Revert "configure.ac: make flex and bison required programs"

peti · peti · commit a0d29040f79b · 2010-06-24T22:22:24.000Z
This reverts commit 22405. Apparently, these programs aren't necessarily
required when building from a release archive.
diff --git a/configure.ac b/configure.ac
@@ -159,8 +159,8 @@ NEED_PROG(patch, patch)
 AC_PATH_PROG(xmllint, xmllint, false)
 AC_PATH_PROG(xsltproc, xsltproc, false)
 AC_PATH_PROG(w3m, w3m, false)
-NEED_PROG(flex, flex)
-NEED_PROG(bison, bison)
+AC_PATH_PROG(flex, flex, false)
+AC_PATH_PROG(bison, bison, false)
 NEED_PROG(perl, perl)
 NEED_PROG(sed, sed)
 NEED_PROG(tar, tar)
