1 # Google Android makefile for curl and libcurl
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
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
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.
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.
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
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 ..."
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).
52 LOCAL_PATH:= $(call my-dir)/../..
54 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
56 #########################
57 # Build the libcurl library
60 include $(LOCAL_PATH)/lib/Makefile.inc
71 LOCAL_SRC_FILES := $(addprefix lib/,$(CSOURCES))
72 LOCAL_C_INCLUDES += $(LOCAL_PATH)/include/
73 LOCAL_CFLAGS += $(common_CFLAGS)
75 LOCAL_COPY_HEADERS_TO := libcurl/curl
76 LOCAL_COPY_HEADERS := $(addprefix include/curl/,$(CURL_HEADERS))
78 LOCAL_MODULE:= libcurl
79 LOCAL_MODULE_TAGS := optional
81 # Copy the licence to a place where Android will find it.
82 # Actually, this doesn't quite work because the build system searches
83 # for NOTICE files before it gets to this point, so it will only be seen
84 # on subsequent builds.
85 ALL_PREBUILT += $(LOCAL_PATH)/NOTICE
86 $(LOCAL_PATH)/NOTICE: $(LOCAL_PATH)/COPYING | $(ACP)
87 $(copy-file-to-target)
89 include $(BUILD_STATIC_LIBRARY)
92 #########################
93 # Build the curl binary
96 include $(LOCAL_PATH)/src/Makefile.inc
97 LOCAL_SRC_FILES := $(addprefix src/,$(CURL_CFILES))
100 LOCAL_MODULE_TAGS := optional
101 LOCAL_STATIC_LIBRARIES := libcurl
102 LOCAL_SYSTEM_SHARED_LIBRARIES := libc
104 LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/lib
106 # This may also need to include $(CURLX_CFILES) in order to correctly link
107 # if libcurl is changed to be built as a dynamic library
108 LOCAL_CFLAGS += $(common_CFLAGS)
110 include $(BUILD_EXECUTABLE)