llvm-6502/autoconf/m4/bison.m4

#
# Check for Bison. 
#
# This macro verifies that Bison is installed.  If successful, then
# 1) YACC is set to bison -y (to emulate YACC calls)
# 2) BISON is set to bison
#
AC_DEFUN([AC_PROG_BISON],
[AC_CACHE_CHECK([],[llvm_cv_has_bison],
[AC_PROG_YACC()
])
if test "$YACC" != "bison -y"; then
  AC_MSG_ERROR([bison not found but required])
else
  AC_SUBST(BISON,[bison],[location of bison])
fi
])
Individual autoconf function broken out of acincludes.m4. This change per the recommended style guide for autoconf and so that individual autoconf functions can more easily be shared across projects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16223 91177308-0d34-0410-b5e6-96231b3b80d8 2004-09-07 06:56:14 +00:00			`#`
			`# Check for Bison.`
			`#`
			`# This macro verifies that Bison is installed. If successful, then`
			`# 1) YACC is set to bison -y (to emulate YACC calls)`
			`# 2) BISON is set to bison`
			`#`
			`AC_DEFUN([AC_PROG_BISON],`
Eliminate duplicate "checking" message. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18229 91177308-0d34-0410-b5e6-96231b3b80d8 2004-11-25 04:42:25 +00:00			`[AC_CACHE_CHECK([],[llvm_cv_has_bison],`
Individual autoconf function broken out of acincludes.m4. This change per the recommended style guide for autoconf and so that individual autoconf functions can more easily be shared across projects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16223 91177308-0d34-0410-b5e6-96231b3b80d8 2004-09-07 06:56:14 +00:00			`[AC_PROG_YACC()`
			`])`
			`if test "$YACC" != "bison -y"; then`
			`AC_MSG_ERROR([bison not found but required])`
			`else`
			`AC_SUBST(BISON,[bison],[location of bison])`
			`fi`
			`])`