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1 # |
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2 # Config.cmake -- CMake build system for irccd |
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3 # |
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4 # Copyright (c) 2013-2016 David Demelier <markand@malikania.fr> |
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5 # |
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6 # Permission to use, copy, modify, and/or distribute this software for any |
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7 # purpose with or without fee is hereby granted, provided that the above |
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8 # copyright notice and this permission notice appear in all copies. |
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9 # |
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10 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 # |
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18 |
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19 include(CheckFunctionExists) |
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20 include(CheckIncludeFile) |
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21 include(CheckStructHasMember) |
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22 include(CheckSymbolExists) |
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23 include(CheckTypeSize) |
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24 |
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25 # --------------------------------------------------------- |
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26 # Global compile flags |
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27 # --------------------------------------------------------- |
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28 |
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29 # |
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30 # Recent versions of CMake has nice C++ feature detection for modern |
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31 # C++ but they are still a bit buggy so we use this |
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32 # instead. |
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33 # |
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34 if (CMAKE_CXX_COMPILER_ID MATCHES "GNU") |
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35 # |
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36 # For GCC, we require at least GCC 5.1 |
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37 # |
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38 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.1") |
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39 message(FATAL_ERROR "You need at least GCC 5.1") |
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40 endif () |
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41 |
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42 set(CMAKE_CXX_FLAGS "-Wall -Wextra -std=c++14 ${CMAKE_CXX_FLAGS}") |
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43 elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang") |
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44 # |
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45 # LLVM/clang implemented C++14 starting from version 3.4 but the |
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46 # switch -std=c++14 was not available. |
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47 # |
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48 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.4") |
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49 message(FATAL_ERROR "You need at least Clang 3.4") |
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50 endif () |
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51 |
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52 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.5") |
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53 set(CMAKE_CXX_FLAGS "-Wall -Wextra -std=c++1y ${CMAKE_CXX_FLAGS}") |
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54 else () |
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55 set(CMAKE_CXX_FLAGS "-Wall -Wextra -std=c++14 ${CMAKE_CXX_FLAGS}") |
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56 endif () |
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57 else () |
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58 message(WARNING "Unsupported ${CMAKE_CXX_COMPILER_ID}, may not build correctly.") |
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59 endif () |
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60 |
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61 if (WIN32) |
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62 set(CMAKE_CXX_FLAGS "-D_WIN32_WINNT=0x0600 ${CMAKE_CXX_FLAGS}") |
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63 endif () |
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64 |
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65 if (CMAKE_SIZEOF_VOID_P MATCHES "8") |
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66 set(IRCCD_64BITS TRUE) |
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67 else () |
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68 set(IRCCD_64BITS FALSE) |
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69 endif () |
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70 |
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71 # --------------------------------------------------------- |
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72 # System identification |
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73 # --------------------------------------------------------- |
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74 |
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75 if (WIN32) |
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76 set(IRCCD_SYSTEM_WINDOWS TRUE) |
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77 elseif (APPLE) |
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78 set(IRCCD_SYSTEM_MAC TRUE) |
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79 elseif (CMAKE_SYSTEM_NAME MATCHES "FreeBSD") |
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80 set(IRCCD_SYSTEM_FREEBSD TRUE) |
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81 elseif (CMAKE_SYSTEM_NAME MATCHES "NetBSD") |
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82 set(IRCCD_SYSTEM_NETBSD TRUE) |
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83 elseif (CMAKE_SYSTEM_NAME MATCHES "OpenBSD") |
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84 set(IRCCD_SYSTEM_OPENBSD TRUE) |
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85 elseif (CMAKE_SYSTEM_NAME MATCHES "Linux") |
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86 set(IRCCD_SYSTEM_LINUX TRUE) |
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87 endif () |
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88 |
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89 # --------------------------------------------------------- |
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90 # Portability requirements |
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91 # --------------------------------------------------------- |
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92 |
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93 check_type_size(int8_t HAVE_INT8) |
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94 check_type_size(uint8_t HAVE_UINT8) |
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95 check_type_size(int16_t HAVE_INT16) |
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96 check_type_size(uint16_t HAVE_UINT16) |
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97 check_type_size(int32_t HAVE_INT32) |
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98 check_type_size(uint32_t HAVE_UINT32) |
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99 check_type_size(int64_t HAVE_INT64) |
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100 check_type_size(uint64_t HAVE_UINT64) |
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101 |
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102 if (NOT HAVE_STDINT_H) |
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103 message("irccd requires stdint.h or cstdint header") |
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104 endif () |
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105 |
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106 # |
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107 # Where any of these function / feature is required, include the <irccd-config.h> file. |
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108 # |
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109 # The following variables are defined in irccd-config.h |
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110 # |
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111 # HAVE_ACCESS - True if has access(2) function (and sys/types.h and sys/stat.h), |
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112 # HAVE_DAEMON - True if daemon(3), |
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113 # HAVE_GETPID - True if has getpid(2) function (and sys/types.h and unistd.h and grp.h), |
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114 # HAVE_POPEN - True if has popen(3) function (in stdio.h) |
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115 # HAVE_SETGID - True if has setgid(2) function and getgrnam(3) (and sys/types.h and unistd.h and pwd.h), |
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116 # HAVE_SETPROGNAME - True if setprogname(3) is available from C library, |
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117 # HAVE_SETUID - True if has setuid(2) function and getpwnam(3) (and sys/types.h and unistd.h and pwd.h), |
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118 # HAVE_STAT - True if has stat(2) function (and sys/types.h and sys/stat.h), |
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119 # HAVE_STAT_ST_DEV - The struct stat has st_dev field, |
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120 # HAVE_STAT_ST_INO - The struct stat has st_ino field, |
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121 # HAVE_STAT_ST_NLINK - The struct stat has st_nlink field, |
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122 # HAVE_STAT_ST_UID - The struct stat has st_uid field, |
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123 # HAVE_STAT_ST_GID - The struct stat has st_gid field, |
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124 # HAVE_STAT_ST_ATIME - The struct stat has st_atime field, |
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125 # HAVE_STAT_ST_MTIME - The struct stat has st_mtime field, |
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126 # HAVE_STAT_ST_CTIME - The struct stat has st_ctime field, |
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127 # HAVE_STAT_ST_SIZE - The struct stat has st_size field, |
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128 # HAVE_STAT_ST_BLKSIZE - The struct stat has st_blksize field, |
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129 # HAVE_STAT_ST_BLOCKS - The struct stat has st_blocks field, |
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130 # HAVE_SYSLOG - True if syslog functions are available (and syslog.h), |
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131 # |
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132 |
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133 # Check for unistd.h |
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134 check_include_file(unistd.h HAVE_UNISTD_H) |
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135 |
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136 # Check for sys/types.h |
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137 check_include_file(sys/types.h HAVE_SYS_TYPES_H) |
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138 |
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139 # Check for daemon(3) function, include: |
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140 # |
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141 # #include <cstdlib> |
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142 check_function_exists(daemon HAVE_DAEMON) |
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143 |
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144 # Check of setprogname(3) function, include: |
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145 # |
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146 # #include <cstdlib> |
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147 check_function_exists(setprogname HAVE_SETPROGNAME) |
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148 |
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149 # access() POSIX function |
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150 # |
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151 # If HAVE_ACCESS is defined, include: |
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152 # |
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153 # #include <unistd.h> |
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154 check_function_exists(access HAVE_ACCESS) |
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155 |
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156 if (NOT HAVE_UNISTD_H) |
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157 set(HAVE_ACCESS FALSE) |
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158 endif () |
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159 |
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160 # getpid() function |
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161 # |
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162 # If HAVE_GETPID is defined, include: |
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163 # |
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164 # #include <sys/types.h> |
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165 # #include <unistd.h> |
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166 check_function_exists(getpid HAVE_GETPID) |
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167 |
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168 if (NOT HAVE_UNISTD_H OR NOT HAVE_SYS_TYPES_H) |
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169 set(HAVE_GETPID FALSE) |
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170 endif () |
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171 |
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172 # setgid() function (and getgrnam) |
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173 # |
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174 # If HAVE_SETGID is defined, include: |
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175 # |
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176 # #include <sys/types.h> |
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177 # #include <unistd.h> |
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178 # #include <grp.h> // only for getgrnam |
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179 check_include_file(grp.h HAVE_GRP_H) |
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180 check_function_exists(getgrnam HAVE_GETGRNAM) |
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181 check_function_exists(setgid HAVE_SETGID) |
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182 |
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183 if (NOT HAVE_UNISTD_H OR NOT HAVE_SYS_TYPES_H OR NOT HAVE_GETGRNAM OR NOT HAVE_GRP_H) |
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184 set(HAVE_SETGID FALSE) |
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185 endif () |
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186 |
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187 # popen() function |
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188 # |
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189 # If HAVE_POPEN is defined, include; |
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190 # |
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191 # #include <cstdio> |
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192 check_function_exists(popen HAVE_POPEN) |
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193 |
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194 # setuid() function (and getpwnam) |
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195 # |
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196 # If HAVE_SETUID is defined, include: |
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197 # |
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198 # #include <sys/types.h> |
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199 # #include <unistd.h> |
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200 # #include <pwd.h> // only for getpwnam |
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201 check_include_file(pwd.h HAVE_PWD_H) |
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202 check_function_exists(getpwnam HAVE_GETPWNAM) |
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203 check_function_exists(setuid HAVE_SETUID) |
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204 |
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205 if (NOT HAVE_UNISTD_H OR NOT HAVE_SYS_TYPES_H OR NOT HAVE_GETPWNAM OR NOT HAVE_PWD_H) |
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206 set(HAVE_SETUID FALSE) |
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207 endif () |
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208 |
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209 # stat(2) function |
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210 # |
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211 # If HAVE_STAT is defined, include: |
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212 # |
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213 # #include <sys/types.h> |
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214 # #include <sys/stat.h> |
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215 check_include_file(sys/stat.h HAVE_SYS_STAT_H) |
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216 check_function_exists(stat HAVE_STAT) |
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217 |
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218 # If the sys/stat.h is not found, we disable stat(2) |
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219 if (NOT HAVE_SYS_STAT_H OR NOT HAVE_SYS_TYPES_H) |
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220 set(HAVE_STAT FALSE) |
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221 endif () |
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222 |
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223 # syslog functions |
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224 # |
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225 # If HAVE_SYSLOG is defined, include: |
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226 # |
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227 # #include <syslog.h> |
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228 check_include_file(syslog.h HAVE_SYSLOG_H) |
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229 check_function_exists(openlog HAVE_OPENLOG) |
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230 check_function_exists(syslog HAVE_SYSLOG) |
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231 check_function_exists(closelog HAVE_CLOSELOG) |
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232 |
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233 if (NOT HAVE_SYSLOG_H OR NOT HAVE_OPENLOG OR NOT HAVE_CLOSELOG) |
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234 set(HAVE_SYSLOG FALSE) |
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235 endif () |
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236 |
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237 # Check for struct stat fields. |
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238 check_struct_has_member("struct stat" st_atime sys/stat.h HAVE_STAT_ST_ATIME) |
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239 check_struct_has_member("struct stat" st_blksize sys/stat.h HAVE_STAT_ST_BLKSIZE) |
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240 check_struct_has_member("struct stat" st_blocks sys/stat.h HAVE_STAT_ST_BLOCKS) |
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241 check_struct_has_member("struct stat" st_ctime sys/stat.h HAVE_STAT_ST_CTIME) |
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242 check_struct_has_member("struct stat" st_dev sys/stat.h HAVE_STAT_ST_DEV) |
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243 check_struct_has_member("struct stat" st_gid sys/stat.h HAVE_STAT_ST_GID) |
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244 check_struct_has_member("struct stat" st_ino sys/stat.h HAVE_STAT_ST_INO) |
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245 check_struct_has_member("struct stat" st_mode sys/stat.h HAVE_STAT_ST_MODE) |
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246 check_struct_has_member("struct stat" st_mtime sys/stat.h HAVE_STAT_ST_MTIME) |
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247 check_struct_has_member("struct stat" st_nlink sys/stat.h HAVE_STAT_ST_NLINK) |
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248 check_struct_has_member("struct stat" st_rdev sys/stat.h HAVE_STAT_ST_RDEV) |
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249 check_struct_has_member("struct stat" st_size sys/stat.h HAVE_STAT_ST_SIZE) |
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250 check_struct_has_member("struct stat" st_uid sys/stat.h HAVE_STAT_ST_UID) |
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251 |
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252 # Configuration file |
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253 configure_file( |
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254 ${CMAKE_CURRENT_LIST_DIR}/internal/irccd-config.h.in |
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255 ${CMAKE_BINARY_DIR}/irccd-config.h |
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256 ) |
