1# Platform defines.
2set(CMAKE_SYSTEM_NAME Linux)
3
4set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS TRUE)
5
6set(CMAKE_CROSSCOMPILING 1)
7
8# dE defines
9set(DE_OS		"DE_OS_ANDROID")
10set(DE_COMPILER	"DE_COMPILER_GCC")
11if (NOT DEFINED DE_ANDROID_API)
12	set(DE_ANDROID_API 5)
13endif ()
14
15# NDK installation path
16set(ANDROID_NDK_PATH	"/opt/android-ndk-r6"	CACHE STRING "Android NDK installation path")
17set(ANDROID_NDK_HOST_OS	"linux-x86"				CACHE STRING "Android ndk host os")
18set(ANDROID_ABI			"armeabi-v7a"			CACHE STRING "Android ABI")
19set(ANDROID_NDK_TARGET	"android-${DE_ANDROID_API}")
20
21# Select cpu
22if (ANDROID_ABI STREQUAL "x86")
23	set(DE_CPU					"DE_CPU_X86")
24	set(CMAKE_SYSTEM_PROCESSOR	i686-android-linux)
25else ()
26	set(DE_CPU					"DE_CPU_ARM")
27	set(CMAKE_SYSTEM_PROCESSOR	arm-linux-androideabi)
28endif ()
29
30# Cross-compiler, search paths and sysroot
31if (ANDROID_ABI STREQUAL "x86")
32	set(ANDROID_CC_PATH	"${ANDROID_NDK_PATH}/toolchains/x86-4.4.3/prebuilt/${ANDROID_NDK_HOST_OS}/")
33	set(CROSS_COMPILE	"${ANDROID_CC_PATH}bin/i686-android-linux-")
34	set(ANDROID_SYSROOT	"${ANDROID_NDK_PATH}/platforms/${ANDROID_NDK_TARGET}/arch-x86")
35
36	set(CMAKE_FIND_ROOT_PATH
37		"${ANDROID_NDK_PATH}/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_ABI}"
38		"${ANDROID_CC_PATH}i686-android-linux"
39		"${ANDROID_CC_PATH}lib/gcc/i686-android-linux/4.4.3"
40		${ANDROID_SYSROOT}
41		)
42
43else ()
44	set(ANDROID_CC_PATH	"${ANDROID_NDK_PATH}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/${ANDROID_NDK_HOST_OS}/")
45	set(CROSS_COMPILE	"${ANDROID_CC_PATH}bin/arm-linux-androideabi-")
46	set(ANDROID_SYSROOT	"${ANDROID_NDK_PATH}/platforms/${ANDROID_NDK_TARGET}/arch-arm")
47
48	set(CMAKE_FIND_ROOT_PATH
49		"${ANDROID_NDK_PATH}/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_ABI}"
50		"${ANDROID_CC_PATH}arm-linux-androideabi"
51		${ANDROID_SYSROOT}
52		)
53
54endif ()
55
56# crtbegin_so.o & crtend_so.o \todo [pyry] Is there some special CMake variable for these?
57if (DE_ANDROID_API GREATER 8)
58	set(CRTBEGIN_SO	"${ANDROID_SYSROOT}/usr/lib/crtbegin_so.o")
59	set(CRTEND_SO	"${ANDROID_SYSROOT}/usr/lib/crtend_so.o")
60endif ()
61
62include(CMakeForceCompiler)
63
64if (ANDROID_NDK_HOST_OS STREQUAL "linux-x86" OR
65	ANDROID_NDK_HOST_OS STREQUAL "darwin-x86")
66	cmake_force_c_compiler("${CROSS_COMPILE}gcc"		GNU)
67	cmake_force_cxx_compiler("${CROSS_COMPILE}g++"		GNU)
68elseif (ANDROID_NDK_HOST_OS STREQUAL "windows")
69	cmake_force_c_compiler("${CROSS_COMPILE}gcc.exe"	GNU)
70	cmake_force_cxx_compiler("${CROSS_COMPILE}g++.exe"	GNU)
71else ()
72	message(FATAL_ERROR "Unknown ANDROID_NDK_HOST_OS")
73endif ()
74
75set(CMAKE_SHARED_LIBRARY_C_FLAGS "")
76set(CMAKE_SHARED_LIBRARY_CXX_FLAGS "")
77
78set(CMAKE_C_CREATE_SHARED_LIBRARY
79  "<CMAKE_C_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
80set(CMAKE_CXX_CREATE_SHARED_LIBRARY
81  "<CMAKE_CXX_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> -o <TARGET> ${CRTBEGIN_SO} <OBJECTS> <LINK_LIBRARIES> ${CRTEND_SO}")
82
83set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
84set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
85set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
86
87set(COMMON_C_FLAGS		"--sysroot=${ANDROID_SYSROOT} -fpic -Os -DANDROID -D__ANDROID__ -D__STDC_INT64__")
88set(COMMON_LINKER_FLAGS	"-nostdlib -Wl,-shared,-Bsymbolic -Wl,--no-undefined")
89set(ARM_C_FLAGS			"-mfloat-abi=softfp -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ ")
90set(ARM_LINKER_FLAGS	"-Wl,--fix-cortex-a")
91
92if (ANDROID_ABI STREQUAL "armeabi-v7a")
93	# For armeabi-v7a
94	set(TARGET_C_FLAGS		"${COMMON_C_FLAGS} ${ARM_C_FLAGS} -march=armv7-a -mfpu=vfp")
95	set(TARGET_LINKER_FLAGS	"${COMMON_LINKER_FLAGS} ${ARM_LINKER_FLAGS}")
96
97elseif (ANDROID_ABI STREQUAL "armeabi")
98	# For armeabi (ARMv5TE)
99	set(TARGET_C_FLAGS		"${COMMON_C_FLAGS} ${ARM_C_FLAGS} -march=armv5te")
100	set(TARGET_LINKER_FLAGS	"${COMMON_LINKER_FLAGS} ${ARM_LINKER_FLAGS}")
101
102elseif (ANDROID_ABI STREQUAL "x86")
103	set(TARGET_C_FLAGS		"${COMMON_C_FLAGS} -march=i686 -msse3 -mstackrealign -mfpmath=sse")
104	set(TARGET_LINKER_FLAGS	"${COMMON_LINKER_FLAGS}")
105
106else ()
107	message(FATAL_ERROR "Unknown Android ABI \"${ANDROID_ABI}\"")
108endif ()
109
110# \note Hacky workaround for flags...
111set(CMAKE_C_FLAGS	"${TARGET_C_FLAGS}" CACHE STRING "" FORCE)
112set(CMAKE_CXX_FLAGS	"${TARGET_C_FLAGS} -I${ANDROID_NDK_PATH}/sources/cxx-stl/gnu-libstdc++/include -I${ANDROID_NDK_PATH}/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_ABI}/include" CACHE STRING "" FORCE)
113set(CMAKE_SHARED_LINKER_FLAGS "${TARGET_LINKER_FLAGS}" CACHE STRING "" FORCE)
114