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LOCAL_PATH:= $(call my-dir)
# We need to build this for both the device (as a shared library)
# and the host (as a static library for tools to use).
common_SRC_FILES := \
png.c \
pngerror.c \
pngget.c \
pngmem.c \
pngpread.c \
pngread.c \
pngrio.c \
pngrtran.c \
pngrutil.c \
pngset.c \
pngtrans.c \
pngwio.c \
pngwrite.c \
pngwtran.c \
pngwutil.c \
# Previously these arm-specific flags were never applied.
# TODO: apply the flags and fix the build.
# my_cflags_arm := -DPNG_ARM_NEON_OPT=2 -DPNG_ARM_NEON_CHECK_SUPPORTED
my_cflags_arm :=
# BUG: http://llvm.org/PR19472 - SLP vectorization (on ARM at least) crashes
# when we can't lower a vectorized bswap.
my_cflags_arm += -fno-slp-vectorize
my_src_files_arm := \
arm/arm_init.c \
arm/filter_neon.S
common_CFLAGS := -std=gnu89 #-fvisibility=hidden ## -fomit-frame-pointer
ifeq ($(HOST_OS),windows)
ifeq ($(USE_MINGW),)
# Case where we're building windows but not under linux (so it must be cygwin)
# In this case, gcc cygwin doesn't recognize -fvisibility=hidden
$(info libpng: Ignoring gcc flag $(common_CFLAGS) on Cygwin)
common_CFLAGS :=
endif
endif
common_C_INCLUDES +=
common_COPY_HEADERS_TO := libpng
common_COPY_HEADERS := png.h pngconf.h pngusr.h
# For the host
# =====================================================
include $(CLEAR_VARS)
LOCAL_SRC_FILES := $(common_SRC_FILES)
LOCAL_CFLAGS += $(common_CFLAGS)
LOCAL_C_INCLUDES += $(common_C_INCLUDES) external/zlib
LOCAL_MODULE:= libpng
LOCAL_COPY_HEADERS_TO := $(common_COPY_HEADERS_TO)
LOCAL_COPY_HEADERS := $(common_COPY_HEADERS)
include $(BUILD_HOST_STATIC_LIBRARY)
# For the device (static)
# =====================================================
include $(CLEAR_VARS)
LOCAL_CLANG := true
LOCAL_SRC_FILES := $(common_SRC_FILES)
LOCAL_CFLAGS += $(common_CFLAGS) -ftrapv
LOCAL_CFLAGS_arm := $(my_cflags_arm)
LOCAL_SRC_FILES_arm := $(my_src_files_arm)
LOCAL_C_INCLUDES += $(common_C_INCLUDES) \
external/zlib
LOCAL_SHARED_LIBRARIES := \
libz
LOCAL_MODULE:= libpng
include $(BUILD_STATIC_LIBRARY)
# For the device (shared)
# =====================================================
include $(CLEAR_VARS)
LOCAL_CLANG := true
LOCAL_SRC_FILES := $(common_SRC_FILES)
LOCAL_CFLAGS += $(common_CFLAGS) -ftrapv
LOCAL_CFLAGS_arm := $(my_cflags_arm)
LOCAL_SRC_FILES_arm := $(my_src_files_arm)
LOCAL_C_INCLUDES += $(common_C_INCLUDES) \
external/zlib
LOCAL_SHARED_LIBRARIES := \
libz
LOCAL_MODULE:= libpng
LOCAL_COPY_HEADERS_TO := $(common_COPY_HEADERS_TO)
LOCAL_COPY_HEADERS := $(common_COPY_HEADERS)
include $(BUILD_SHARED_LIBRARY)
# For testing
# =====================================================
include $(CLEAR_VARS)
LOCAL_CLANG := true
LOCAL_C_INCLUDES:= $(common_C_INCLUDES) external/zlib
LOCAL_SRC_FILES:= pngtest.c
LOCAL_MODULE := pngtest
LOCAL_SHARED_LIBRARIES:= libpng libz
LOCAL_MODULE_TAGS := debug
include $(BUILD_EXECUTABLE)
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