cxx_stl_setup.mk revision b5eb905729d67764e97f8f7042e35e29b9b68972 
1#############################################################
2## Set up flags based on LOCAL_CXX_STL.
3## Input variables: LOCAL_CXX_STL
4## Output variables: My_cflags, my_c_includes, my_shared_libraries, etc.
5#############################################################
6
7# Select the appropriate C++ STL
8ifeq ($(strip $(LOCAL_CXX_STL)),default)
9    ifndef LOCAL_SDK_VERSION
10        # Platform code. Select the appropriate STL.
11        ifndef USE_MINGW
12            my_cxx_stl := libc++
13            ifdef LOCAL_IS_HOST_MODULE
14                ifneq (,$(BUILD_HOST_static))
15                    my_cxx_stl := libc++_static
16                endif
17            endif
18        else
19            # libc++ is not supported on mingw.
20            my_cxx_stl := libstdc++
21        endif
22    else
23        my_cxx_stl := ndk
24    endif
25else
26    my_cxx_stl := $(strip $(LOCAL_CXX_STL))
27endif
28
29# Yes, this is actually what the clang driver does.
30HOST_dynamic_gcclibs := -lgcc_s -lgcc -lc -lgcc_s -lgcc
31HOST_static_gcclibs := -Wl,--start-group -lgcc -lgcc_eh -lc -Wl,--end-group
32
33my_link_type := dynamic
34ifdef LOCAL_IS_HOST_MODULE
35    ifneq (,$(BUILD_HOST_static))
36        my_link_type := static
37    endif
38    ifeq (-static,$(filter -static,$(my_ldflags)))
39        my_link_type := static
40    endif
41else
42    ifeq (true,$(LOCAL_FORCE_STATIC_EXECUTABLE))
43        my_link_type := static
44    endif
45endif
46
47ifneq ($(filter $(my_cxx_stl),libc++ libc++_static),)
48    my_cflags += -D_USING_LIBCXX
49    my_c_includes += external/libcxx/include
50    ifeq ($(my_cxx_stl),libc++)
51        my_shared_libraries += libc++
52    else
53        my_static_libraries += libc++_static
54    endif
55
56    ifdef LOCAL_IS_HOST_MODULE
57        my_cppflags += -nostdinc++
58        my_ldflags += -nodefaultlibs
59        my_ldlibs += -lpthread -lm
60        my_ldlibs += $($(my_prefix)$(my_link_type)_gcclibs)
61    endif
62else ifneq ($(filter $(my_cxx_stl),stlport stlport_static),)
63    ifndef LOCAL_IS_HOST_MODULE
64        my_c_includes += external/stlport/stlport bionic/libstdc++/include \
65                         bionic
66        ifeq ($(my_cxx_stl),stlport)
67            my_shared_libraries += libstdc++ libstlport
68        else
69            my_static_libraries += libstdc++ libstlport_static
70        endif
71    endif
72else ifeq ($(my_cxx_stl),ndk)
73    # Using an NDK STL. Handled farther up in this file.
74    ifndef LOCAL_IS_HOST_MODULE
75        my_system_shared_libraries += libstdc++
76    endif
77else ifeq ($(my_cxx_stl),libstdc++)
78    # Using bionic's basic libstdc++. Not actually an STL. Only around until the
79    # tree is in good enough shape to not need it.
80    ifndef LOCAL_IS_HOST_MODULE
81        my_c_includes += bionic/libstdc++/include
82        my_system_shared_libraries += libstdc++
83    endif
84    # Host builds will use GNU libstdc++.
85else ifeq ($(my_cxx_stl),none)
86    ifdef LOCAL_IS_HOST_MODULE
87        my_cppflags += -nostdinc++
88        my_ldflags += -nodefaultlibs
89        my_ldlibs += $($(my_prefix)$(my_link_type)_gcclibs)
90    endif
91else
92    $(error $(my_cxx_stl) is not a supported STL.)
93endif
94