd697586ede45815f890d7a40e.tar.bz2 portable-c1a162d83b12babd697586ede45815f890d7a40e.zip | |
disable strict aliasing by default, noticed by miod@
| -rw-r--r-- | m4/disable-compiler-warnings.m4 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/m4/disable-compiler-warnings.m4 b/m4/disable-compiler-warnings.m4 index 2792722..9dae100 100644 --- a/m4/disable-compiler-warnings.m4 +++ b/m4/disable-compiler-warnings.m4 | |||
| @@ -26,4 +26,14 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], | |||
| 26 | [AC_MSG_RESULT([no])] | 26 | [AC_MSG_RESULT([no])] |
| 27 | ) | 27 | ) |
| 28 | CFLAGS="$save_cflags $AM_CFLAGS" | 28 | CFLAGS="$save_cflags $AM_CFLAGS" |
| 29 | |||
| 30 | save_cflags="$CFLAGS" | ||
| 31 | CFLAGS=-fno-strict-aliasing | ||
| 32 | AC_MSG_CHECKING([whether CC supports -fno-strict-aliasing]) | ||
| 33 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], | ||
| 34 | [AC_MSG_RESULT([yes])] | ||
| 35 | [AM_CFLAGS=-fno-strict-aliasing], | ||
| 36 | [AC_MSG_RESULT([no])] | ||
| 37 | ) | ||
| 38 | CFLAGS="$save_cflags $AM_CFLAGS" | ||
| 29 | ]) | 39 | ]) |