1# Google Android makefile for curl and libcurl 2# 3# Place the curl source (including this makefile) into external/curl/ in the 4# Android source tree. Then build them with 'make curl' or just 'make libcurl' 5# from the Android root. Tested with Android versions 1.5, 2.1-2.3 6# 7# Note: you must first create a curl_config.h file by running configure in the 8# Android environment. The only way I've found to do this is tricky. Perform a 9# normal Android build with libcurl in the source tree, providing the target 10# "showcommands" to make. The build will eventually fail (because curl_config.h 11# doesn't exist yet), but the compiler commands used to build curl will be 12# shown. Now, from the external/curl/ directory, run curl's normal configure 13# command with flags that match what Android itself uses. This will mean 14# putting the compiler directory into the PATH, putting the -I, -isystem and 15# -D options into CPPFLAGS, putting the -W, -m, -f, -O and -nostdlib options 16# into CFLAGS, and putting the -Wl, -L and -l options into LIBS, along with the 17# path to the files libgcc.a, crtbegin_dynamic.o, and ccrtend_android.o. 18# Remember that the paths must be absolute since you will not be running 19# configure from the same directory as the Android make. The normal 20# cross-compiler options must also be set. Note that the -c, -o, -MD and 21# similar flags must not be set. 22# 23# To see all the LIBS options, you'll need to do the "showcommands" trick on an 24# executable that's already buildable and watch what flags Android uses to link 25# it (dhcpcd is a good choice to watch). You'll also want to add -L options to 26# LIBS that point to the out/.../obj/lib/ and out/.../obj/system/lib/ 27# directories so that additional libraries can be found and used by curl. 28# 29# The end result will be a configure command that looks something like this 30# (the environment variable A is set to the Android root path which makes the 31# command shorter): 32# 33# A=`realpath ../..` && \ 34# PATH="$A/prebuilt/linux-x86/toolchain/arm-eabi-X/bin:$PATH" \ 35# ./configure --host=arm-linux CC=arm-eabi-gcc \ 36# CPPFLAGS="-I $A/system/core/include ..." \ 37# CFLAGS="-nostdlib -fno-exceptions -Wno-multichar ..." \ 38# LIBS="$A/prebuilt/linux-x86/toolchain/arm-eabi-X/lib/gcc/arm-eabi/X\ 39# /interwork/libgcc.a ..." 40# 41# Finally, copy the file COPYING to NOTICE so that the curl license gets put 42# into the right place (but see the note about this below). 43# 44# Dan Fandrich 45# November 2011 46 47LOCAL_PATH:= $(call my-dir) 48 49common_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 50 51######################### 52# Build the libcurl library 53 54include $(CLEAR_VARS) 55include $(LOCAL_PATH)/lib/Makefile.inc 56CURL_HEADERS := \ 57 curlbuild.h \ 58 curl.h \ 59 curlrules.h \ 60 curlver.h \ 61 easy.h \ 62 mprintf.h \ 63 multi.h \ 64 stdcheaders.h \ 65 typecheck-gcc.h 66 67LOCAL_SRC_FILES := $(addprefix lib/,$(CSOURCES)) 68LOCAL_C_INCLUDES += $(LOCAL_PATH)/include/ 69LOCAL_CFLAGS += $(common_CFLAGS) 70 71LOCAL_COPY_HEADERS_TO := libcurl/curl 72LOCAL_COPY_HEADERS := $(addprefix include/curl/,$(CURL_HEADERS)) 73 74LOCAL_MODULE:= libcurl 75LOCAL_MODULE_TAGS := optional 76 77# Copy the licence to a place where Android will find it. 78# Actually, this doesn't quite work because the build system searches 79# for NOTICE files before it gets to this point, so it will only be seen 80# on subsequent builds. 81ALL_PREBUILT += $(LOCAL_PATH)/NOTICE 82$(LOCAL_PATH)/NOTICE: $(LOCAL_PATH)/COPYING | $(ACP) 83 $(copy-file-to-target) 84 85include $(BUILD_STATIC_LIBRARY) 86 87 88######################### 89# Build the curl binary 90 91include $(CLEAR_VARS) 92include $(LOCAL_PATH)/src/Makefile.inc 93LOCAL_SRC_FILES := $(addprefix src/,$(CURL_CFILES)) 94 95LOCAL_MODULE := curl 96LOCAL_MODULE_TAGS := optional 97LOCAL_STATIC_LIBRARIES := libcurl 98LOCAL_SYSTEM_SHARED_LIBRARIES := libc 99 100LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/lib 101 102# This may also need to include $(CURLX_ONES) in order to correctly link 103# if libcurl is changed to be built as a dynamic library 104LOCAL_CFLAGS += $(common_CFLAGS) 105 106include $(BUILD_EXECUTABLE) 107 108