ConfigureChecks.cmake

   1 include(CheckIncludeFile)
   2 include(CheckSymbolExists)
   3 include(CheckFunctionExists)
   4 include(CheckLibraryExists)
   5 include(CheckTypeSize)
   6 include(CheckStructHasMember)
   7 include(CheckPrototypeDefinition)
   8 include(TestBigEndian)
   9
  10 set(PACKAGE ${PROJECT_NAME})
  11 set(VERSION ${PROJECT_VERSION})
  12
  13 set(BINARYDIR ${pam_wrapper_BINARY_DIR})
  14 set(SOURCEDIR ${pam_wrapper_SOURCE_DIR})
  15
  16 function(COMPILER_DUMPVERSION _OUTPUT_VERSION)
  17     # Remove whitespaces from the argument.
  18     # This is needed for CC="ccache gcc" cmake ..
  19     string(REPLACE " " "" _C_COMPILER_ARG "${CMAKE_C_COMPILER_ARG1}")
  20
  21     execute_process(
  22         COMMAND
  23             ${CMAKE_C_COMPILER} ${_C_COMPILER_ARG} -dumpversion
  24         OUTPUT_VARIABLE _COMPILER_VERSION
  25     )
  26
  27     string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
  28            _COMPILER_VERSION "${_COMPILER_VERSION}")
  29
  30     set(${_OUTPUT_VERSION} ${_COMPILER_VERSION} PARENT_SCOPE)
  31 endfunction()
  32
  33 # HEADERS
  34 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
  35 check_include_file(unistd.h HAVE_UNISTD_H)
  36 check_include_file(security/pam_appl.h HAVE_SECURITY_PAM_APPL_H)
  37 check_include_file(security/pam_modules.h HAVE_SECURITY_PAM_MODULES_H)
  38 check_include_file(security/pam_ext.h HAVE_SECURITY_PAM_EXT_H)
  39
  40 # FUNCTIONS
  41 check_function_exists(strncpy HAVE_STRNCPY)
  42 check_function_exists(vsnprintf HAVE_VSNPRINTF)
  43 check_function_exists(snprintf HAVE_SNPRINTF)
  44 check_function_exists(getprogname HAVE_GETPROGNAME)
  45 check_function_exists(getexecname HAVE_GETEXECNAME)
  46
  47 check_prototype_definition(pam_vprompt
  48     "int pam_vprompt(const pam_handle_t *_pamh, int _style, char **_resp, const char *_fmt, va_list _ap)"
  49     "-1"
  50     "stdio.h;sys/types.h;security/pam_appl.h;security/pam_modules.h"
  51     HAVE_PAM_VPROMPT_CONST)
  52
  53 check_prototype_definition(pam_prompt
  54     "int pam_prompt(const pam_handle_t *_pamh, int _style, char **_resp, const char *_fmt, ...)"
  55     "-1"
  56     "stdio.h;sys/types.h;security/pam_appl.h;security/pam_modules.h"
  57     HAVE_PAM_PROMPT_CONST)
  58
  59 check_prototype_definition(pam_strerror
  60     "const char *pam_strerror(const pam_handle_t *_pamh, int _error_number)"
  61     "NULL"
  62     "stdio.h;sys/types.h;security/pam_appl.h;security/pam_modules.h"
  63     HAVE_PAM_STRERROR_CONST)
  64
  65 # LIBRARIES
  66 find_library(PAM_LIBRARY NAMES libpam.so.0 pam)
  67 set(PAM_LIBRARY ${PAM_LIBRARY})
  68 find_library(PAM_MISC_LIBRARY NAMES pam_misc)
  69 if (PAM_MISC_LIBRARY)
  70         set(HAVE_PAM_MISC TRUE)
  71 endif()
  72
  73 check_library_exists(${PAM_LIBRARY} openpam_set_option "" HAVE_OPENPAM)
  74
  75 # PAM FUNCTIONS
  76 set(CMAKE_REQUIRED_LIBRARIES ${PAM_LIBRARY})
  77 check_function_exists(pam_syslog HAVE_PAM_SYSLOG)
  78 check_function_exists(pam_vsyslog HAVE_PAM_VSYSLOG)
  79 check_function_exists(pam_start_confdir HAVE_PAM_START_CONFDIR)
  80 unset(CMAKE_REQUIRED_LIBRARIES)
  81
  82 # OPTIONS
  83
  84 if (LINUX)
  85     if (HAVE_SYS_SYSCALL_H)
  86        list(APPEND CMAKE_REQUIRED_DEFINITIONS "-DHAVE_SYS_SYSCALL_H")
  87     endif (HAVE_SYS_SYSCALL_H)
  88     if (HAVE_SYSCALL_H)
  89         list(APPEND CMAKE_REQUIRED_DEFINITIONS "-DHAVE_SYSCALL_H")
  90     endif (HAVE_SYSCALL_H)
  91
  92     set(CMAKE_REQUIRED_DEFINITIONS)
  93 endif (LINUX)
  94
  95 # COMPAT
  96 if (HAVE_OPENPAM_H)
  97     set(HAVE_OPENPAM    1)
  98 endif ()
  99
 100 check_c_source_compiles("
 101 #include <stdbool.h>
 102 int main(void) {
 103     bool x;
 104     bool *p_x = &x;
 105     __atomic_load(p_x, &x, __ATOMIC_RELAXED);
 106     return 0;
 107 }" HAVE_GCC_ATOMIC_BUILTINS)
 108
 109 check_c_source_compiles("
 110 __thread int tls;
 111
 112 int main(void) {
 113     return 0;
 114 }" HAVE_GCC_THREAD_LOCAL_STORAGE)
 115
 116 check_c_source_compiles("
 117 void test_constructor_attribute(void) __attribute__ ((constructor));
 118
 119 void test_constructor_attribute(void)
 120 {
 121      return;
 122 }
 123
 124 int main(void) {
 125      return 0;
 126 }" HAVE_CONSTRUCTOR_ATTRIBUTE)
 127
 128 check_c_source_compiles("
 129 void test_destructor_attribute(void) __attribute__ ((destructor));
 130
 131 void test_destructor_attribute(void)
 132 {
 133     return;
 134 }
 135
 136 int main(void) {
 137     return 0;
 138 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 139
 140 check_c_source_compiles("
 141 #pragma init (test_constructor)
 142 void test_constructor(void);
 143
 144 void test_constructor(void)
 145 {
 146      return;
 147 }
 148
 149 int main(void) {
 150      return 0;
 151 }" HAVE_PRAGMA_INIT)
 152
 153 check_c_source_compiles("
 154 #pragma fini (test_destructor)
 155 void test_destructor(void);
 156
 157 void test_destructor(void)
 158 {
 159     return;
 160 }
 161
 162 int main(void) {
 163     return 0;
 164 }" HAVE_PRAGMA_FINI)
 165
 166 check_c_source_compiles("
 167 void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
 168
 169 int main(void) {
 170     return 0;
 171 }" HAVE_FUNCTION_ATTRIBUTE_FORMAT)
 172
 173 # SYSTEM LIBRARIES
 174
 175 check_library_exists(dl dlopen "" HAVE_LIBDL)
 176 if (HAVE_LIBDL)
 177     find_library(DLFCN_LIBRARY dl)
 178 endif (HAVE_LIBDL)
 179
 180 if (OSX)
 181     set(HAVE_APPLE 1)
 182 endif (OSX)
 183
 184 # ENDIAN
 185 if (NOT WIN32)
 186     test_big_endian(WORDS_BIGENDIAN)
 187 endif (NOT WIN32)
 188
 189 set(UIDWRAP_REQUIRED_LIBRARIES ${DLFCN_LIBRARY} CACHE INTERNAL "uidwrap required system libraries")