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996
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1 # cfunge - A standard-conforming Befunge93/98/109 interpreter in C.
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2 # Copyright (C) 2008 Arvid Norlander <anmaster AT tele2 DOT se>
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3 #
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4 # This program is free software: you can redistribute it and/or modify
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5 # it under the terms of the GNU General Public License as published by
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6 # the Free Software Foundation, either version 3 of the License, or
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7 # (at the proxy's option) any later version. Arvid Norlander is a
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8 # proxy who can decide which future versions of the GNU General Public
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9 # License can be used.
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10 #
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU General Public License for more details.
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15 #
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16 # You should have received a copy of the GNU General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 project(CFUNGE C)
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20
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21 cmake_minimum_required(VERSION 2.6)
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22
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23 mark_as_advanced(
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24 CMAKE_BACKWARDS_COMPATIBILITY
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25 EXECUTABLE_OUTPUT_PATH
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26 LIBRARY_OUTPUT_PATH
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27 LIBRT_LOCATION
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28 BOEHM_INCLUDE_DIR
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29 BOEHM_LIBRARY_GC
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30 CURSES_CURSES_H_PATH
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31 CURSES_FORM_LIBRARY
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32 CURSES_HAVE_CURSES_H
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33 USE_CLOCK_GETTIME
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34 ENABLE_FLOATS
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35 ENABLE_TURT
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36 USE_MUDFLAP
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37 USE_WERROR
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38 USE_VALGRIND
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39 )
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40
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41 # where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ is checked
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42 set(CMAKE_MODULE_PATH
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43 ${CMAKE_SOURCE_DIR}/cmake/modules
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44 ${CMAKE_MODULE_PATH}
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45 )
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46
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47 # Set default build type.
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48 if (NOT CMAKE_BUILD_TYPE)
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49 set(CMAKE_BUILD_TYPE Release CACHE STRING
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50 "Choose the type of build, options are: None(CMAKE_C_FLAGS only used) Debug Release RelWithDebInfo MinSizeRel."
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51 FORCE)
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52 endif (NOT CMAKE_BUILD_TYPE)
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53
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54 # http://www.cmake.org/pipermail/cmake/2007-October/016786.html
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55 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
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56
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57 # Common cmake macros
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58 include(FindPkgConfig)
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59 include(CheckCCompilerFlag)
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60 include(CheckFunctionExists)
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61 include(CheckLibraryExists)
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62 include(CheckIncludeFile)
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63
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64 # Cfunge specific macros.
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65 include(CfungeCheckCflag)
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66 include(CfungeCheckFunction)
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67 include(CfungeRequireFunction)
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68 include(CfungeRequireInclude)
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69 include(CfungeRequireMultipleIncludes)
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70 include(CfungeCheckLibraryFunction)
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71 include(CfungeCheckLinkerFlag)
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72 include(CfungeCheckWarningFlags)
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73 include(CfungeSetBuildInfoFlags)
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74 include(MacroAddLinkFlags)
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75
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76 set(MAN_INSTALL_PREFIX
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77 "${CMAKE_INSTALL_PREFIX}/share/man"
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78 CACHE PATH "Where to install man page."
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79 )
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80
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81
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82
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83 ################################################################################
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84 # Options to enable optional dependencies.
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85 option(USE_GC "If this is enabled, use Boehm-GC." OFF)
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86 if(USE_GC)
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87 pkg_check_modules(BOEHMGC REQUIRED bdw-gc>=7.0)
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88
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89 find_path(BOEHM_INCLUDE_DIR gc/gc.h
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90 ${BOEHMGC_INCLUDE_DIRS}
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91 )
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92
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93 find_library(BOEHM_LIBRARY_GC NAMES gc
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94 PATHS
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95 ${BOEHMGC_LIBRARY_DIRS}
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96 )
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97 include_directories(${BOEHM_INCLUDE_DIR})
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98 link_directories(${BOEHMGC_LIBRARY_DIRS})
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99 add_definitions(-DCFUN_USE_GC)
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100 endif(USE_GC)
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101
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102 option(USE_NCURSES "Should we (try to) enable fingerprints needing ncurses?" ON)
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103
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104 option(USE_CLOCK_GETTIME "Try to use clock_gettime() instead of gettimeofday(). (Recommended.)" ON)
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105
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106 option(ENABLE_FLOATS "Enable all fingerprints using floating point. (Recommended.)" ON)
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107 if (NOT ENABLE_FLOATS)
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108 add_definitions(-DCFUN_NO_FLOATS)
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109 endif (NOT ENABLE_FLOATS)
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110
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111 option(ENABLE_TURT "Enable TURT. (Recommended.)" ON)
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112 if (NOT ENABLE_TURT)
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113 add_definitions(-DCFUN_NO_TURT)
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114 endif (NOT ENABLE_TURT)
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115
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116
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117
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118 ################################################################################
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119 # Other options
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120
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121 option(EXACT_BOUNDS "Handle shrinking bounds (slower and most programs don't need it, but follows the standard more closely)." ON)
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122 if(EXACT_BOUNDS)
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123 add_definitions(-DCFUN_EXACT_BOUNDS)
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124 endif(EXACT_BOUNDS)
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125
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126 option(USE_64BIT "Use 64-bit funge space cells (if off: use 32-bit)." ON)
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127 if(USE_64BIT)
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128 add_definitions(-DUSE64)
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129 else(USE_64BIT)
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130 add_definitions(-DUSE32)
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131 endif(USE_64BIT)
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132
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133 option(CONCURRENT_FUNGE "Enable support for concurrent funge." ON)
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134 if(CONCURRENT_FUNGE)
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135 add_definitions(-DCONCURRENT_FUNGE)
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136 endif(CONCURRENT_FUNGE)
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137
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138 option(ENABLE_TRACE "Enable support for tracing the execution (recommended)." ON)
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139 if(NOT ENABLE_TRACE)
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140 add_definitions(-DDISABLE_TRACE)
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141 endif(NOT ENABLE_TRACE)
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142
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143 option(HARDENED "If this is enabled, and GCC is used, enable stack smash protection (slows down though) and some other features." OFF)
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144 if (HARDENED)
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145 add_definitions(-D_FORTIFY_SOURCE=2)
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146 # Slows down though.
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147 CFUNGE_CHECK_CFLAG(fstack-protector -fstack-protector)
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148 endif (HARDENED)
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149
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150
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151
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152 ################################################################################
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153 # Options for cfunge developers debugging cfunge.
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154
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155 option(USE_MUDFLAP "Enable mudflap pointer debugging library (does not work with Boehm-GC), needs GCC." OFF)
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156 if(USE_MUDFLAP)
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157 if (USE_GC)
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158 message(FATAL_ERROR "You can't use mudflap and Boehm GC at the same time")
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159 endif (USE_GC)
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160 add_definitions(-fmudflap)
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161 endif(USE_MUDFLAP)
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162
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163 option(USE_VALGRIND "Add special source annotations for the memory debugger valgrind (does not work with Boehm-GC)." OFF)
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164 if(USE_VALGRIND)
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165 if (USE_GC)
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166 message(FATAL_ERROR "You can't use valgrind and Boehm GC at the same time")
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167 endif (USE_GC)
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168 add_definitions(-DENABLE_VALGRIND)
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169 endif(USE_VALGRIND)
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170
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171 option(USE_WERROR "Should we build with -Werror" OFF)
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172 if(USE_WERROR)
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173 if (CMAKE_COMPILER_IS_GNUCC)
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174 CFUNGE_CHECK_CFLAG(Werror -Werror)
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175 endif (CMAKE_COMPILER_IS_GNUCC)
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176 endif(USE_WERROR)
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177
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178
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179
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180 ################################################################################
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181 # Compiler defines.
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182 CFUNGE_CHECK_CFLAG(std_c99 -std=c99)
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183 # Feature test macros for exposing relevant definitions in headers.
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184 add_definitions(-D_POSIX_C_SOURCE=200112L -D_XOPEN_SOURCE=600)
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185
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186
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187
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188 ################################################################################
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189 # Check that certain system headers exist.
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190
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191 # These are C99 required ones
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192 CFUNGE_REQUIRE_INCLUDE(stddef.h)
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193 CFUNGE_REQUIRE_INCLUDE(stdbool.h)
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194 CFUNGE_REQUIRE_INCLUDE(stdint.h)
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195 CFUNGE_REQUIRE_INCLUDE(limits.h)
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196 CFUNGE_REQUIRE_INCLUDE(inttypes.h)
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197
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198 # POSIX.1-2001 requires these:
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199 CFUNGE_REQUIRE_INCLUDE(arpa/inet.h)
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200 CFUNGE_REQUIRE_INCLUDE(unistd.h)
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201 CFUNGE_REQUIRE_INCLUDE(fcntl.h)
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202 CFUNGE_REQUIRE_INCLUDE(sys/types.h)
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203 CFUNGE_REQUIRE_INCLUDE(sys/socket.h)
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204 CFUNGE_REQUIRE_INCLUDE(netinet/in.h)
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205 # Some includes must be checked together.
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206 CFUNGE_REQUIRE_MULTIPLE_INCLUDES("sys/types.h;netinet/tcp.h" "netinet/tcp.h")
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207 CFUNGE_REQUIRE_INCLUDE(netdb.h)
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208 CFUNGE_REQUIRE_INCLUDE(regex.h)
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209
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210 # Optional in POSIX, we need it
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211 CFUNGE_REQUIRE_INCLUDE(sys/mman.h)
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212
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213
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214
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215 ################################################################################
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216 # Existance of various functions
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217 # Some are sanity checks (required in standards), some are required by cfunge
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218 # but optional in standards, some are optionally used by cfunge.
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219 #
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220 # All those in the second category are optional in POSIX.1-2001 but required in
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221 # POSIX.1-2008
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222 #
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223 # We don't check functions that exist in C89.
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224
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225 # Sanity checks: Required by POSIX.1-2001.
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226 CFUNGE_REQUIRE_FUNCTION(dup2)
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227 CFUNGE_REQUIRE_FUNCTION(fcntl)
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228 CFUNGE_REQUIRE_FUNCTION(fork)
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229 CFUNGE_REQUIRE_FUNCTION(gettimeofday)
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230 CFUNGE_REQUIRE_FUNCTION(mkdir)
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231 CFUNGE_REQUIRE_FUNCTION(regcomp)
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232 CFUNGE_REQUIRE_FUNCTION(rmdir)
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233 # Sanity checks: Some networking functions (required by POSIX.1-2001)
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234 CFUNGE_REQUIRE_FUNCTION(getaddrinfo)
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235 CFUNGE_REQUIRE_FUNCTION(freeaddrinfo)
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236 CFUNGE_REQUIRE_FUNCTION(poll)
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237 CFUNGE_REQUIRE_FUNCTION(socket)
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238
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239 # Required: These are optional in POSIX.1-2001 but we need them.
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240 CFUNGE_REQUIRE_FUNCTION(mmap)
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241 CFUNGE_REQUIRE_FUNCTION(munmap)
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242 # Required: We require the XSI extension strdup():
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243 CFUNGE_REQUIRE_FUNCTION(strdup)
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244
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245 # Optional: Some optional ones (in POSIX.1-2001) that we use if found.
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246 # random() and srandom() are XSI extensions, we fall back on rand/srand if they
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247 # aren't available.
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248 CFUNGE_CHECK_FUNCTION(random)
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249 CFUNGE_CHECK_FUNCTION(srandom)
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250
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251 if (ENABLE_FLOATS)
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252 # Optional: C99 requires these but we fall back on double versions since many
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253 # systems still lack the long double versions.
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254 set(CMAKE_REQUIRED_LIBRARIES "-lm")
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255 CFUNGE_CHECK_FUNCTION(acosl)
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256 CFUNGE_CHECK_FUNCTION(asinl)
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257 CFUNGE_CHECK_FUNCTION(atanl)
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258 CFUNGE_CHECK_FUNCTION(cosl)
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259 CFUNGE_CHECK_FUNCTION(floorl)
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260 CFUNGE_CHECK_FUNCTION(powl)
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261 CFUNGE_CHECK_FUNCTION(roundl)
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262 CFUNGE_CHECK_FUNCTION(sinl)
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263 CFUNGE_CHECK_FUNCTION(sqrtl)
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264 CFUNGE_CHECK_FUNCTION(tanl)
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265 endif (ENABLE_FLOATS)
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266
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267
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268
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269 ################################################################################
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270 # Warnings
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271 CFUNGE_CHECK_WARNING_FLAGS()
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272
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273
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274
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275 ################################################################################
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276 # Stuff for debug/non-debug builds
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277 # No case insensitive string copmpare, lets convert to upper-case.
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278 # NOTE: CMAKE_BUILD_TYPE_UPPERCASE is used in CFUNGE_SET_BUILD_INFO_FLAGS() too.
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279 string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_UPPERCASE)
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280 if (CMAKE_BUILD_TYPE_UPPERCASE STREQUAL "DEBUG")
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281 add_definitions(-DGC_DEBUG)
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282 add_definitions(-DDEBUG)
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283 else (CMAKE_BUILD_TYPE_UPPERCASE STREQUAL "DEBUG")
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284 add_definitions(-DNDEBUG)
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285 remove_definitions(-DGC_DEBUG)
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286 remove_definitions(-DDEBUG)
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287 CFUNGE_CHECK_CFLAG(fvisibility_hidden -fvisibility=hidden)
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288 CFUNGE_CHECK_CFLAG(fno-ident -fno-ident)
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289 endif (CMAKE_BUILD_TYPE_UPPERCASE STREQUAL "DEBUG")
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290
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291
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292
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293 ################################################################################
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294 # Includes
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295 include_directories(${CFUNGE_SOURCE_DIR}/src/)
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296
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297
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298
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299 ################################################################################
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300 # Targets
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301 FILE(GLOB CFUNGE_SOURCES RELATIVE ${CFUNGE_SOURCE_DIR}
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302 lib/libghthash/*.c
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303 lib/genx/*.c
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304 lib/stringbuffer/*.c
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305 src/*.c
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306 src/funge-space/*.c
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307 src/instructions/*.c
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308 src/fingerprints/*.c
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309 src/fingerprints/*/*.c
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310 )
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311
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312 add_executable(cfunge ${CFUNGE_SOURCES})
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313
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314 # Try various nice linker flags.
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315 CFUNGE_CHECK_LINKER_FLAG(cfunge Wl_O1 -Wl,-O1)
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316 CFUNGE_CHECK_LINKER_FLAG(cfunge Wl_as-needed -Wl,--as-needed)
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317 CFUNGE_CHECK_LINKER_FLAG(cfunge Wl_warn-common -Wl,--warn-common)
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318 if (HARDENED)
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319 CFUNGE_CHECK_LINKER_FLAG(cfunge Wl_z_relro -Wl,-z,relro)
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320 CFUNGE_CHECK_LINKER_FLAG(cfunge Wl_z_now -Wl,-z,now)
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321 endif (HARDENED)
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322
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323
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324
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325 ################################################################################
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326 # Check for ncurses - needs to be done late due to libraries.
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327 # Quite a mess yes.
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328 if (USE_NCURSES)
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329 set(CURSES_NEED_NCURSES TRUE)
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330 find_package(Curses)
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331 CHECK_INCLUDE_FILE(term.h HAVE_TERM_H)
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332 if (CURSES_FOUND AND HAVE_TERM_H AND CURSES_HAVE_CURSES_H)
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333 # HACK: We should use ${CURSES_LIBRARIES} here, but that breaks static
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334 # builds as it contains the full path to ncurses.so
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335 target_link_libraries(cfunge ncurses)
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336 add_definitions(-DHAVE_NCURSES)
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337 else (CURSES_FOUND AND HAVE_TERM_H AND CURSES_HAVE_CURSES_H)
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338 message(STATUS "ncurses and/or term.h not found: disabling the TERM fingrprint.")
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339 endif (CURSES_FOUND AND HAVE_TERM_H AND CURSES_HAVE_CURSES_H)
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340 endif (USE_NCURSES)
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341
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342
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343
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344 ################################################################################
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345 # Check for clock_gettime() - needs to be done late due to possible libraries.
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346 #
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347 # clock_gettime is complex to check for since it can be in libc (FreeBSD) or in
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348 # librt (Linux).
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349 if (USE_CLOCK_GETTIME)
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350 CFUNGE_CHECK_FUNCTION(clock_gettime)
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351 if (NOT CFUNGE_HAVE_clock_gettime)
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352 find_library(LIBRT_LOCATION
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353 NAMES rt)
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354 if (NOT ${LIBRT_LOCATION} STREQUAL "LIBRT_LOCATION-NOTFOUND")
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355 get_filename_component(LIBRT_PATH ${LIBRT_LOCATION} PATH)
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356 CFUNGE_CHECK_LIBRARY_FUNCTION(cfunge rt clock_gettime ${LIBRT_PATH})
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357 endif (NOT ${LIBRT_LOCATION} STREQUAL "LIBRT_LOCATION-NOTFOUND")
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358 endif (NOT CFUNGE_HAVE_clock_gettime)
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359 endif (USE_CLOCK_GETTIME)
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360
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361
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362
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363 ################################################################################
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364 # Linking libraries
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365
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366 # Need -lm for some fingerprints.
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367 if (ENABLE_FLOATS)
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368 target_link_libraries(cfunge m)
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369 endif (ENABLE_FLOATS)
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370
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371 if(USE_GC)
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372 target_link_libraries(cfunge ${BOEHM_LIBRARY_GC})
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373 endif(USE_GC)
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374
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375 if(USE_MUDFLAP)
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376 MACRO_ADD_LINK_FLAGS(cfunge "-fmudflap")
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377 target_link_libraries(cfunge mudflap)
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378 endif(USE_MUDFLAP)
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379
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380
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381
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382 ################################################################################
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383 # Build info
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384 CFUNGE_SET_BUILD_INFO_FLAGS()
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385
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386
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387
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388 ################################################################################
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389 # Generate man page
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390 add_custom_target(build-man
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391 help2man -N "--name=A fast Befunge93/98/109 interpreter in C" --help-option=-h --version-option=-V --include doc/cfunge-man.in --include doc/cfunge-man-fingerprints.in ${CFUNGE_BINARY_DIR}/cfunge > doc/cfunge.1
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392 DEPENDS cfunge
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393 WORKING_DIRECTORY ${CFUNGE_SOURCE_DIR}
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394 COMMENT "Generating man page..."
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395 VERBATIM
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396 )
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397
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398
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399
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400 ################################################################################
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401 # Installation
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402 install(TARGETS cfunge
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403 RUNTIME DESTINATION bin
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404 )
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405 install(FILES doc/cfunge.1
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406 DESTINATION ${MAN_INSTALL_PREFIX}/man1
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407 )
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