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cmake: Allow build system to disable arm neon intrinsics

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This commit is contained in:
Anonymous Maarten
2023-02-26 01:51:19 +01:00
committed by Anonymous Maarten
parent 46de6241d7
commit fc4085b54e
6 changed files with 22 additions and 13 deletions
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18
CMakeLists.txt
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@@ -912,6 +912,7 @@ if(SDL_ASSEMBLY)
if(SDL_ARMSIMD)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS -x none)
check_c_source_compiles("
.text
.arch armv6
@@ -921,6 +922,8 @@ if(SDL_ASSEMBLY)
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
main:
.global main
pld [r0]
uqadd8 r0, r0, r0
" ARMSIMD_FOUND)
@@ -929,8 +932,10 @@ if(SDL_ASSEMBLY)
if(ARMSIMD_FOUND)
set(HAVE_ARMSIMD TRUE)
set(SDL_ARM_SIMD_BLITTERS 1)
enable_language(ASM)
file(GLOB ARMSIMD_SOURCES ${SDL3_SOURCE_DIR}/src/video/arm/pixman-arm-simd*.S)
list(APPEND SOURCE_FILES ${ARMSIMD_SOURCES})
set_property(SOURCE ${ARMSIMD_SOURCES} APPEND PROPERTY COMPILE_OPTIONS -x assembler-with-cpp)
set(WARN_ABOUT_ARM_SIMD_ASM_MIT TRUE)
endif()
endif()
@@ -938,6 +943,7 @@ if(SDL_ASSEMBLY)
if(SDL_ARMNEON)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS -x none)
check_c_source_compiles("
.text
.fpu neon
@@ -949,6 +955,8 @@ if(SDL_ASSEMBLY)
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
main:
.global main
pld [r0]
vmovn.u16 d0, q0
" ARMNEON_FOUND)
@@ -957,8 +965,10 @@ if(SDL_ASSEMBLY)
if(ARMNEON_FOUND)
set(HAVE_ARMNEON TRUE)
set(SDL_ARM_NEON_BLITTERS 1)
enable_language(ASM)
file(GLOB ARMNEON_SOURCES ${SDL3_SOURCE_DIR}/src/video/arm/pixman-arm-neon*.S)
list(APPEND SOURCE_FILES ${ARMNEON_SOURCES})
set_property(SOURCE ${ARMNEON_SOURCES} APPEND PROPERTY COMPILE_OPTIONS -x assembler-with-cpp)
set(WARN_ABOUT_ARM_NEON_ASM_MIT TRUE)
endif()
endif()
@@ -1028,6 +1038,10 @@ if(NOT HAVE_LASX)
set(SDL_DISABLE_LASX 1)
endif()
if(NOT HAVE_ARMNEON)
set(SDL_DISABLE_NEON 1)
endif()
# TODO: Can't deactivate on FreeBSD? w/o LIBC, SDL_stdinc.h can't define
# anything.
if(SDL_LIBC)
@@ -3161,21 +3175,21 @@ if(UNIX)
endif()
if(WARN_ABOUT_ARM_SIMD_ASM_MIT)
message(STATUS "")
message(STATUS "SDL is being built with ARM SIMD optimizations, which")
message(STATUS "uses code licensed under the MIT license. If this is a")
message(STATUS "problem, please disable that code by rerunning CMake with:")
message(STATUS "")
message(STATUS " -DSDL_ARMSIMD=OFF")
message(STATUS "")
endif()
if(WARN_ABOUT_ARM_NEON_ASM_MIT)
message(STATUS "")
message(STATUS "SDL is being built with ARM NEON optimizations, which")
message(STATUS "uses code licensed under the MIT license. If this is a")
message(STATUS "problem, please disable that code by rerunning CMake with:")
message(STATUS "")
message(STATUS " -DSDL_ARMNEON=OFF")
message(STATUS "")
endif()
if(ANDROID)