Android.mk

   1 #
   2 # Copyright (C) 2019 The Android-x86 Open Source Project
   3 #
   4 # Licensed under the standard MIT license.
   5 # See the COPYRIGHT in the same directory.
   6 #
   7
   8 LOCAL_PATH := $(call my-dir)
   9
  10 include $(CLEAR_VARS)
  11
  12 LOCAL_MODULE := libc-musl
  13 LOCAL_MULTILIB := first
  14 LOCAL_VENDOR_MODULE := true
  15 LOCAL_MODULE_CLASS := SHARED_LIBRARIES
  16
  17 MUSL_ARCH := $(TARGET_ARCH)
  18 MUSL_SRC_DIRS := $(addprefix $(LOCAL_PATH)/,src/* ldso)
  19 MUSL_BASE_SRCS := $(sort $(wildcard $(addsuffix /*.c,$(MUSL_SRC_DIRS))))
  20 MUSL_ARCH_SRCS := $(sort $(wildcard $(addsuffix /$(MUSL_ARCH)/*.[csS],$(MUSL_SRC_DIRS))))
  21 MUSL_REPLACED_SRCS = $(addsuffix .c,$(subst $(MUSL_ARCH)/,,$(basename $(MUSL_ARCH_SRCS))))
  22
  23 LOCAL_SRC_FILES := $(subst $(LOCAL_PATH)/,,$(filter-out $(MUSL_REPLACED_SRCS),$(MUSL_BASE_SRCS)) $(MUSL_ARCH_SRCS))
  24
  25 LOCAL_C_INCLUDES := $(addprefix $(LOCAL_PATH)/, \
  26         arch/$(MUSL_ARCH) \
  27         arch/generic \
  28         src/include \
  29         src/internal \
  30         include) \
  31
  32 LOCAL_CFLAGS := -std=c99 -nostdinc \
  33         -ffreestanding -fexcess-precision=standard -frounding-math \
  34         -Wa,--noexecstack -D_XOPEN_SOURCE=700 -fomit-frame-pointer \
  35         -fno-unwind-tables -fno-asynchronous-unwind-tables \
  36         -ffunction-sections -fdata-sections \
  37         -Werror=implicit-function-declaration -Werror=implicit-int \
  38         -Werror=pointer-sign -Werror=pointer-arith \
  39         -Os -pipe \
  40
  41 intermediates := $(call local-generated-sources-dir)
  42
  43 LOCAL_GENERATED_SOURCES := \
  44         $(intermediates)/bits/alltypes.h \
  45         $(intermediates)/bits/syscall.h \
  46         $(intermediates)/version.h
  47
  48 $(intermediates)/bits/alltypes.h: $(LOCAL_PATH)/tools/mkalltypes.sed $(LOCAL_PATH)/arch/$(MUSL_ARCH)/bits/alltypes.h.in $(LOCAL_PATH)/include/alltypes.h.in
  49         sed -f $^ > $@
  50
  51 $(intermediates)/bits/syscall.h: $(LOCAL_PATH)/arch/$(MUSL_ARCH)/bits/syscall.h.in | $(ACP)
  52         $(ACP) $< $@
  53         sed -n -e s/__NR_/SYS_/p < $< >> $@
  54
  55 $(intermediates)/version.h: $(wildcard $(LOCAL_PATH)/VERSION $(LOCAL_PATH)/.git)
  56         echo "#define VERSION \"$$(cd $(<D); sh tools/version.sh)\"" > $@
  57
  58 LOCAL_CXX_STL := none
  59 LOCAL_SANITIZE := never
  60 LOCAL_SYSTEM_SHARED_LIBRARIES :=
  61 LOCAL_NO_CRT := true
  62 LOCAL_NO_DEFAULT_COMPILER_FLAGS := true
  63 LOCAL_NO_LIBCOMPILER_RT := true
  64 LOCAL_NO_STANDARD_LIBRARIES := true
  65 LOCAL_LDFLAGS := \
  66         -Wl,--sort-common \
  67         -Wl,--gc-sections \
  68         -Wl,--hash-style=both \
  69         -Wl,--no-undefined \
  70         -Wl,--exclude-libs=ALL \
  71         -Wl,--dynamic-list=$(LOCAL_PATH)/dynamic.list \
  72         -Wl,-e,_dlstart -v
  73
  74 include $(BUILD_SHARED_LIBRARY)