summaryrefslogtreecommitdiffstats
path: root/cmake/QtBaseConfigureTests.cmake
blob: 0844c8df203b8cc26fb181409451643e1250e7d7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
include(CheckCXXSourceCompiles)

function(qt_run_config_test_architecture)
    set(QT_BASE_CONFIGURE_TESTS_VARS_TO_EXPORT
        "" CACHE INTERNAL "Test variables that should be exported" FORCE)

    # Compile test to find the target architecture and sub-architectures.
    set(flags "")
    qt_get_platform_try_compile_vars(platform_try_compile_vars)
    list(APPEND flags ${platform_try_compile_vars})

    try_compile(
        _arch_result
        "${CMAKE_CURRENT_BINARY_DIR}/config.tests/arch"
        "${CMAKE_CURRENT_SOURCE_DIR}/config.tests/arch"
        arch
        CMAKE_FLAGS ${flags}
        )

    if (NOT _arch_result)
        message(FATAL_ERROR "Failed to compile architecture detection file.")
    endif()

    set(_arch_file_suffix "${CMAKE_EXECUTABLE_SUFFIX}")
    # With emscripten the application entry point is a .js file (to be run with node for example),
    # but the real "data" is in the .wasm file, so that's where we need to look for the ABI, etc.
    # information.
    if (EMSCRIPTEN)
        set(_arch_file_suffix ".wasm")
    endif()

    set(arch_test_location "config.tests/arch")
    if(QT_MULTI_CONFIG_FIRST_CONFIG)
        string(APPEND arch_test_location "/${QT_MULTI_CONFIG_FIRST_CONFIG}")
    endif()

    set(_arch_file
        "${CMAKE_CURRENT_BINARY_DIR}/${arch_test_location}/architecture_test${_arch_file_suffix}")
    if (NOT EXISTS "${_arch_file}")
        message(FATAL_ERROR
                "Failed to find compiled architecture detection executable at ${_arch_file}.")
    endif()
    message(STATUS "Extracting architecture info from ${_arch_file}.")

    file(STRINGS "${_arch_file}" _arch_lines LENGTH_MINIMUM 16 LENGTH_MAXIMUM 1024 ENCODING UTF-8)

    foreach (_line ${_arch_lines})
        string(LENGTH "${_line}" lineLength)
        string(FIND "${_line}" "==Qt=magic=Qt== Architecture:" _pos)
        if (_pos GREATER -1)
            math(EXPR _pos "${_pos}+29")
            string(SUBSTRING "${_line}" ${_pos} -1 _architecture)
        endif()
        string(FIND "${_line}" "==Qt=magic=Qt== Sub-architecture:" _pos)
        if (_pos GREATER -1 AND ${lineLength} GREATER 33)
            math(EXPR _pos "${_pos}+34")
            string(SUBSTRING "${_line}" ${_pos} -1 _sub_architecture)
            string(REPLACE " " ";" _sub_architecture "${_sub_architecture}")
        endif()
        string(FIND "${_line}" "==Qt=magic=Qt== Build-ABI:" _pos)
        if (_pos GREATER -1)
            math(EXPR _pos "${_pos}+26")
            string(SUBSTRING "${_line}" ${_pos} -1 _build_abi)
        endif()
    endforeach()

    if (NOT _architecture OR NOT _build_abi)
        message(FATAL_ERROR "Failed to extract architecture data from file.")
    endif()

    set(TEST_architecture 1 CACHE INTERNAL "Ran the architecture test")
    set(TEST_architecture_arch "${_architecture}" CACHE INTERNAL "Target machine architecture")
    list(APPEND QT_BASE_CONFIGURE_TESTS_VARS_TO_EXPORT TEST_architecture_arch)
    set(TEST_subarch 1 CACHE INTERNAL "Ran machine subArchitecture test")
    foreach(it ${_sub_architecture})
        # Equivalent to qmake's QT_CPU_FEATURES.$arch.
        set(TEST_arch_${TEST_architecture_arch}_subarch_${it} 1 CACHE INTERNAL "Target sub architecture result")
        list(APPEND QT_BASE_CONFIGURE_TESTS_VARS_TO_EXPORT TEST_arch_${TEST_architecture_arch}_subarch_${it})
    endforeach()
    set(TEST_buildAbi "${_build_abi}" CACHE INTERNAL "Target machine buildAbi")
    list(APPEND QT_BASE_CONFIGURE_TESTS_VARS_TO_EXPORT TEST_buildAbi)
    set(QT_BASE_CONFIGURE_TESTS_VARS_TO_EXPORT ${QT_BASE_CONFIGURE_TESTS_VARS_TO_EXPORT} CACHE INTERNAL "Test variables that should be exported")

    list(JOIN _sub_architecture " " subarch_summary)
    set_property(GLOBAL PROPERTY qt_configure_subarch_summary "${subarch_summary}")
endfunction()


function(qt_run_config_test_posix_iconv)
    set(source "#include <iconv.h>

int main(int, char **)
{
    iconv_t x = iconv_open(\"\", \"\");

    char *inp;
    char *outp;
    size_t inbytes, outbytes;
    iconv(x, &inp, &inbytes, &outp, &outbytes);

    iconv_close(x);

    return 0;
}")
    check_cxx_source_compiles("${source}" HAVE_POSIX_ICONV)

    if(NOT HAVE_POSIX_ICONV)
        set(_req_libraries "${CMAKE_REQUIRE_LIBRARIES}")
        set(CMAKE_REQUIRE_LIBRARIES "iconv")
        check_cxx_source_compiles("${source}" HAVE_POSIX_ICONV)
        set(CMAKE_REQUIRE_LIBRARIES "${_req_libraries}")
        if(HAVE_POSIX_ICONV)
            set(TEST_iconv_needlib 1 CACHE INTERNAL "Need to link against libiconv")
        endif()
    endif()

    set(TEST_posix_iconv "${HAVE_POSIX_ICONV}" CACHE INTERNAL "POSIX iconv")
endfunction()


function(qt_run_config_test_sun_iconv)
    set(source "#include <iconv.h>

int main(int, char **)
{
    iconv_t x = iconv_open(\"\", \"\");

    const char *inp;
    char *outp;
    size_t inbytes, outbytes;
    iconv(x, &inp, &inbytes, &outp, &outbytes);

    iconv_close(x);

    return 0;
}")
    if(DARWIN)
        # as per !config.darwin in configure.json
        set(HAVE_SUN_ICONV OFF)
    else()
        check_cxx_source_compiles("${source}" HAVE_SUN_ICONV)
    endif()

    set(TEST_sun_iconv "${HAVE_SUN_ICONV}" CACHE INTERNAL "SUN libiconv")
endfunction()

function(qt_run_linker_version_script_support)
    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/version_flag.map" "VERS_1 { global: sym; };
VERS_2 { global: sym; }
VERS_1;
")
    if(DEFINED CMAKE_REQUIRED_FLAGS)
        set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
    else()
        set(CMAKE_REQUIRED_FLAGS "")
    endif()
    set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script=\"${CMAKE_CURRENT_BINARY_DIR}/version_flag.map\"")
    check_cxx_source_compiles("int main(void){return 0;}" HAVE_LD_VERSION_SCRIPT)
    if(DEFINED CMAKE_REQUIRED_FLAGS_SAVE)
        set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
    endif()
    file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")

    # For some reason the linker command line written by the XCode generator, which is
    # subsequently executed by xcodebuild, ignores the linker flag, and thus the test
    # seemingly succeeds. Explicitly disable the version script test on darwin platforms.
    if(APPLE)
        set(HAVE_LD_VERSION_SCRIPT OFF)
    endif()

    set(TEST_ld_version_script "${HAVE_LD_VERSION_SCRIPT}" CACHE INTERNAL "linker version script support")
endfunction()

function(qt_run_qtbase_config_tests)
    qt_run_config_test_posix_iconv()

    add_library(Iconv INTERFACE)
    if(TEST_iconv_needlib)
       target_link_libraries(Iconv PUBLIC iconv)
    endif()

    if(NOT TEST_posix_iconv)
        qt_run_config_test_sun_iconv()
    endif()
    qt_run_config_test_architecture()
    qt_run_linker_version_script_support()
endfunction()

# The qmake build of android does not perform the right architecture tests and
# forcefully disables sse4 on android x86. We have to mimic this behavior
# for now
if (CMAKE_ANDROID_ARCH_ABI STREQUAL x86)
    set(QT_FEATURE_sse4_1 OFF CACHE BOOL INTERNAL FORCE)
    set(QT_FEATURE_sse4_2 OFF CACHE BOOL INTERNAL FORCE)
    set(TEST_subarch_sse4_1 FALSE CACHE BOOL INTERNAL FORCE)
    set(TEST_subarch_sse4_2 FALSE CACHE BOOL INTERNAL FORCE)
endif()
qt_run_qtbase_config_tests()