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Tweak the cmake interaction between CMAKE_BUILD_TYPE and LLVM_ENABLE_ASSERTIONS.

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The issue is that CMAKE_BUILD_TYPE=RelWithDebInfo LLVM_ENABLE_ASSERTIONS=ON was
not building with assertions enabled.  (I was unable to find what in the LLVM
source tree was adding -DNDEBUG to the build line in this case, so decided that
it must be cmake itself that was adding it - this may depend on the cmake
version).  The fix treats any mode that is not Debug as being the same as
Release for this purpose (previously it was being assumed that cmake would only
add -DNDEBUG for Release and not for RelWithDebInfo or MinSizeRel).  If other
versions of cmake don't add -DNDEBUG for RelWithDebInfo then that's OK: with
this change you just get a useless but harmless -UNDEBUG or -DNDEBUG.

llvm-svn: 186499
This commit is contained in:
Duncan Sands 2013-07-17 09:34:51 +00:00
parent 418481460c
commit d783c807b8
2 changed files with 3 additions and 3 deletions
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2
CMakeLists.txt
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@ -153,7 +153,7 @@ endif()
option(LLVM_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
option(LLVM_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
option(LLVM_ENABLE_ASSERTIONS "Enable assertions" OFF)
else()
option(LLVM_ENABLE_ASSERTIONS "Enable assertions" ON)

4
cmake/modules/HandleLLVMOptions.cmake
View File

@ -17,9 +17,9 @@ if( LLVM_ENABLE_ASSERTIONS )
if( NOT MSVC )
add_definitions( -D_DEBUG )
endif()
# On Release builds cmake automatically defines NDEBUG, so we
# On non-Debug builds cmake automatically defines NDEBUG, so we
# explicitly undefine it:
if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
add_definitions( -UNDEBUG )
# Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines.
string (REGEX REPLACE "(^| )[/-]D *NDEBUG($| )" " "