blob: 8b06403d7e56a71cb31277c5d5e31f965ad9b958 (
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
|
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
CheckPrototypeDefinition
------------------------
Check if the prototype we expect is correct.
.. command:: check_prototype_definition
.. code-block:: cmake
check_prototype_definition(FUNCTION PROTOTYPE RETURN HEADER VARIABLE)
::
FUNCTION - The name of the function (used to check if prototype exists)
PROTOTYPE- The prototype to check.
RETURN - The return value of the function.
HEADER - The header files required.
VARIABLE - The variable to store the result.
Will be created as an internal cache variable.
Example:
.. code-block:: cmake
check_prototype_definition(getpwent_r
"struct passwd *getpwent_r(struct passwd *src, char *buf, int buflen)"
"NULL"
"unistd.h;pwd.h"
SOLARIS_GETPWENT_R)
The following variables may be set before calling this function to modify
the way the check is run:
::
CMAKE_REQUIRED_FLAGS = string of compile command line flags
CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
CMAKE_REQUIRED_INCLUDES = list of include directories
CMAKE_REQUIRED_LINK_OPTIONS = list of options to pass to link command
CMAKE_REQUIRED_LIBRARIES = list of libraries to link
CMAKE_REQUIRED_QUIET = execute quietly without messages
#]=======================================================================]
#
get_filename_component(__check_proto_def_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
include_guard(GLOBAL)
function(check_prototype_definition _FUNCTION _PROTOTYPE _RETURN _HEADER _VARIABLE)
if (NOT DEFINED ${_VARIABLE})
if(NOT CMAKE_REQUIRED_QUIET)
message(CHECK_START "Checking prototype ${_FUNCTION} for ${_VARIABLE}")
endif()
set(CHECK_PROTOTYPE_DEFINITION_CONTENT "/* */\n")
set(CHECK_PROTOTYPE_DEFINITION_FLAGS ${CMAKE_REQUIRED_FLAGS})
if (CMAKE_REQUIRED_LINK_OPTIONS)
set(CHECK_PROTOTYPE_DEFINITION_LINK_OPTIONS
LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
else()
set(CHECK_PROTOTYPE_DEFINITION_LINK_OPTIONS)
endif()
if (CMAKE_REQUIRED_LIBRARIES)
set(CHECK_PROTOTYPE_DEFINITION_LIBS
LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
else()
set(CHECK_PROTOTYPE_DEFINITION_LIBS)
endif()
if (CMAKE_REQUIRED_INCLUDES)
set(CMAKE_SYMBOL_EXISTS_INCLUDES
"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
else()
set(CMAKE_SYMBOL_EXISTS_INCLUDES)
endif()
foreach(_FILE ${_HEADER})
string(APPEND CHECK_PROTOTYPE_DEFINITION_HEADER
"#include <${_FILE}>\n")
endforeach()
set(CHECK_PROTOTYPE_DEFINITION_SYMBOL ${_FUNCTION})
set(CHECK_PROTOTYPE_DEFINITION_PROTO ${_PROTOTYPE})
set(CHECK_PROTOTYPE_DEFINITION_RETURN ${_RETURN})
configure_file("${__check_proto_def_dir}/CheckPrototypeDefinition.c.in"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c" @ONLY)
file(READ ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c _SOURCE)
try_compile(${_VARIABLE}
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
${CHECK_PROTOTYPE_DEFINITION_LINK_OPTIONS}
${CHECK_PROTOTYPE_DEFINITION_LIBS}
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${CHECK_PROTOTYPE_DEFINITION_FLAGS}
"${CMAKE_SYMBOL_EXISTS_INCLUDES}"
OUTPUT_VARIABLE OUTPUT)
if (${_VARIABLE})
set(${_VARIABLE} 1 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}")
if(NOT CMAKE_REQUIRED_QUIET)
message(CHECK_PASS "True")
endif()
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} passed with the following output:\n"
"${OUTPUT}\n\n")
else ()
if(NOT CMAKE_REQUIRED_QUIET)
message(CHECK_FAIL "False")
endif()
set(${_VARIABLE} 0 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} failed with the following output:\n"
"${OUTPUT}\n\n${_SOURCE}\n\n")
endif ()
endif()
endfunction()
|
