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| author | Benjamin Peterson <benjamin@python.org> | 2011-09-23 17:23:22 (GMT) |
|---|---|---|
| committer | Benjamin Peterson <benjamin@python.org> | 2011-09-23 17:23:22 (GMT) |
| commit | 7ddbf10589a64efd884ab002b79665559f45019e (patch) | |
| tree | 532aba654de1b186e093fe529949a26bd65ed2ce /configure.in | |
| parent | a1fe1f8dcfd43059c38b1493ec67af06fd2afe7f (diff) | |
| download | cpython-7ddbf10589a64efd884ab002b79665559f45019e.zip cpython-7ddbf10589a64efd884ab002b79665559f45019e.tar.gz cpython-7ddbf10589a64efd884ab002b79665559f45019e.tar.bz2 | |
disable unused result warnings when possible
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 315a832..d5f00b2 100644 --- a/configure.in +++ b/configure.in @@ -981,6 +981,28 @@ yes) BASECFLAGS="$BASECFLAGS -fno-strict-aliasing" fi + AC_MSG_CHECKING(if we can turn off $CC unused result warning) + ac_save_cc="$CC" + CC="$CC -Wunused-result -Werror" + save_CFLAGS="$CFLAGS" + AC_CACHE_VAL(ac_cv_disable_unused_result_warning, + AC_COMPILE_IFELSE( + [ + AC_LANG_PROGRAM([[]], [[]]) + ],[ + ac_cv_disable_unused_result_warning=yes + ],[ + ac_cv_disable_unused_result_warning=no + ])) + CFLAGS="$save_CFLAGS" + CC="$ac_save_cc" + AC_MSG_RESULT($ac_cv_disable_unused_result_warning) + + if test $ac_cv_disable_unused_result_warning = yes + then + BASECFLAGS="$BASECFLAGS -Wno-unused-result" + fi + # if using gcc on alpha, use -mieee to get (near) full IEEE 754 # support. Without this, treatment of subnormals doesn't follow # the standard. |