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55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
dnl
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dnl Check Bison version
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dnl AC_PROG_BISON([MIN_VERSION=2.4])
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dnl
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dnl Will define BISON_USE_PARSER_H_EXTENSION if Automake is < 1.11
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dnl for use with .h includes.
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dnl
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AC_DEFUN([AC_PROG_BISON], [
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if test "x$1" = "x" ; then
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bison_required_version="2.4"
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else
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bison_required_version="$1"
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fi
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AC_CHECK_PROG(have_prog_bison, [bison], [yes],[no])
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AC_DEFINE_UNQUOTED([BISON_VERSION], [0.0], [Bison version if bison is not available])
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#Do not use *.h extension for parser header files, use newer *.hh
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bison_use_parser_h_extension=false
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if test "$have_prog_bison" = "yes" ; then
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AC_MSG_CHECKING([for bison version >= $bison_required_version])
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bison_version=`bison --version | head -n 1 | cut '-d ' -f 4`
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AC_DEFINE_UNQUOTED([BISON_VERSION], [$bison_version], [Defines bison version])
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if test "$bison_version" \< "$bison_required_version" ; then
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BISON=:
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([Bison version $bison_required_version or higher must be installed on the system!])
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else
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AC_MSG_RESULT([yes])
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BISON=bison
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AC_SUBST(BISON)
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#Verify automake version 1.11 headers for yy files are .h, > 1.12 uses .hh
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automake_version=`automake --version | head -n 1 | cut '-d ' -f 4`
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AC_DEFINE_UNQUOTED([AUTOMAKE_VERSION], [$automake_version], [Defines automake version])
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if test "$automake_version" \< "1.12" ; then
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#Use *.h extension for parser header file
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bison_use_parser_h_extension=true
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echo "Automake version < 1.12"
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AC_DEFINE([BISON_USE_PARSER_H_EXTENSION], [1], [Use *.h extension for parser header file])
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fi
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fi
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else
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BISON=:
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AC_MSG_RESULT([NO])
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fi
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AM_CONDITIONAL([BISON_USE_PARSER_H_EXTENSION], [test x$bison_use_parser_h_extension = xtrue])
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AC_SUBST(BISON)
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])
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