From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Mon, 29 Jun 2020 06:55:15 +0000 (+0300)
Subject: configure: Properly fail if bison or flex is missing
X-Git-Tag: 2.3.13~485
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dd87051e9ef0c7527ce264e53c3d05c643fa5da8;p=thirdparty%2Fdovecot%2Fcore.git

configure: Properly fail if bison or flex is missing

If bison or flex is missing, and are needed, fail configure.
---

diff --git a/configure.ac b/configure.ac
index 7703d0130b..884d42c124 100644
--- a/configure.ac
+++ b/configure.ac
@@ -297,8 +297,14 @@ AC_ISC_POSIX
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_CXX # lucene plugin needs this
-AC_CHECK_TOOL([FLEX],[flex],AC_ERROR(flex is required))
-AC_CHECK_TOOL([BISON],[bison],AC_ERROR(bison is required))
+AC_CHECK_TOOL([FLEX],[flex],[:])
+AC_CHECK_TOOL([BISON],[bison],[:])
+AS_IF([test "$BISON" = ":" && test ! -e src/lib/event-filter-parser.h],
+  AC_MSG_ERROR([Bison is required when building from git])
+])
+AS_IF([test "$FLEX" = ":" && test ! -e src/lib/event-filter-lexer.c],
+  AC_MSG_ERROR([flex is required when building from git])
+])
 AC_HEADER_STDC
 AC_C_INLINE
 AC_PROG_LIBTOOL