1# Google Android makefile for curl and libcurl 2# 3# This file can be used when building curl using the full Android source 4# release or the NDK. Most users do not want or need to do this; please 5# instead read the Android section in docs/INSTALL for alternate 6# methods. 7# 8# Place the curl source (including this makefile) into external/curl/ in the 9# Android source tree. Then build them with 'make curl' or just 'make libcurl' 10# from the Android root. Tested with Android versions 1.5, 2.1-2.3 11# 12# Note: you must first create a curl_config.h file by running configure in the 13# Android environment. The only way I've found to do this is tricky. Perform a 14# normal Android build with libcurl in the source tree, providing the target 15# "showcommands" to make. The build will eventually fail (because curl_config.h 16# doesn't exist yet), but the compiler commands used to build curl will be 17# shown. Now, from the external/curl/ directory, run curl's normal configure 18# command with flags that match what Android itself uses. This will mean 19# putting the compiler directory into the PATH, putting the -I, -isystem and 20# -D options into CPPFLAGS, putting the -W, -m, -f, -O and -nostdlib options 21# into CFLAGS, and putting the -Wl, -L and -l options into LIBS, along with the 22# path to the files libgcc.a, crtbegin_dynamic.o, and ccrtend_android.o. 23# Remember that the paths must be absolute since you will not be running 24# configure from the same directory as the Android make. The normal 25# cross-compiler options must also be set. Note that the -c, -o, -MD and 26# similar flags must not be set. 27# 28# To see all the LIBS options, you'll need to do the "showcommands" trick on an 29# executable that's already buildable and watch what flags Android uses to link 30# it (dhcpcd is a good choice to watch). You'll also want to add -L options to 31# LIBS that point to the out/.../obj/lib/ and out/.../obj/system/lib/ 32# directories so that additional libraries can be found and used by curl. 33# 34# The end result will be a configure command that looks something like this 35# (the environment variable A is set to the Android root path which makes the 36# command shorter): 37# 38# A=`realpath ../..` && \ 39# PATH="$A/prebuilt/linux-x86/toolchain/arm-eabi-X/bin:$PATH" \ 40# ./configure --host=arm-linux CC=arm-eabi-gcc \ 41# CPPFLAGS="-I $A/system/core/include ..." \ 42# CFLAGS="-nostdlib -fno-exceptions -Wno-multichar ..." \ 43# LIBS="$A/prebuilt/linux-x86/toolchain/arm-eabi-X/lib/gcc/arm-eabi/X\ 44# /interwork/libgcc.a ..." 45# 46# Finally, copy the file COPYING to NOTICE so that the curl license gets put 47# into the right place (but see the note about this below). 48# 49# Dan Fandrich 50# November 2011 51 52LOCAL_PATH:= $(call my-dir)/../.. 53 54common_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 55 56######################### 57# Build the libcurl library 58 59include $(CLEAR_VARS) 60include $(LOCAL_PATH)/lib/Makefile.inc 61CURL_HEADERS := \ 62 curlbuild.h \ 63 curl.h \ 64 curlrules.h \ 65 curlver.h \ 66 easy.h \ 67 mprintf.h \ 68 multi.h \ 69 stdcheaders.h \ 70 typecheck-gcc.h 71 72LOCAL_SRC_FILES := $(addprefix lib/,$(CSOURCES)) 73LOCAL_C_INCLUDES += $(LOCAL_PATH)/include/ 74LOCAL_CFLAGS += $(common_CFLAGS) 75 76LOCAL_COPY_HEADERS_TO := libcurl/curl 77LOCAL_COPY_HEADERS := $(addprefix include/curl/,$(CURL_HEADERS)) 78 79LOCAL_MODULE:= libcurl 80LOCAL_MODULE_TAGS := optional 81 82# Copy the licence to a place where Android will find it. 83# Actually, this doesn't quite work because the build system searches 84# for NOTICE files before it gets to this point, so it will only be seen 85# on subsequent builds. 86ALL_PREBUILT += $(LOCAL_PATH)/NOTICE 87$(LOCAL_PATH)/NOTICE: $(LOCAL_PATH)/COPYING | $(ACP) 88 $(copy-file-to-target) 89 90include $(BUILD_STATIC_LIBRARY) 91 92 93######################### 94# Build the curl binary 95 96include $(CLEAR_VARS) 97include $(LOCAL_PATH)/src/Makefile.inc 98LOCAL_SRC_FILES := $(addprefix src/,$(CURL_CFILES)) 99 100LOCAL_MODULE := curl 101LOCAL_MODULE_TAGS := optional 102LOCAL_STATIC_LIBRARIES := libcurl 103LOCAL_SYSTEM_SHARED_LIBRARIES := libc 104 105LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/lib 106 107# This may also need to include $(CURLX_CFILES) in order to correctly link 108# if libcurl is changed to be built as a dynamic library 109LOCAL_CFLAGS += $(common_CFLAGS) 110 111include $(BUILD_EXECUTABLE) 112 113