Add Android.mk file

1 files changed, 76 insertions, 0 deletions

diff --git a/Android.mk b/Android.mk
new file mode 100644
index 00000000..5be03b8f
--- /dev/null
+++ b/Android.mk
@@ -0,0 +1,76 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+# By default, the build system generates ARM target binaries in thumb mode,
+# where each instruction is 16 bits wide.  Defining this variable as arm
+# forces the build system to generate object files in 32-bit arm mode.  This
+# is the same setting previously used by libjpeg.
+# TODO (msarett): Run performance tests to determine whether arm mode is still
+#                 preferred to thumb mode for libjpeg-turbo.
+LOCAL_ARM_MODE := arm
+
+# BUG:25564571
+# Clang fails to compile the ARM v8 NEON asembly, and libjpeg-turbo may perform
+# better when compiled with gcc.
+LOCAL_CLANG := false
+
+LOCAL_SRC_FILES := \
+    jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
+    jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
+    jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
+    jdatadst.c jdatasrc.c jdcoefct.c  jdcolor.c jddctmgr.c jdhuff.c \
+    jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
+    jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
+    jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jmemmgr.c \
+    jmemnobs.c jquant1.c jquant2.c jutils.c
+
+# ARM v7 NEON
+LOCAL_SRC_FILES_arm += simd/jsimd_arm_neon.S simd/jsimd_arm.c
+
+# If we are certain that the ARM v7 device has NEON (and there is no need for
+# a runtime check), we can indicate that with a flag.
+ifeq ($(strip $(TARGET_ARCH)),arm)
+  ifeq ($(ARCH_ARM_HAVE_NEON),true)
+    LOCAL_CFLAGS += -D__ARM_HAVE_NEON__
+  endif
+endif
+
+# ARM v8 64-bit NEON
+LOCAL_SRC_FILES_arm64 += simd/jsimd_arm64_neon.S simd/jsimd_arm64.c
+
+# TODO (msarett): x86 and x86_64 SIMD.  Cross-compiling these assembly files
+#                 on Linux for Android is very tricky.  This will require a
+#                 YASM or NASM as a dependency.
+LOCAL_SRC_FILES_x86 += jsimd_none.c
+LOCAL_SRC_FILES_x86_64 += jsimd_none.c
+
+# TODO (msarett): MIPS SIMD.  This is available in upstream libjpeg-turbo,
+#                 but has not been cherry picked into the version used by
+#                 Android.
+LOCAL_SRC_FILES_mips += jsimd_none.c
+LOCAL_SRC_FILES_mips64 += jsimd_none.c
+
+LOCAL_CFLAGS += -O3 -fstrict-aliasing
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
+
+ifneq (,$(TARGET_BUILD_APPS))
+  # Unbundled branch, built against NDK.
+  LOCAL_SDK_VERSION := 17
+endif
+
+# Build as a static library.
+LOCAL_MODULE := libjpeg-turbo_static
+include $(BUILD_STATIC_LIBRARY)
+
+# Also build as a shared library.
+include $(CLEAR_VARS)
+
+ifneq (,$(TARGET_BUILD_APPS))
+  # Unbundled branch, built against NDK.
+  LOCAL_SDK_VERSION := 17
+endif
+
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
+LOCAL_WHOLE_STATIC_LIBRARIES = libjpeg-turbo_static
+LOCAL_MODULE := libjpeg-turbo
+include $(BUILD_SHARED_LIBRARY)