mkmf.rb: clean generated files

* lib/mkmf.rb (try_link0): remove generated files other than the
  executable file.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57723 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 6 deletions

diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 42e39ca454..4a3a105688 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -526,6 +526,7 @@ MSG
   end
 
   def try_link0(src, opt="", *opts, &b) # :nodoc:
+    exe = CONFTEST+$EXEEXT
     cmd = link_command("", opt)
     if $universal
       require 'tmpdir'
@@ -539,7 +540,10 @@ MSG
       end
     else
       try_do(src, cmd, *opts, &b)
-    end and File.executable?(CONFTEST+$EXEEXT)
+    end and File.executable?(exe) or return nil
+    exe
+  ensure
+    MakeMakefile.rm_rf(*Dir["#{CONFTEST}*"]-[exe])
   end
 
   # Returns whether or not the +src+ can be compiled as a C source and linked
@@ -553,10 +557,9 @@ MSG
   # [+src+] a String which contains a C source
   # [+opt+] a String which contains linker options
   def try_link(src, opt="", *opts, &b)
-    try_link0(src, opt, *opts, &b)
-  ensure
-    MakeMakefile.rm_f "#{CONFTEST}*"
-    MakeMakefile.rm_rf "#{CONFTEST}.dSYM"
+    exe = try_link0(src, opt, *opts, &b) or return false
+    MakeMakefile.rm_f exe
+    true
   end
 
   # Returns whether or not the +src+ can be compiled as a C source.  +opt+ is
@@ -730,7 +733,7 @@ int main() {printf("%"PRI_CONFTEST_PREFIX"#{neg ? 'd' : 'u'}\\n", conftest_const
           end
         end
       ensure
-        MakeMakefile.rm_f "#{CONFTEST}*"
+        MakeMakefile.rm_f "#{CONFTEST}#{$EXEEXT}"
       end
     end
     nil