ext/extconf.rb in snappy-0.0.1 vs ext/extconf.rb in snappy-0.0.2

@@ -1,52 +1,79 @@
 require 'mkmf'
 require 'fileutils'
 
-unless have_library 'snappy'
-  have_header 'sys/mman.h'
+def try_configure
+  return if system "./configure --disable-option-checking --disable-dependency-tracking --disable-gtest --without-gflags"
 
-  have_header 'stdint.h'
-
-  have_header 'stddef.h'
-
   if try_run 'int main(int argc, char** argv){ return __builtin_expect(1, 1) ? 0 : 1; }'
     $defs << '-DHAVE_BUILTIN_EXPECT'
   end
 
   if try_run 'int main(int argc, char** argv){ return (__builtin_ctzll(0x100000000LL) == 32) ? 0 : 1; }'
     $defs << '-DHAVE_BUILTIN_CTZ'
   end
 
-  dst = File.expand_path Dir.pwd
+  have_header 'dlfcn.h'
+  have_header 'inttypes.h'
+  have_header 'memory.h'
+  have_header 'stddef.h'
+  have_header 'stdint.h'
+  have_header 'stdlib.h'
+  have_header 'strings.h'
+  have_header 'string.h'
+  have_header 'sys/mman.h'
+  have_header 'sys/stat.h'
+  have_header 'sys/types.h'
+  have_header 'sys/resource.h'
+  have_header 'unistd.h'
 
-  ver = "1.0.1"
+  if try_run 'int main(int argc, char** argv){ int i = 1; return *((char*)&i); }'
+    $defs << '-DWORDS_BIGENDIAN'
+  end
+end
+
+unless have_library 'snappy'
+  dst = File.dirname File.expand_path __FILE__
+
+  tar = 'tar'
+  tar = 'gnutar' if find_executable 'gnutar'
+
+  ver = "1.0.2"
   src = "snappy-#{ver}"
-  FileUtils.rm_rf src
 
-  system "curl -s http://snappy.googlecode.com/files/#{src}.tar.gz | tar xz"
+  FileUtils.rm_rf File.join dst, src
+  system "curl -s http://snappy.googlecode.com/files/#{src}.tar.gz | #{tar} xz"
 
+  src = File.join dst, src
+
+  Dir.chdir src do
+    try_configure
+  end
+
   %w(
+config.h
 snappy-internal.h
 snappy-sinksource.cc
 snappy-sinksource.h
 snappy-stubs-internal.cc
 snappy-stubs-internal.h
 snappy.cc
 snappy.h
   ).each do |file|
-    FileUtils.copy File.join(src, file), File.join(dst, file)
+    FileUtils.copy File.join(src, file), File.join(dst, file) if FileTest.exist? File.join(src, file)
   end
 
   hdr = File.open(File.join(src, 'snappy-stubs-public.h.in'), 'rb'){ |f| f.read }
   {
     %r'#if @ac_cv_have_stdint_h@' => '#ifdef HAVE_STDINT_H',
     %r'#if @ac_cv_have_stddef_h@' => '#ifdef HAVE_STDDEF_H',
     %r'@SNAPPY_MAJOR@'            => '1',
     %r'@SNAPPY_MINOR@'            => '0',
-    %r'@SNAPPY_PATCHLEVEL@'       => '1',
+    %r'@SNAPPY_PATCHLEVEL@'       => '2',
   }.each { |ptn, str| hdr.gsub! ptn, str }
   File.open(File.join(dst, 'snappy-stubs-public.h'), 'wb'){ |f| f.write hdr }
 
+  FileUtils.touch 'config.h'
 end
 
 have_library 'stdc++'
 create_makefile 'snappy'