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Simplify the bullet detection. This way we don't need to explicitly pass

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all possible variables to the try_compile stuff
This commit is contained in:
fredzio 2021-05-04 22:18:30 +02:00
parent 0f33734f5d
commit 231780a51d
1 changed files with 5 additions and 29 deletions
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34
cmake/CheckBulletPrecision.cmake
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@ -14,37 +14,13 @@ int main(int argc, char** argv)
}
")
file(WRITE ${TMP_ROOT}/CMakeLists.txt
"
cmake_minimum_required(VERSION 3.1.0)
project(checkbullet)
# First, try BulletConfig-float64.cmake which comes with Debian derivatives.
find_package(Bullet CONFIGS BulletConfig-float64.cmake QUIET COMPONENTS BulletCollision LinearMath)
if (BULLET_FOUND)
# Fix the relative include:
set(BULLET_INCLUDE_DIRS \"\$\{BULLET_ROOT_DIR\}/\$\{BULLET_INCLUDE_DIRS\}\")
else()
find_package(Bullet REQUIRED COMPONENTS BulletCollision LinearMath)
endif()
string(REGEX MATCHALL \"((optimized|debug);)?[^;]*(BulletCollision|LinearMath)[^;]*\" BULLET_LIBRARIES \"$\{BULLET_LIBRARIES\}\")
add_executable(checkbullet checkbullet.cpp)
target_compile_definitions(checkbullet PUBLIC BT_USE_DOUBLE_PRECISION)
target_include_directories(checkbullet PUBLIC \$\{BULLET_INCLUDE_DIRS\})
target_link_libraries(checkbullet \$\{BULLET_LIBRARIES\})
")
if (DEFINED BULLET_ROOT)
set(ROOT "-DBULLET_ROOT=${BULLET_ROOT}")
endif()
message(STATUS "Checking if Bullet uses double precision")
try_compile(RESULT_VAR
${CMAKE_BINARY_DIR}/temp
${TMP_ROOT}
checkbullet
CMAKE_FLAGS "${ROOT}"
${TMP_ROOT}/temp
${TMP_ROOT}/checkbullet.cpp
COMPILE_DEFINITIONS "-DBT_USE_DOUBLE_PRECISION"
LINK_LIBRARIES ${BULLET_LIBRARIES}
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES=${BULLET_INCLUDE_DIRS}"
)
set(HAS_DOUBLE_PRECISION_BULLET ${RESULT_VAR})