diff options
Diffstat (limited to 'ext/ripper/extconf.rb')
-rw-r--r-- | ext/ripper/extconf.rb | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/ext/ripper/extconf.rb b/ext/ripper/extconf.rb index 89b46abcfd..6a793b8699 100644 --- a/ext/ripper/extconf.rb +++ b/ext/ripper/extconf.rb @@ -5,7 +5,7 @@ require 'mkmf' require 'rbconfig' def main - unless find_executable('bison') + unless find_executable(ENV["YACC"] || 'bison') unless File.exist?('ripper.c') or File.exist?("#{$srcdir}/ripper.c") raise 'missing bison; abort' end @@ -16,7 +16,9 @@ def main $defs << '-DRIPPER_DEBUG' if $debug $VPATH << '$(topdir)' << '$(top_srcdir)' $INCFLAGS << ' -I$(topdir) -I$(top_srcdir)' - create_makefile 'ripper' + create_makefile 'ripper' do |conf| + conf << "BISON = #{ENV['YACC'] || 'bison'}" + end end main |