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# Google Android makefile for curl and libcurl
#
# Place the curl source (including this makefile) into external/curl/ in the
# Android source tree. Then build them with 'make curl' or just 'make libcurl'
# from the Android root. Tested with Android 1.5 and 2.1
#
# Note: you must first create a curl_config.h file by running configure in the
# Android environment. The only way I've found to do this is tricky. Perform a
# normal Android build with libcurl in the source tree, providing the target
# "showcommands" to make. The build will eventually fail (because curl_config.h
# doesn't exist yet), but the compiler commands used to build curl will be
# shown. Now, from the external/curl/ directory, run curl's normal configure
# command with flags that match what Android itself uses. This will mean
# putting the compiler directory into the PATH, putting the -I, -isystem and
# -D options into CPPFLAGS, putting the -W, -m, -f, -O and -nostdlib options
# into CFLAGS, and putting the -Wl, -L and -l options into LIBS, along with the
# path to the files libgcc.a, crtbegin_dynamic.o, and ccrtend_android.o.
# Remember that the paths must be absolute since you will not be running
# configure from the same directory as the Android make. The normal
# cross-compiler options must also be set. Note that the -c, -o, -MD and
# similar flags must not be set.
#
# To see all the LIBS options, you'll need to do the "showcommands" trick on an
# executable that's already buildable and watch what flags Android uses to link
# it (dhcpcd is a good choice to watch). You'll also want to add -L options to
# LIBS that point to the out/.../obj/lib/ and out/.../obj/system/lib/
# directories so that additional libraries can be found and used by curl.
#
# The end result will be a configure command that looks something like this
# (the environment variable A is set to the Android root path which makes the
# command shorter):
#
# A=`realpath ../..` && \
# PATH="$A/prebuilt/linux-x86/toolchain/arm-eabi-X/bin:$PATH" \
# ./configure --host=arm-linux CC=arm-eabi-gcc \
# CPPFLAGS="-I $A/system/core/include ..." \
# CFLAGS="-nostdlib -fno-exceptions -Wno-multichar ..." \
# LIBS="$A/prebuilt/linux-x86/toolchain/arm-eabi-X/lib/gcc/arm-eabi/X\
# /interwork/libgcc.a ..."
#
# Finally, copy the file COPYING to NOTICE so that the curl license gets put
# into the right place (but see the note about this below).
#
# Dan Fandrich
# August 2010
LOCAL_PATH:= $(call my-dir)
common_CFLAGS := -Wpointer-arith -Wwrite-strings -Wunused -Winline -Wnested-externs -Wmissing-declarations -Wmissing-prototypes -Wno-long-long -Wfloat-equal -Wno-multichar -Wsign-compare -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wno-system-headers -DHAVE_CONFIG_H
#########################
# Build the libcurl library
include $(CLEAR_VARS)
include $(LOCAL_PATH)/lib/Makefile.inc
CURL_HEADERS := \
curlbuild.h \
curl.h \
curlrules.h \
curlver.h \
easy.h \
mprintf.h \
multi.h \
stdcheaders.h \
typecheck-gcc.h
LOCAL_SRC_FILES := $(addprefix lib/,$(CSOURCES))
LOCAL_C_INCLUDES += $(LOCAL_PATH)/include/
LOCAL_CFLAGS += $(common_CFLAGS)
LOCAL_COPY_HEADERS_TO := libcurl/curl
LOCAL_COPY_HEADERS := $(addprefix include/curl/,$(CURL_HEADERS))
LOCAL_MODULE:= libcurl
LOCAL_MODULE_TAGS := optional
# Copy the licence to a place where Android will find it.
# Actually, this doesn't quite work because the build system searches
# for NOTICE files before it gets to this point, so it will only be seen
# on subsequent builds.
ALL_PREBUILT += $(LOCAL_PATH)/NOTICE
$(LOCAL_PATH)/NOTICE: $(LOCAL_PATH)/COPYING | $(ACP)
$(copy-file-to-target)
include $(BUILD_STATIC_LIBRARY)
#########################
# Build the curl binary
include $(CLEAR_VARS)
include $(LOCAL_PATH)/src/Makefile.inc
LOCAL_SRC_FILES := $(addprefix src/,$(CURL_CFILES))
LOCAL_MODULE := curl
LOCAL_MODULE_TAGS := optional
LOCAL_STATIC_LIBRARIES := libcurl
LOCAL_SYSTEM_SHARED_LIBRARIES := libc
LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/lib
# This may also need to include $(CURLX_ONES) in order to correctly link
# if libcurl is changed to be built as a dynamic library
LOCAL_CFLAGS += $(common_CFLAGS)
include $(BUILD_EXECUTABLE)
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