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| author | Dmitri Gribenko <gribozavr@gmail.com> | 2013-02-13 21:19:39 +0000 |
|---|---|---|
| committer | Dmitri Gribenko <gribozavr@gmail.com> | 2013-02-13 21:19:39 +0000 |
| commit | 7c62701c2273839f15a65b4f43ac71b270673221 (patch) | |
| tree | 8c3d6b07a940356abe6584e2cd7a8636fbbc282a /autoconf | |
| parent | ccb51f923f30b36c9dc0bd9070a29116250428bf (diff) | |
| download | external_llvm-7c62701c2273839f15a65b4f43ac71b270673221.zip external_llvm-7c62701c2273839f15a65b4f43ac71b270673221.tar.gz external_llvm-7c62701c2273839f15a65b4f43ac71b270673221.tar.bz2 | |
configure: remove workaround for gcc's -Wno-maybe-uninitialized
Since r174770 gcc version check is not needed because CXX_FLAG_CHECK
implements the workaround itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175080 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 28 |
1 files changed, 5 insertions, 23 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index ae615df..b8f1766 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -1272,39 +1272,21 @@ CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros]) CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers]) CXX_FLAG_CHECK(NO_NESTED_ANON_TYPES, [-Wno-nested-anon-types]) CXX_FLAG_CHECK(COVERED_SWITCH_DEFAULT, [-Wcovered-switch-default]) + dnl GCC's potential uninitialized use analysis is weak and presents lots of dnl false positives, so disable it. +NO_UNINITIALIZED= +NO_MAYBE_UNINITIALIZED= if test "$GXX" = "yes" then CXX_FLAG_CHECK(NO_MAYBE_UNINITIALIZED, [-Wno-maybe-uninitialized]) dnl gcc 4.7 introduced -Wmaybe-uninitialized to distinguish cases which are - dnl known to be uninitialized from cases which might be uninitialized. We + dnl known to be uninitialized from cases which might be uninitialized. We dnl still want to catch the first kind of errors. - if test "$NO_MAYBE_UNINITIALIZED" != "-Wno-maybe-uninitialized" + if test -z "$NO_MAYBE_UNINITIALIZED" then CXX_FLAG_CHECK(NO_UNINITIALIZED, [-Wno-uninitialized]) - else - dnl Some versions of gcc accept unsupported -W flags if there is - dnl no warning but stop with an error when a warning is - dnl encountered. If this gcc is earlier than 4.7, just use - dnl -Wno-uninitialized. - gxx_version=`$CXX -dumpversion` - gxx_version_major=`echo $gxx_version | cut -d'.' -f1` - gxx_version_minor=`echo $gxx_version | cut -d'.' -f2` - gxx_version_patch=`echo $gxx_version | cut -d'.' -f3` - - if test "$gxx_version_major" -ge "4" \ - && test "$gxx_version_minor" -ge "7"; then - dnl AC_SUBST doesn't work with empty strings. - NO_UNINITIALIZED= - else - NO_MAYBE_UNINITIALIZED= - CXX_FLAG_CHECK(NO_UNINITIALIZED, [-Wno-uninitialized]) - fi fi -else - NO_UNINITIALIZED= - NO_MAYBE_UNINITIALIZED= fi AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $NO_NESTED_ANON_TYPES $COVERED_SWITCH_DEFAULT $NO_UNINITIALIZED $NO_MAYBE_UNINITIALIZED]) |