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63 lines
2.3 KiB
Diff
63 lines
2.3 KiB
Diff
diff --git a/CMakeLists.txt b/CMakeLists.txt
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index 6451fcf1b..dbd5016ca 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -63,11 +63,22 @@ option(PNG_HARDWARE_OPTIMIZATIONS "Enable hardware optimizations" ON)
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set(PNG_PREFIX "" CACHE STRING "Prefix to add to the API function names")
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set(DFA_XTRA "" CACHE FILEPATH "File containing extra configuration settings")
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+# CMake currently sets CMAKE_SYSTEM_PROCESSOR to one of x86_64 or arm64 on macOS,
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+# based upon the OS architecture, not the target architecture. As such, we need
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+# to check CMAKE_OSX_ARCHITECTURES to identify which hardware-specific flags to
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+# enable. Note that this will fail if you attempt to build a universal binary in
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+# a single cmake invokation.
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+if (APPLE AND CMAKE_OSX_ARCHITECTURES)
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+ set(TARGET_ARCH ${CMAKE_OSX_ARCHITECTURES})
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+else()
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+ set(TARGET_ARCH ${CMAKE_SYSTEM_PROCESSOR})
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+endif()
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+
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if(PNG_HARDWARE_OPTIMIZATIONS)
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# set definitions and sources for arm
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-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" OR
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- CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
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+if(TARGET_ARCH MATCHES "^arm" OR
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+ TARGET_ARCH MATCHES "^aarch64")
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set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
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set(PNG_ARM_NEON "check" CACHE STRING "Enable ARM NEON optimizations:
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check: (default) use internal checking code;
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@@ -121,8 +132,8 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc*" OR
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endif()
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# set definitions and sources for intel
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-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR
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- CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*")
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+if(TARGET_ARCH MATCHES "^i?86" OR
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+ TARGET_ARCH MATCHES "^x86_64*")
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set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
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set(PNG_INTEL_SSE "on" CACHE STRING "Enable INTEL_SSE optimizations:
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off: disable the optimizations")
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@@ -171,8 +182,8 @@ endif()
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else(PNG_HARDWARE_OPTIMIZATIONS)
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# set definitions and sources for arm
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-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" OR
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- CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
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+if(TARGET_ARCH MATCHES "^arm" OR
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+ TARGET_ARCH MATCHES "^aarch64")
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add_definitions(-DPNG_ARM_NEON_OPT=0)
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endif()
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@@ -183,8 +194,8 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc*" OR
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endif()
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# set definitions and sources for intel
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-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR
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- CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*")
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+if(TARGET_ARCH MATCHES "^i?86" OR
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+ TARGET_ARCH MATCHES "^x86_64")
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add_definitions(-DPNG_INTEL_SSE_OPT=0)
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endif()
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