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extconf.rb: no empty CPP

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* ext/fiddle/extconf.rb: pass CPP only if necessary, should not
  make it empty.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48933 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-12-23 13:07:39 +00:00
parent 5b6fc3f006
commit 132415bf9e
1 changed files with 1 additions and 1 deletions
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2
ext/fiddle/extconf.rb
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@ -65,11 +65,11 @@ begin
--enable-builddir=#{RUBY_PLATFORM}
]
args << libffi.opt if libffi.opt
args << "CPP=#{cpp}" if cpp
args.concat %W[
CC=#{cc} CFLAGS=#{libffi.cflags}
CXX=#{cxx} CXXFLAGS=#{RbConfig.expand("$(CXXFLAGS)", nowarn)}
LD=#{ld} LDFLAGS=#{libffi.ldflags}
CPP=#{cpp}
]
FileUtils.rm_f("#{libffi.include}/ffitarget.h")