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https://gitlab.com/OpenMW/openmw.git
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e3a6cb1695
Removes the OsIdentity.cmake file and uses a cross-compilation friendly and OS-independent method of detecting system double-precision bullet instead.
51 lines
1.5 KiB
CMake
51 lines
1.5 KiB
CMake
set(TMP_ROOT ${CMAKE_BINARY_DIR}/try-compile)
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file(MAKE_DIRECTORY ${TMP_ROOT})
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file(WRITE ${TMP_ROOT}/checkbullet.cpp
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"
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#include <BulletCollision/CollisionShapes/btSphereShape.h>
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int main(int argc, char** argv)
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{
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btSphereShape shape(1.0);
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btScalar mass(1.0);
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btVector3 inertia;
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shape.calculateLocalInertia(mass, inertia);
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return 0;
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}
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")
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file(WRITE ${TMP_ROOT}/CMakeLists.txt
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"
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cmake_minimum_required(VERSION 3.1.0)
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project(checkbullet)
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# First, try BulletConfig-float64.cmake which comes with Debian derivatives.
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find_package(Bullet CONFIGS BulletConfig-float64.cmake QUIET COMPONENTS BulletCollision LinearMath)
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if (BULLET_FOUND)
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# Fix the relative include:
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set(BULLET_INCLUDE_DIRS \"\$\{BULLET_ROOT_DIR\}/\$\{BULLET_INCLUDE_DIRS\}\")
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else()
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find_package(Bullet REQUIRED COMPONENTS BulletCollision LinearMath)
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endif()
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string(REGEX MATCHALL \"((optimized|debug);)?[^;]*(BulletCollision|LinearMath)[^;]*\" BULLET_LIBRARIES \"$\{BULLET_LIBRARIES\}\")
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add_executable(checkbullet checkbullet.cpp)
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target_compile_definitions(checkbullet PUBLIC BT_USE_DOUBLE_PRECISION)
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target_include_directories(checkbullet PUBLIC \$\{BULLET_INCLUDE_DIRS\})
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target_link_libraries(checkbullet \$\{BULLET_LIBRARIES\})
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")
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if (DEFINED BULLET_ROOT)
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set(ROOT "-DBULLET_ROOT=${BULLET_ROOT}")
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endif()
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message(STATUS "Checking if Bullet uses double precision")
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try_compile(RESULT_VAR
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${CMAKE_BINARY_DIR}/temp
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${TMP_ROOT}
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checkbullet
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CMAKE_FLAGS "${ROOT}"
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)
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set(HAS_DOUBLE_PRECISION_BULLET ${RESULT_VAR})
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