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| author | Charles-François Natali <cf.natali@gmail.com> | 2014-08-01 20:57:49 (GMT) |
|---|---|---|
| committer | Charles-François Natali <cf.natali@gmail.com> | 2014-08-01 20:57:49 (GMT) |
| commit | 7f9cc9359bdbcc877b2a6f976c8e8bdbc714ce90 (patch) | |
| tree | 1295d2f983a2590238cb0222c560f222aa14d923 /configure.ac | |
| parent | 30575c73639468f1c5ab207ce37816eaa4827473 (diff) | |
| download | cpython-7f9cc9359bdbcc877b2a6f976c8e8bdbc714ce90.zip cpython-7f9cc9359bdbcc877b2a6f976c8e8bdbc714ce90.tar.gz cpython-7f9cc9359bdbcc877b2a6f976c8e8bdbc714ce90.tar.bz2 | |
Issue #22110: Enable extra compilation warnings.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 3e8c49c..f396984 100644 --- a/configure.ac +++ b/configure.ac @@ -1234,6 +1234,52 @@ yes) BASECFLAGS="$BASECFLAGS -Werror=declaration-after-statement" fi + AC_MSG_CHECKING(if we can turn on $CC mixed sign comparison warning) + ac_save_cc="$CC" + CC="$CC -Wsign-compare" + save_CFLAGS="$CFLAGS" + AC_CACHE_VAL(ac_cv_enable_sign_compare_warning, + AC_COMPILE_IFELSE( + [ + AC_LANG_PROGRAM([[]], [[]]) + ],[ + ac_cv_enable_sign_compare_warning=yes + ],[ + ac_cv_enable_sign_compare_warning=no + ])) + CFLAGS="$save_CFLAGS" + CC="$ac_save_cc" + AC_MSG_RESULT($ac_cv_enable_sign_compare_warning) + + if test $ac_cv_enable_sign_compare_warning = yes + then + BASECFLAGS="$BASECFLAGS -Wsign-compare" + fi + + AC_MSG_CHECKING(if we can turn on $CC unreachable code warning) + ac_save_cc="$CC" + CC="$CC -Wunreachable-code" + save_CFLAGS="$CFLAGS" + AC_CACHE_VAL(ac_cv_enable_unreachable_code_warning, + AC_COMPILE_IFELSE( + [ + AC_LANG_PROGRAM([[]], [[]]) + ],[ + ac_cv_enable_unreachable_code_warning=yes + ],[ + ac_cv_enable_unreachable_code_warning=no + ])) + CFLAGS="$save_CFLAGS" + CC="$ac_save_cc" + AC_MSG_RESULT($ac_cv_enable_unreachable_code_warning) + + # Don't enable unreachable code warning in debug mode, since it usually + # results in non-standard code paths. + if test $ac_cv_enable_unreachable_code_warning = yes && test "$Py_DEBUG" != "true" + then + BASECFLAGS="$BASECFLAGS -Wunreachable-code" + 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. |