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| author | Akim Demaille <akim@lrde.epita.fr> | 2013-01-30 15:28:08 +0100 |
|---|---|---|
| committer | Akim Demaille <akim@lrde.epita.fr> | 2013-01-30 16:10:00 +0100 |
| commit | 1217688141e33e03112330a24ff352d9263ef7bc (patch) | |
| tree | cc5294915de98c8a1212f8876ad80ce25e024075 /configure.ac | |
| parent | e8f7155d98c22579c871c293a0daa5f7752e7c2b (diff) | |
| download | bison-1217688141e33e03112330a24ff352d9263ef7bc.tar.gz | |
build: please Clang++ 3.2+ on Flex scanners
Clang++, with -Wall, rejects code generated by Flex (for C scanners):
CXX examples/calc++/examples_calc___calc__-calc++-scanner.o
In file included from examples/calc++/calc++-scanner.cc:1:
error: implicit conversion of NULL constant to 'bool' [-Werror,-Wnull-conversion]
if ( ! ( (yy_buffer_stack) ? (yy_buffer_stack)[(yy_buffer_stack_top)] : __null) ) {
~ ^~~~~~
false
* configure.ac (WARN_NO_NULL_CONVERSION_CXXFLAGS): Compute it.
* examples/calc++/local.mk (examples_calc___calc___CXXFLAGS): Use it.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 76a0ecf9..289b2995 100644 --- a/configure.ac +++ b/configure.ac @@ -133,6 +133,8 @@ if test "$enable_gcc_warnings" = yes; then # Warnings for the test suite only. gl_WARN_ADD([-Wundef], [WARN_CXXFLAGS_TEST]) gl_WARN_ADD([-pedantic], [WARN_CXXFLAGS_TEST]) + # Clang++ 3.2+ reject C code generated by Flex. + gl_WARN_ADD([-Wno-null-conversion], [WARN_NO_NULL_CONVERSION_CXXFLAGS]) # Variants break strict aliasing analysis. gl_WARN_ADD([-fno-strict-aliasing], [NO_STRICT_ALIAS_CXXFLAGS]) CXXFLAGS=$save_CXXFLAGS |