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Disable OpenMP. 

This is unfortunate, but OpenMP is not available on some toolchains
(most MinGW builds) and, more importantly, breaks the distribution
model we use on Windows, which is a single self-contained executable.

Leave the OpenMP disabled by default everywhere so that we don't have
any second-class platforms where SolveSpace is slower than on first-
class ones.

Fixes #631.
pull/640/head
whitequark 2020-06-21 00:55:17 +00:00
parent 0da4a6b78a
commit a80a0337a5
1 changed files with 7 additions and 7 deletions
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14
CMakeLists.txt
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@ -46,6 +46,8 @@ set(ENABLE_COVERAGE OFF CACHE BOOL
"Whether code coverage information will be collected")
set(ENABLE_SANITIZERS OFF CACHE BOOL
"Whether to enable Clang's AddressSanitizer and UndefinedBehaviorSanitizer")
set(ENABLE_OPENMP OFF CACHE BOOL
"Whether geometric operations will be parallelized using OpenMP")
set(OPENGL 3 CACHE STRING "OpenGL version to use (one of: 1 3)")
@ -96,13 +98,11 @@ if(CMAKE_SYSTEM_PROCESSOR STREQUAL "i686" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "X8
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLOAT_FLAGS}")
endif()
# We use OpenMP to speed up some geometric operations, but it's optional.
include(FindOpenMP)
# No MinGW distribution actually ships an OpenMP runtime, but FindOpenMP detects it anyway.
if(OpenMP_FOUND AND NOT MINGW)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
else()
message(WARNING "OpenMP not found, geometric operations will be single-threaded")
if(ENABLE_OPENMP)
include(FindOpenMP)
if(OpenMP_FOUND)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()
endif()
if(APPLE OR CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")