Index: third_party/openh264/buildnotes.txt |
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+# Notes, just me trying to understand the .mk files with pseudocode... |
+# Probably the main thing about building asm is making sure the -D defines are |
+# set for each platform, and maybe -fPIC, etc compiler options are essential. |
+ |
+# --------- arch.mk --------- |
+# if ARCH == *86 || ARCH == x86_64 |
+# x86-common.mk |
+# if ARCH == arm* && ARCH != arm64 && USE_ASM |
+# ASM_ARCH = arm |
+# ASM_FLAGS += codec/common/arm |
+# CFLAGS += -DHAVE_NEON |
+# if ARCH == arm64 || aarch64 |
+# ASM_ARCH = arm64 |
+# ASMFLAGS += codec/common/arm64 |
+# CFLAGS += -DHAVE_NEON_AARCH64 |
+ |
+# --------- x86-common.mk --------- |
+# CFLAGS_M32 = -m32 |
+# CFLAGS_M64 = -m64 |
+# ASM_INCLUDES = codec/common/x86 |
+# if ENABLE64BIT |
+# ARCH = x86_64 |
+# else |
+# ARCH = x86 |
+# if ARCH == x86_64 |
+# CFLAGS += -m64 |
+# LDFLAGS += -m64 |
+# ASMFLAGS_PLATFORM = -DUNIX64 |
+# else |
+# CFLAGS += -m32 |
+# LDFLAGS += -m32 |
+# ASMFLAGS_PLATFORM = -DX86_32 |
+# if USE_ASM |
+# CFLAGS += -DX86_ASM |
+# if ARCH != x86_64 |
+# CFLAGS += -DX86_32_ASM |
+# ASM_ARCH = x86 |
+# ASM = nasm |
+# ASMFLAGS += <ASMFLAGS_PLATFORM> |
+ |
+# --------- platform-linux.mk --------- |
+# include arch.mk |
+# |
+# <SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, SHLDFLAGS, AR_OPTS set...> |
+# |
+# CFLAGS += -Wall -fno-strict-aliasing -fPIC -MMD -MP |
+# if ASM_ARCH == x86 |
+# if ARCH == x86_64 |
+# ASMFLAGS += -f elf64 |
+# else |
+# ASMFLAGS += -f elf |
+# if ASM_ARCH == arm |
+# ASMFLAGS += -march=armv7-a -mfpu=neon |
+# |
+# if CXX == clang++ |
+# CXXFLAGS += -Wc++11-compat-reserved-user-defined-literal |
+ |
+# --------- platform-bsd.mk --------- |
+# ... |
+# do we care about this? there's platform-darwin.mk as well for mac |
+ |
+# --------- platform-darwin.mk --------- |
+# include arch.mk |
+# |
+# <SHAREDLIB_DIR, SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, SHLDFLAGS, SHARED set...> |
+# |
+# CFLAGS += -Wall -fPIC -MMD -MP |
+# LDFLAGS += -lpthread |
+# if ASM_ARCH == x86 |
+# ASMFLAGS += -DPREFIX |
+# if ARCH == x86_64 |
+# ASMFLAGS += -f macho64 |
+# else |
+# ASMFLAGS += -f macho |
+# LDFLAGS += -read_only_relocs suppress |
+ |
+# --------- platform-ios.mk --------- |
+# ARCH = armv7 |
+# include platform-darwin-mk |
+# CXX = clang++ |
+# CC clang |
+# if ARCH == *86 || ARCH == x86_64 |
+# SDKTYPE = iPhoneSimulator |
+# else |
+# SDKTYPE = iPhoneOS |
+# SDK = <... shell command for sdk version ...> |
+# SDK_MIN = 5.1 |
+# |
+# <XCODE, SDKROOT set...> |
+# |
+# CFLAGS += <...> |
+# LDFLAGS += <...> |
+ |
+# --------- platform-msvc.mk --------- |
+# --------- platform-msvc-app.mk --------- |
+# --------- platform-msvc-wp.mk --------- |
+# Visual Studio builds (win and win phone), don't care about these? |
+# - Actually Visual Studio is used to build win, not mingw? Care! |
+ |
+# --------- platform-mingw_nt.mk --------- |
+# i.e. Windows when not building with Visual Studio? |
+# include x86-common.mk |
+# |
+# <SHAREDLIB_DIR, SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, EXTRA_LIBRARY, SHLDFLAGS set...> |
+# |
+# CFLAGS += -MMD -MP |
+# LDFLAGS += # empty line wtf? |
+# if ARCH == x86_64 |
+# ASMFLAGS += -f win64 |
+# ASMFLAGS_PLATFORM = -DWIN64 |
+# CC = x86_64-w64-mingw32-gcc |
+# CXX = x86_64-w64-mingw32-g++ |
+# AR = x86_64-w64-mingw32-ar |
+# else |
+# ASMFLAGS += -f win32 -DPREFIX |
+# EXEEXT = .exe |
+ |
+# --------- platform-android.mk --------- |
+# ARCH = arm |
+# include arch.mk |
+# |
+# <SHAREDLIBSUFFIX, SHAREDLIBSUFFIXVER, SHLDFLAGS, NDKLEVEL set...> |
+# |
+# if ARCH == arm |
+# if APP_ABI != armeabi |
+# CFLAGS += -march=armv7-a -mfloat-abi=softfp |
+# CFLAGS += -mfpu=vfpv3-d16 |
+# LDFLAGS += -march=armv7-a -Wl,--fix-cortex-a8 |
+# APP_ABI = armeabi-v7a |
+# else if ARCH == arm64 |
+# APP_ABI = arm64_v8a |
+# else if ARCH == x86 |
+# if USE_ASM |
+# ASMFLAGS += -f elf64 |
+# else |
+# APP_ABI = <ARCH> |
+# |
+# ifndef NDKROOT |
+# <ERROR NDKROOT is not set> |
+# ifndef TARGET |
+# <ERROR TARGET is not set> |
+# |
+# ... |
+ |