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config: use simpler regexp syntax to get dot version

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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 <bryce@osg.samsung.com>
This commit is contained in:
Bill Spitzak 2015-04-02 19:20:00 -07:00 • committed by Bryce Harrington
parent c45be3d21e
commit 313b26f415
1 changed files with 1 additions and 1 deletions
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2
configure.ac
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@ -141,7 +141,7 @@ if test "x$enable_documentation" = "xyes"; then
AC_MSG_ERROR([Documentation build requested but graphviz's dot not found. Install graphviz or disable the documentation using --disable-documentation]) AC_MSG_ERROR([Documentation build requested but graphviz's dot not found. Install graphviz or disable the documentation using --disable-documentation])
fi fi
AC_MSG_CHECKING([for compatible dot version]) AC_MSG_CHECKING([for compatible dot version])
dot_version=`$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], AS_VERSION_COMPARE([$dot_version], [2.26.0],
[AC_MSG_RESULT([no]) [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])], 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])],