From 313b26f415d48e1918818cb9da54f8e8bc521f87 Mon Sep 17 00:00:00 2001 From: Bill Spitzak Date: Thu, 2 Apr 2015 19:20:00 -0700 Subject: [PATCH] config: use simpler regexp syntax to get dot version I wasted a lot of time before I figured out that I needed to add those square brackets to get this to work. Sigh... Reviewed-by: Bryce Harrington --- configure.ac | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index 6bbec59b..271eec3e 100644 --- a/configure.ac +++ b/configure.ac @@ -141,7 +141,7 @@ if test "x$enable_documentation" = "xyes"; then AC_MSG_ERROR([Documentation build requested but graphviz's dot not found. Install graphviz or disable the documentation using --disable-documentation]) fi AC_MSG_CHECKING([for compatible dot version]) - dot_version=`$DOT -V 2>&1|$GREP -oP '(?<=version\W)@<:@0-9.@:>@*(?=\W(.*))'` + dot_version=`$DOT -V 2>&1|$GREP -o ['[0-9]*\.[0-9]*\.[0-9]*']` AS_VERSION_COMPARE([$dot_version], [2.26.0], [AC_MSG_RESULT([no]) AC_MSG_ERROR([Graphviz dot $dot_version too old. Graphviz 2.26+ required for documentation build. Install required graphviz version or disable the documentation using --disable-documentation])],