Module: Libyajl2Build

Defined in:
ext/libyajl2/extconf.rb

Defined Under Namespace

Classes: BuildError

Constant Summary collapse

LIBYAJL2_VENDOR_DIR = 
File.expand_path("../vendor/yajl", __FILE__).freeze
PREFIX = 
File.expand_path("../../../lib/libyajl2/vendored-libyajl2", __FILE__).freeze

Class Method Summary collapse

Class Method Details

.libyajl2_vendor_dir ⇒ Object 



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# File 'ext/libyajl2/extconf.rb', line 18

def self.libyajl2_vendor_dir
  LIBYAJL2_VENDOR_DIR
end

.makemakefiles ⇒ Object 



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# File 'ext/libyajl2/extconf.rb', line 44

def self.makemakefiles
  setup_env
  dir_config("libyajl")
  create_makefile("libyajl")

  # on windows the Makefile will try to export Init_libyajl which is wrong because we aren't a ruby lib.
  # i could not figure out how to tell mkmf.rb to stop being so helpful, so instead will just patch it here.
  if windows?
    makefile = IO.read("Makefile")
    makefile.gsub!(/\$\(DEFFILE\)/, '')
    File.open("Makefile", 'w+') {|f| f.write(makefile) }
  end

  # we cheat and build it right away...
  system("make V=1")
  # ...so we can hack up what install does later and copy over the include files

  # not sure why ruby windows produces .so's instead of .dll's
  if windows?
    FileUtils.mv "libyajl.so", "yajl.dll"
  end

  File.open("Makefile", "w+") do |f|
    f.write <<EOF
TARGET = libyajl
DLLIB = $(TARGET).#{RbConfig::MAKEFILE_CONFIG['DLEXT']}
all:

EOF
    if windows?
      f.write <<EOF
install:
\tmkdir -p #{prefix}/lib
\tcp yajl.dll #{prefix}/lib/yajl.dll
\tcp yajl.dll.a #{prefix}/lib/yajl.dll.a
\tmkdir -p #{prefix}/include/yajl
\tcp yajl/*.h #{prefix}/include/yajl
EOF
    else
      f.write <<EOF
install:
\tmkdir -p #{prefix}/lib
\tcp $(DLLIB) #{prefix}/lib/$(DLLIB)
\tmkdir -p #{prefix}/include/yajl
\tcp yajl/*.h #{prefix}/include/yajl
EOF
    end
  end
end

.prefix ⇒ Object 



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# File 'ext/libyajl2/extconf.rb', line 22

def self.prefix
  PREFIX
end

.setup_env ⇒ Object 



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# File 'ext/libyajl2/extconf.rb', line 26

def self.setup_env
  RbConfig::MAKEFILE_CONFIG['CC'] = ENV['CC'] if ENV['CC']

  # set some sane defaults
  if RbConfig::MAKEFILE_CONFIG['CC'] =~ /gcc|clang/
    # magic flags copied from upstream yajl build system (-std=c99 is necessary for older gcc)
    $CFLAGS << " -std=c99 -pedantic -Wpointer-arith -Wno-format-y2k -Wstrict-prototypes -Wmissing-declarations -Wnested-externs -Wextra  -Wundef -Wwrite-strings -Wold-style-definition -Wredundant-decls -Wno-unused-parameter -Wno-sign-compare -Wmissing-prototypes"
    $CFLAGS << " -O2"  # match what the upstream uses for optimization

    # create the implib on windows
    if windows?
      $LDFLAGS << " -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--out-implib=yajl.dll.a"
    end
  end

  $CFLAGS << " -DNDEBUG"
end

.windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/libyajl2/extconf.rb', line 14

def self.windows?
  !!(RUBY_PLATFORM =~ /mswin|mingw|windows/)
end