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	Fixed build failure of Travis CI. We need to support make srcs.
				
					
				
			git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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					 2 changed files with 5 additions and 3 deletions
				
			
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			@ -1096,7 +1096,7 @@ $(srcdir)/ext/ripper/ripper.c: $(srcdir)/ext/ripper/tools/preproc.rb $(srcdir)/p
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	$(Q) VPATH=$${PWD-`pwd`} && $(CHDIR) $(@D) && \
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	sed -e 's/{\$$([^(){}]*)[^{}]*}//g' -e /AUTOGENERATED/q depend | \
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	$(exec) $(MAKE) -f - $(mflags) \
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		Q=$(Q) ECHO=$(ECHO) RM="$(RM)" top_srcdir=../.. srcdir=. VPATH="$${VPATH}" \
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		Q=$(Q) ECHO=$(ECHO) RM="$(RM)" BISON=$(YACC) top_srcdir=../.. srcdir=. VPATH="$${VPATH}" \
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		RUBY="$(BASERUBY)" PATH_SEPARATOR="$(PATH_SEPARATOR)"
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$(srcdir)/ext/json/parser/parser.c: $(srcdir)/ext/json/parser/parser.rl
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			@ -5,7 +5,9 @@ require 'mkmf'
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require 'rbconfig'
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def main
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  unless find_executable(ENV["YACC"] || 'bison')
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  yacc = ENV["YACC"] || "bison"
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  unless find_executable(yacc)
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    unless File.exist?('ripper.c') or File.exist?("#{$srcdir}/ripper.c")
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      raise 'missing bison; abort'
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    end
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			@ -17,7 +19,7 @@ def main
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  $VPATH << '$(topdir)' << '$(top_srcdir)'
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  $INCFLAGS << ' -I$(topdir) -I$(top_srcdir)'
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  create_makefile 'ripper' do |conf|
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    conf << "BISON = #{ENV['YACC'] || 'bison'}"
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    conf << "BISON = #{yacc}"
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  end
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end
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