merge revision(s) 50717: [Backport ruby#11201]

	* lib/mkmf.rb (pkg_config): split --libs if --libs-only-l option
	  is not available.  patch in [ruby-core:69428] by Hans Mackowiak.
	  [ruby-core:69421] [Bug ruby#11201]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@51123 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: unak

ChangeLog

@@ -1,3 +1,9 @@
+Fri Jul  3 18:40:48 2015  Nobuyoshi Nakada  <[email protected]>
+
+	* lib/mkmf.rb (pkg_config): split --libs if --libs-only-l option
+	  is not available.  patch in [ruby-core:69428] by Hans Mackowiak.
+	  [ruby-core:69421] [Bug #11201]
+
 Fri Jul  3 18:32:37 2015  Nobuyoshi Nakada  <[email protected]>
 
 	* compile.c (iseq_compile_each): out of range NTH_REF is always

lib/mkmf.rb

@@ -1756,11 +1756,18 @@ def pkg_config(pkg, option=nil)
     elsif get and try_ldflags(ldflags = get['libs'])
       cflags = get['cflags']
       libs = get['libs-only-l']
-      ldflags = (Shellwords.shellwords(ldflags) - Shellwords.shellwords(libs)).quote.join(" ")
-      $CFLAGS += " " << cflags
-      $CXXFLAGS += " " << cflags
-      $LDFLAGS = [orig_ldflags, ldflags].join(' ')
+      if cflags
+        $CFLAGS += " " << cflags
+        $CXXFLAGS += " " << cflags
+      end
+      if libs
+        ldflags = (Shellwords.shellwords(ldflags) - Shellwords.shellwords(libs)).quote.join(" ")
+      else
+        libs, ldflags = Shellwords.shellwords(ldflags).partition {|s| s =~ /-l([^ ]+)/ }.map {|l|l.quote.join(" ")}
+      end
       $libs += " " << libs
+
+      $LDFLAGS = [orig_ldflags, ldflags].join(' ')
       Logging::message "package configuration for %s\n", pkg
       Logging::message "cflags: %s\nldflags: %s\nlibs: %s\n\n",
                        cflags, ldflags, libs

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.7"
 #define RUBY_RELEASE_DATE "2015-07-03"
-#define RUBY_PATCHLEVEL 373
+#define RUBY_PATCHLEVEL 374
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 7