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authorDmitry Marakasov <amdmi3@amdmi3.ru>2011-08-01 22:17:32 +0400
committerDmitry Marakasov <amdmi3@amdmi3.ru>2011-08-01 22:17:32 +0400
commit318a730c459a8524d7030d261946c35815dd4b29 (patch)
treeb423ef7463f889998e892a81b12336aca2bdcd91 /src
parent9017c51e7fee6b1da3d0309a7a8d151ae96646ec (diff)
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Check whether -Wno-unused-but-set-variable is supported before using
it. It seems to only be available on recent (>=4.6) versions of gcc.
Diffstat (limited to 'src')
-rw-r--r--src/CMakeLists.txt7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ce53651b0..5bdfc7eee 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -209,6 +209,8 @@ endif(BUILD_SERVER)
# Set some optimizations and tweaks
#
+include(CheckCCompilerFlag)
+
if(MSVC)
# Visual Studio
@@ -236,7 +238,10 @@ else()
endif()
if(NOT APPLE)
- set(WARNING_FLAGS "${WARNING_FLAGS} -Wno-unused-but-set-variable")
+ check_c_compiler_flag("-Wno-unused-but-set-variable" HAS_UNUSED_BUT_SET_VARIABLE_WARNING)
+ if(HAS_UNUSED_BUT_SET_VARIABLE_WARNING)
+ set(WARNING_FLAGS "${WARNING_FLAGS} -Wno-unused-but-set-variable")
+ endif(HAS_UNUSED_BUT_SET_VARIABLE_WARNING)
endif()
if(APPLE)