1# Copyright (c) 2010 Vladimir Prus. 2# Copyright (c) 2013 Steven Watanabe 3# 4# Use, modification and distribution is subject to the Boost Software 5# License Version 1.0. (See accompanying file LICENSE_1_0.txt or 6# http://www.boost.org/LICENSE_1_0.txt) 7 8# Supports the bzip library 9# 10# After 'using bzip2', the following targets are available: 11# 12# /bzip2//bzip2 -- The bzip library 13 14import project ; 15import ac ; 16import errors ; 17import feature ; 18import "class" : new ; 19import targets ; 20import path ; 21import modules ; 22import indirect ; 23import make ; 24import os ; 25import print ; 26import property ; 27import property-set ; 28 29header = bzlib.h ; 30names = bz2 ; 31 32sources = blocksort.c bzlib.c compress.c crctable.c 33 decompress.c huffman.c randtable.c ; 34 35library-id = 0 ; 36 37if --debug-configuration in [ modules.peek : ARGV ] 38{ 39 .debug = true ; 40} 41 42# Initializes the bzip library. 43# 44# bzip can be configured either to use pre-existing binaries 45# or to build the library from source. 46# 47# Options for configuring a prebuilt bzip:: 48# 49# <search> 50# The directory containing the bzip binaries. 51# <name> 52# Overrides the default library name. 53# <include> 54# The directory containing the bzip headers. 55# 56# If none of these options is specified, then the environmental 57# variables BZIP2_LIBRARY_PATH, BZIP2_NAME, and BZIP2_INCLUDE will 58# be used instead. 59# 60# Options for building bzip from source:: 61# 62# <source> 63# The bzip source directory. Defaults to the environmental variable 64# BZIP2_SOURCE. 65# <tag> 66# A rule which computes the actual name of the compiled 67# libraries based on the build properties. Ignored 68# when using precompiled binaries. 69# <build-name> 70# The base name to use for the compiled library. Ignored 71# when using precompiled binaries. 72# 73# Examples:: 74# 75# # Find bzip in the default system location 76# using bzip2 ; 77# # Build bzip from source 78# using bzip2 : 1.0.6 : <source>/home/sergey/src/bzip2-1.0.6 ; 79# # Find bzip in /usr/local 80# using bzip2 : 1.0.6 81# : <include>/usr/local/include <search>/usr/local/lib ; 82# # Build bzip from source for msvc and find 83# # prebuilt binaries for gcc. 84# using bzip2 : 1.0.6 : <source>C:/Devel/src/bzip2-1.0.6 : <toolset>msvc ; 85# using bzip2 : 1.0.6 : : <toolset>gcc ; 86# 87rule init ( 88 version ? 89 # The bzip version (currently ignored) 90 91 : options * 92 # A list of the options to use 93 94 : requirements * 95 # The requirements for the bzip target 96 97 : is-default ? 98 # Default configurations are only used when bzip 99 # has not yet been configured. This option is 100 # deprecated. A configuration will be treated 101 # as a default when none of <include>, <search>, 102 # <name>, and <source> are present. 103 ) 104{ 105 local caller = [ project.current ] ; 106 107 if ! $(.initialized) 108 { 109 .initialized = true ; 110 111 project.initialize $(__name__) ; 112 .project = [ project.current ] ; 113 project bzip2 ; 114 } 115 116 local library-path = [ feature.get-values <search> : $(options) ] ; 117 local include-path = [ feature.get-values <include> : $(options) ] ; 118 local source-path = [ feature.get-values <source> : $(options) ] ; 119 local library-name = [ feature.get-values <name> : $(options) ] ; 120 local tag = [ feature.get-values <tag> : $(options) ] ; 121 local build-name = [ feature.get-values <build-name> : $(options) ] ; 122 123 if ! $(library-path) && ! $(include-path) && ! $(source-path) && ! $(library-name) 124 { 125 is-default = true ; 126 } 127 128 condition = [ property-set.create $(requirements) ] ; 129 condition = [ property-set.create [ $(condition).base ] ] ; 130 131 local no-build-from-source ; 132 # Ignore environmental BZIP2_SOURCE if this initialization 133 # requested to search for a specific pre-built library. 134 if $(library-path) || $(include-path) || $(library-name) 135 { 136 if $(source-path) || $(tag) || $(build-name) 137 { 138 errors.user-error "incompatible options for bzip2:" 139 [ property.select <search> <include> <name> : $(options) ] "and" 140 [ property.select <source> <tag> <build-name> : $(options) ] ; 141 } 142 } 143 else 144 { 145 source-path ?= [ os.environ BZIP2_SOURCE ] ; 146 if $(source-path) 147 { 148 source-path = [ path.root [ path.make $(source-path) ] 149 [ path.pwd ] ] ; 150 } 151 } 152 153 if $(.configured.$(condition)) 154 { 155 if $(is-default) 156 { 157 if $(.debug) 158 { 159 ECHO "notice: [bzip2] bzip is already configured" ; 160 } 161 } 162 else 163 { 164 errors.user-error "bzip is already configured" ; 165 } 166 return ; 167 } 168 else if $(source-path) 169 { 170 build-name ?= bz2 ; 171 library-id = [ CALC $(library-id) + 1 ] ; 172 tag = [ MATCH ^@?(.*)$ : $(tag) ] ; 173 if $(tag) 174 { 175 tag = [ indirect.make $(tag) : [ $(caller).project-module ] ] ; 176 } 177 sources = [ path.glob $(source-path) : $(sources) ] ; 178 def-file = [ path.glob $(source-path) : libbz2.def ] ; 179 if $(.debug) 180 { 181 ECHO "notice: [bzip2] Building bzip from source as $(build-name)" ; 182 if $(condition) 183 { 184 ECHO "notice: [bzip2] Condition" [ $(condition).raw ] ; 185 } 186 if $(sources) 187 { 188 ECHO "notice: [bzip2] found bzip source in $(source-path)" ; 189 } 190 else 191 { 192 ECHO "warning: [bzip2] could not find bzip source in $(source-path)" ; 193 } 194 } 195 local target ; 196 if $(sources) 197 { 198 if ! $(.def-file-target) 199 { 200 .def-file-target = [ targets.create-metatarget make-target-class 201 : $(.project) : libbz2.def : $(def-file) 202 : <action>@bzip2.make-bz2-def-file ] 203 ; 204 } 205 target = [ targets.create-typed-target LIB : $(.project) 206 : $(build-name).$(library-id) 207 : $(sources) 208 : $(requirements) 209 <tag>@$(tag) 210 <include>$(source-path) 211 <toolset>msvc:<define>_CRT_SECURE_NO_DEPRECATE 212 <toolset>msvc:<define>_SCL_SECURE_NO_DEPRECATE 213 <link>shared:<def-file>libbz2.def 214 : 215 : <include>$(source-path) ] ; 216 } 217 218 local mt = [ new ac-library bzip2 : $(.project) : $(condition) ] ; 219 $(mt).set-header $(header) ; 220 $(mt).set-default-names $(names) ; 221 if $(target) 222 { 223 $(mt).set-target $(target) ; 224 } 225 targets.main-target-alternative $(mt) ; 226 } 227 else 228 { 229 if $(.debug) 230 { 231 ECHO "notice: [bzip2] Using pre-installed library" ; 232 if $(condition) 233 { 234 ECHO "notice: [bzip2] Condition" [ $(condition).raw ] ; 235 } 236 } 237 238 local mt = [ new ac-library bzip2 : $(.project) : $(condition) : 239 $(include-path) : $(library-path) : $(library-name) ] ; 240 $(mt).set-header $(header) ; 241 $(mt).set-default-names $(names) ; 242 targets.main-target-alternative $(mt) ; 243 } 244 .configured.$(condition) = true ; 245} 246 247if [ os.name ] = NT 248{ 249 local rule read-file ( file ) 250 { 251 return [ SPLIT_BY_CHARACTERS [ SHELL "type \"$(file:G=)\" 2>nul" ] : "\n" ] ; 252 } 253} 254else if [ os.name ] = VMS 255{ 256 local rule read-file ( file ) 257 { 258 return [ SPLIT_BY_CHARACTERS [ SHELL "PIPE TYPE $(file:W) 2>NL:" ] : "\n" ] ; 259 } 260} 261else 262{ 263 local rule read-file ( file ) 264 { 265 return [ SPLIT_BY_CHARACTERS [ SHELL "cat \"$(file:G=)\" 2>/dev/null" ] : "\n" ] ; 266 } 267} 268 269rule make-bz2-def-file ( target : source : properties * ) 270{ 271 print.output $(target) ; 272 for local line in [ read-file $(source) ] 273 { 274 if ! [ MATCH "(LIBRARY[ \t]+LIBBZ2)" : $(line) ] 275 { 276 print.text $(line) : yes ; 277 } 278 } 279} 280