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| 1 # Notes, just me trying to understand the .mk files with pseudocode... |
| 2 # Probably the main thing about building asm is making sure the -D defines are |
| 3 # set for each platform, and maybe -fPIC, etc compiler options are essential. |
| 4 |
| 5 # --------- arch.mk --------- |
| 6 # if ARCH == *86 || ARCH == x86_64 |
| 7 # x86-common.mk |
| 8 # if ARCH == arm* && ARCH != arm64 && USE_ASM |
| 9 # ASM_ARCH = arm |
| 10 # ASM_FLAGS += codec/common/arm |
| 11 # CFLAGS += -DHAVE_NEON |
| 12 # if ARCH == arm64 || aarch64 |
| 13 # ASM_ARCH = arm64 |
| 14 # ASMFLAGS += codec/common/arm64 |
| 15 # CFLAGS += -DHAVE_NEON_AARCH64 |
| 16 |
| 17 # --------- x86-common.mk --------- |
| 18 # CFLAGS_M32 = -m32 |
| 19 # CFLAGS_M64 = -m64 |
| 20 # ASM_INCLUDES = codec/common/x86 |
| 21 # if ENABLE64BIT |
| 22 # ARCH = x86_64 |
| 23 # else |
| 24 # ARCH = x86 |
| 25 # if ARCH == x86_64 |
| 26 # CFLAGS += -m64 |
| 27 # LDFLAGS += -m64 |
| 28 # ASMFLAGS_PLATFORM = -DUNIX64 |
| 29 # else |
| 30 # CFLAGS += -m32 |
| 31 # LDFLAGS += -m32 |
| 32 # ASMFLAGS_PLATFORM = -DX86_32 |
| 33 # if USE_ASM |
| 34 # CFLAGS += -DX86_ASM |
| 35 # if ARCH != x86_64 |
| 36 # CFLAGS += -DX86_32_ASM |
| 37 # ASM_ARCH = x86 |
| 38 # ASM = nasm |
| 39 # ASMFLAGS += <ASMFLAGS_PLATFORM> |
| 40 |
| 41 # --------- platform-linux.mk --------- |
| 42 # include arch.mk |
| 43 # |
| 44 # <SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, SHLDFLAGS, AR_OPTS set...> |
| 45 # |
| 46 # CFLAGS += -Wall -fno-strict-aliasing -fPIC -MMD -MP |
| 47 # if ASM_ARCH == x86 |
| 48 # if ARCH == x86_64 |
| 49 # ASMFLAGS += -f elf64 |
| 50 # else |
| 51 # ASMFLAGS += -f elf |
| 52 # if ASM_ARCH == arm |
| 53 # ASMFLAGS += -march=armv7-a -mfpu=neon |
| 54 # |
| 55 # if CXX == clang++ |
| 56 # CXXFLAGS += -Wc++11-compat-reserved-user-defined-literal |
| 57 |
| 58 # --------- platform-bsd.mk --------- |
| 59 # ... |
| 60 # do we care about this? there's platform-darwin.mk as well for mac |
| 61 |
| 62 # --------- platform-darwin.mk --------- |
| 63 # include arch.mk |
| 64 # |
| 65 # <SHAREDLIB_DIR, SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, SHLDFLAGS, SHARED set...
> |
| 66 # |
| 67 # CFLAGS += -Wall -fPIC -MMD -MP |
| 68 # LDFLAGS += -lpthread |
| 69 # if ASM_ARCH == x86 |
| 70 # ASMFLAGS += -DPREFIX |
| 71 # if ARCH == x86_64 |
| 72 # ASMFLAGS += -f macho64 |
| 73 # else |
| 74 # ASMFLAGS += -f macho |
| 75 # LDFLAGS += -read_only_relocs suppress |
| 76 |
| 77 # --------- platform-ios.mk --------- |
| 78 # ARCH = armv7 |
| 79 # include platform-darwin-mk |
| 80 # CXX = clang++ |
| 81 # CC clang |
| 82 # if ARCH == *86 || ARCH == x86_64 |
| 83 # SDKTYPE = iPhoneSimulator |
| 84 # else |
| 85 # SDKTYPE = iPhoneOS |
| 86 # SDK = <... shell command for sdk version ...> |
| 87 # SDK_MIN = 5.1 |
| 88 # |
| 89 # <XCODE, SDKROOT set...> |
| 90 # |
| 91 # CFLAGS += <...> |
| 92 # LDFLAGS += <...> |
| 93 |
| 94 # --------- platform-msvc.mk --------- |
| 95 # --------- platform-msvc-app.mk --------- |
| 96 # --------- platform-msvc-wp.mk --------- |
| 97 # Visual Studio builds (win and win phone), don't care about these? |
| 98 # - Actually Visual Studio is used to build win, not mingw? Care! |
| 99 |
| 100 # --------- platform-mingw_nt.mk --------- |
| 101 # i.e. Windows when not building with Visual Studio? |
| 102 # include x86-common.mk |
| 103 # |
| 104 # <SHAREDLIB_DIR, SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, EXTRA_LIBRARY, SHLDFLAGS
set...> |
| 105 # |
| 106 # CFLAGS += -MMD -MP |
| 107 # LDFLAGS += # empty line wtf? |
| 108 # if ARCH == x86_64 |
| 109 # ASMFLAGS += -f win64 |
| 110 # ASMFLAGS_PLATFORM = -DWIN64 |
| 111 # CC = x86_64-w64-mingw32-gcc |
| 112 # CXX = x86_64-w64-mingw32-g++ |
| 113 # AR = x86_64-w64-mingw32-ar |
| 114 # else |
| 115 # ASMFLAGS += -f win32 -DPREFIX |
| 116 # EXEEXT = .exe |
| 117 |
| 118 # --------- platform-android.mk --------- |
| 119 # ARCH = arm |
| 120 # include arch.mk |
| 121 # |
| 122 # <SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, SHLDFLAGS, NDKLEVEL set...> |
| 123 # |
| 124 # if ARCH == arm |
| 125 # if APP_ABI != armeabi |
| 126 # CFLAGS += -march=armv7-a -mfloat-abi=softfp |
| 127 # CFLAGS += -mfpu=vfpv3-d16 |
| 128 # LDFLAGS += -march=armv7-a -Wl,--fix-cortex-a8 |
| 129 # APP_ABI = armeabi-v7a |
| 130 # else if ARCH == arm64 |
| 131 # APP_ABI = arm64_v8a |
| 132 # else if ARCH == x86 |
| 133 # if USE_ASM |
| 134 # ASMFLAGS += -f elf64 |
| 135 # else |
| 136 # APP_ABI = <ARCH> |
| 137 # |
| 138 # ifndef NDKROOT |
| 139 # <ERROR NDKROOT is not set> |
| 140 # ifndef TARGET |
| 141 # <ERROR TARGET is not set> |
| 142 # |
| 143 # ... |
| 144 |
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