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opencv/3rdparty/libpng/CMakeLists.txt
Alexander Smorkalov 4824354e46
Merge pull request #25631 from asmorkalov:as/png_build_fix 
Fixed CMake Missing variable is: CMAKE_ASM_COMPILE_OBJECT in PNG build #25631

Error message with `-DBUILD_PNG=ON` on ARM64:
```
-- Configuring done
CMake Error: Error required internal CMake variable not set, cmake may not be built correctly.
Missing variable is:
CMAKE_ASM_COMPILE_OBJECT
-- Generating done
CMake Generate step failed.  Build files cannot be regenerated correctly.
```

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-05-23 17:14:01 +03:00

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# ----------------------------------------------------------------------------
# CMake file for libpng. See root CMakeLists.txt
#
# ----------------------------------------------------------------------------
project(${PNG_LIBRARY} C)
if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU AND NOT EMSCRIPTEN)
find_library(M_LIBRARY m)
if(M_LIBRARY)
set(M_LIBRARY m)
else()
set(M_LIBRARY "")
endif()
else()
# libm is not available or not needed.
endif()
ocv_include_directories("${CMAKE_CURRENT_SOURCE_DIR}" ${ZLIB_INCLUDE_DIRS})
file(GLOB lib_srcs *.c)
file(GLOB lib_hdrs *.h)
# CMake currently sets CMAKE_SYSTEM_PROCESSOR to one of x86_64 or arm64 on macOS,
# based upon the OS architecture, not the target architecture. As such, we need
# to check CMAKE_OSX_ARCHITECTURES to identify which hardware-specific flags to
# enable. Note that this will fail if you attempt to build a universal binary in
# a single CMake invocation.
if(APPLE AND CMAKE_OSX_ARCHITECTURES)
set(TARGET_ARCH ${CMAKE_OSX_ARCHITECTURES})
else()
set(TARGET_ARCH ${CMAKE_SYSTEM_PROCESSOR})
endif()
OCV_OPTION(PNG_HARDWARE_OPTIMIZATIONS "Enable Hardware Optimizations, if available for this platform" (NOT CV_DISABLE_OPTIMIZATION))
if(PNG_HARDWARE_OPTIMIZATIONS)
# Set definitions and sources for ARM.
if(TARGET_ARCH MATCHES "^(ARM|arm|aarch)")
if(TARGET_ARCH MATCHES "^(ARM64|arm64|aarch64)")
set(PNG_ARM_NEON_POSSIBLE_VALUES on off)
set(PNG_ARM_NEON "on"
CACHE STRING "Enable ARM NEON optimizations: on|off; on is default")
else()
set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
set(PNG_ARM_NEON "off"
CACHE STRING "Enable ARM NEON optimizations: check|on|off; off is default")
endif()
set_property(CACHE PNG_ARM_NEON
PROPERTY STRINGS ${PNG_ARM_NEON_POSSIBLE_VALUES})
list(FIND PNG_ARM_NEON_POSSIBLE_VALUES ${PNG_ARM_NEON} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_ARM_NEON must be one of [${PNG_ARM_NEON_POSSIBLE_VALUES}]")
elseif(NOT PNG_ARM_NEON STREQUAL "off")
list(APPEND lib_srcs arm/arm_init.c arm/filter_neon_intrinsics.c arm/palette_neon_intrinsics.c)
if(NOT MSVC)
enable_language(ASM)
list(APPEND lib_srcs arm/filter_neon.S)
endif()
if(PNG_ARM_NEON STREQUAL "on")
add_definitions(-DPNG_ARM_NEON_OPT=2)
elseif(PNG_ARM_NEON STREQUAL "check")
add_definitions(-DPNG_ARM_NEON_CHECK_SUPPORTED)
endif()
else()
add_definitions(-DPNG_ARM_NEON_OPT=0) # NEON assembler is not supported
endif()
endif()
# Set definitions and sources for PowerPC.
if(TARGET_ARCH MATCHES "^(powerpc|ppc64)")
set(PNG_POWERPC_VSX_POSSIBLE_VALUES on off)
set(PNG_POWERPC_VSX "on"
CACHE STRING "Enable POWERPC VSX optimizations: on|off; on is default")
set_property(CACHE PNG_POWERPC_VSX
PROPERTY STRINGS ${PNG_POWERPC_VSX_POSSIBLE_VALUES})
list(FIND PNG_POWERPC_VSX_POSSIBLE_VALUES ${PNG_POWERPC_VSX} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_POWERPC_VSX must be one of [${PNG_POWERPC_VSX_POSSIBLE_VALUES}]")
elseif(NOT PNG_POWERPC_VSX STREQUAL "off")
list(APPEND lib_srcs powerpc/powerpc_init.c powerpc/filter_vsx_intrinsics.c)
if(PNG_POWERPC_VSX STREQUAL "on")
add_definitions(-DPNG_POWERPC_VSX_OPT=2)
endif()
else()
add_definitions(-DPNG_POWERPC_VSX_OPT=0)
endif()
endif()
# Set definitions and sources for Intel.
if(TARGET_ARCH MATCHES "^(i[3-6]86|x86|AMD64)")
set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
set(PNG_INTEL_SSE "on"
CACHE STRING "Enable INTEL_SSE optimizations: on|off; on is default")
set_property(CACHE PNG_INTEL_SSE
PROPERTY STRINGS ${PNG_INTEL_SSE_POSSIBLE_VALUES})
list(FIND PNG_INTEL_SSE_POSSIBLE_VALUES ${PNG_INTEL_SSE} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_INTEL_SSE must be one of [${PNG_INTEL_SSE_POSSIBLE_VALUES}]")
elseif(NOT PNG_INTEL_SSE STREQUAL "off")
list(APPEND lib_srcs intel/intel_init.c intel/filter_sse2_intrinsics.c)
if(PNG_INTEL_SSE STREQUAL "on")
add_definitions(-DPNG_INTEL_SSE_OPT=1)
endif()
else()
add_definitions(-DPNG_INTEL_SSE_OPT=0)
endif()
endif()
# Set definitions and sources for MIPS.
if(TARGET_ARCH MATCHES "^(mipsel|mips64el)")
set(PNG_MIPS_MSA_POSSIBLE_VALUES on off)
set(PNG_MIPS_MSA "on"
CACHE STRING "Enable MIPS_MSA optimizations: on|off; on is default")
set_property(CACHE PNG_MIPS_MSA
PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index_msa)
if(index_msa EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
endif()
set(PNG_MIPS_MMI_POSSIBLE_VALUES on off)
set(PNG_MIPS_MMI "on"
CACHE STRING "Enable MIPS_MMI optimizations: on|off; on is default")
set_property(CACHE PNG_MIPS_MMI
PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MMI_POSSIBLE_VALUES ${PNG_MIPS_MMI} index_mmi)
if(index_mmi EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MMI must be one of [${PNG_MIPS_MMI_POSSIBLE_VALUES}]")
endif()
if(PNG_MIPS_MSA STREQUAL "on" AND PNG_MIPS_MMI STREQUAL "on")
list(APPEND lib_srcs mips/mips_init.c mips/filter_msa_intrinsics.c mips/filter_mmi_inline_assembly.c)
add_definitions(-DPNG_MIPS_MSA_OPT=2)
add_definitions(-DPNG_MIPS_MMI_OPT=1)
elseif(PNG_MIPS_MSA STREQUAL "on")
list(APPEND lib_srcs mips/mips_init.c mips/filter_msa_intrinsics.c)
add_definitions(-DPNG_MIPS_MSA_OPT=2)
add_definitions(-DPNG_MIPS_MMI_OPT=0)
elseif(PNG_MIPS_MMI STREQUAL "on")
list(APPEND lib_srcs mips/mips_init.c mips/filter_mmi_inline_assembly.c)
add_definitions(-DPNG_MIPS_MSA_OPT=0)
add_definitions(-DPNG_MIPS_MMI_OPT=1)
else()
add_definitions(-DPNG_MIPS_MSA_OPT=0)
add_definitions(-DPNG_MIPS_MMI_OPT=0)
endif()
endif()
# Set definitions and sources for LoongArch.
if(TARGET_ARCH MATCHES "^(loongarch)")
include(CheckCCompilerFlag)
set(PNG_LOONGARCH_LSX_POSSIBLE_VALUES on off)
set(PNG_LOONGARCH_LSX "on"
CACHE STRING "Enable LOONGARCH_LSX optimizations: on|off; on is default")
set_property(CACHE PNG_LOONGARCH_LSX
PROPERTY STRINGS ${PNG_LOONGARCH_LSX_POSSIBLE_VALUES})
list(FIND PNG_LOONGARCH_LSX_POSSIBLE_VALUES ${PNG_LOONGARCH_LSX} index)
if(index EQUAL -1)
message(FATAL_ERROR "PNG_LOONGARCH_LSX must be one of [${PNG_LOONGARCH_LSX_POSSIBLE_VALUES}]")
elseif(NOT PNG_LOONGARCH_LSX STREQUAL "off")
CHECK_C_COMPILER_FLAG("-mlsx" COMPILER_SUPPORTS_LSX)
if(COMPILER_SUPPORTS_LSX)
set(libpng_loongarch_sources
loongarch/loongarch_lsx_init.c
loongarch/filter_lsx_intrinsics.c)
set_source_files_properties(${libpng_loongarch_sources}
PROPERTIES
COMPILE_FLAGS "-mlsx")
list(APPEND lib_srcs ${libpng_loongarch_sources})
add_definitions(-DPNG_LOONGARCH_LSX_OPT=1)
else()
message(FATAL_ERROR "Compiler does not support -mlsx option")
endif()
else()
add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
endif()
endif()
else(PNG_HARDWARE_OPTIMIZATIONS)
# Set definitions and sources for ARM.
if(TARGET_ARCH MATCHES "^(ARM|arm|aarch)")
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
# Set definitions and sources for PowerPC.
if(TARGET_ARCH MATCHES "^(powerpc|ppc64)")
add_definitions(-DPNG_POWERPC_VSX_OPT=0)
endif()
# Set definitions and sources for Intel.
if(TARGET_ARCH MATCHES "^(i[3-6]86|x86|AMD64)")
add_definitions(-DPNG_INTEL_SSE_OPT=0)
endif()
# Set definitions and sources for MIPS.
if(TARGET_ARCH MATCHES "^(mipsel|mips64el)")
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
# Set definitions and sources for LoongArch.
if(TARGET_ARCH MATCHES "^(loongarch)")
add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
endif()
endif(PNG_HARDWARE_OPTIMIZATIONS)
# ----------------------------------------------------------------------------------
# Define the library target:
# ----------------------------------------------------------------------------------
if(MSVC)
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
endif(MSVC)
add_library(${PNG_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs} ${lib_hdrs})
target_link_libraries(${PNG_LIBRARY} ${ZLIB_LIBRARIES})
ocv_warnings_disable(CMAKE_C_FLAGS -Wundef -Wcast-align -Wimplicit-fallthrough -Wunused-parameter -Wsign-compare
-Wmaybe-uninitialized
-Wnull-pointer-subtraction # clang15
-Wunused-but-set-variable # clang15
)
set_target_properties(${PNG_LIBRARY}
PROPERTIES OUTPUT_NAME ${PNG_LIBRARY}
DEBUG_POSTFIX "${OPENCV_DEBUG_POSTFIX}"
COMPILE_PDB_NAME ${PNG_LIBRARY}
COMPILE_PDB_NAME_DEBUG "${PNG_LIBRARY}${OPENCV_DEBUG_POSTFIX}"
ARCHIVE_OUTPUT_DIRECTORY ${3P_LIBRARY_OUTPUT_PATH}
)
if(ENABLE_SOLUTION_FOLDERS)
set_target_properties(${PNG_LIBRARY} PROPERTIES FOLDER "3rdparty")
endif()
if(NOT BUILD_SHARED_LIBS)
ocv_install_target(${PNG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
endif()
ocv_install_3rdparty_licenses(libpng LICENSE README)
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