bdb/ext/extconf.rb
2009-09-19 12:41:24 -07:00

92 lines
2.5 KiB
Ruby

#!/usr/bin/env ruby
require 'mkmf'
inc, lib = dir_config('db')
# OS X compatibility
if(PLATFORM =~ /darwin/) then
# test if Bdb is probably universal
filetype = (IO.popen("file #{inc}/../db_dump").readline.chomp rescue nil)
# if it's not universal, ARCHFLAGS should be set
if((filetype !~ /universal binary/) && ENV['ARCHFLAGS'].nil?) then
arch = (IO.popen("uname -m").readline.chomp rescue nil)
$stderr.write %{
=========== WARNING ===========
You are building this extension on OS X without setting the
ARCHFLAGS environment variable, and BerkeleyDB does not appear
to have been built as a universal binary. If you are seeing this
message, that means that the build will probably fail.
Try setting the environment variable ARCHFLAGS
to '-arch #{arch}' before building.
For example:
(in bash) $ export ARCHFLAGS='-arch #{arch}'
(in tcsh) % setenv ARCHFLAGS '-arch #{arch}'
Then try building again.
===================================
}
# We don't exit here. Who knows? It might build.
end
end
versions=%w(db-4.8 db-4.7 db-4.6 db-4.5 db-4.4 db-4.3 db-4.2)
until versions.empty?
(lib_ok = have_library(versions.shift,'db_version', 'db.h')) && break
end
def create_header
if File.exist?("bdb_aux._c")
message("Not writing bdb_aux._c (defines), already exists\n")
return
end
message("Writing bdb_aux._c (defines), this takes a while\n")
db_header = $CPPFLAGS.split.select { |f| f =~ /^-I/ }.map { |e|
f = File.join(e[2..-1], 'db.h')
File.exists?(f) ? f : nil
}.select { |e| e }.first
n=0
defines=[]
File.open(db_header) {|fd|
File.open("bdb_aux._c","w") {|hd|
hd.puts("/* This file automatically generated by extconf.rb */\n")
fd.each_line {|l|
if l =~ %r{^#define\s+(DBC?_\w*)\s+([^\/]*)\s*(.*?)(\/\*.*)?$}
name = $1
value = $2
if macro_defined?(name,"#include <db.h>")
case value
when /^"/
hd.print(%Q{cs(mBdb,%s);\n}%[name])
when /^\(?(0x|\d)/
hd.print(%Q{cu(mBdb,%s);\n}%[name])
when /^\(?-/
hd.print(%Q{ci(mBdb,%s);\n}%[name])
else
$stderr.puts "don't know how to handle #{name} #{value.strip}, guessing UINT"
hd.print(%Q{cu(mBdb,%s);\n}%[name])
end
n+=1
end
end
}
}
message("\nwrote #{n} defines\n")
}
end
if lib_ok
create_header
create_makefile('bdb')
else
$stderr.puts("cannot create Makefile")
exit 1
end