llvm/autoconf/m4/bison.m4
Reid Spencer 491f6812ef 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

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#
# 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(,
ac_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
])