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authorJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2016-02-29 13:02:08 +0100
committerJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2016-02-29 13:02:08 +0100
commita3a984901f580d1a7d07cbfceb5dc279c035dcb1 (patch)
tree783cad476c7b0e8674dc2078d52117bf1ddab2fa
parent3b0941302c0940e625ea545b096a20319a0d8a19 (diff)
Support older pkg-config packages
Resolve the pkg-config 0.28 or greater dependency introduced by the patch "Add bash completion to the install routine."
-rw-r--r--configure.ac17
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 1de0808..bb6d673 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,23 @@ AC_ARG_ENABLE([bashcompl],
[Install bash completion for ipset]),
[enable_bashcompl="$enableval"], [enable_bashcompl="no"])
+# backward compatibility with older pkg-config
+m4_ifndef([PKG_CHECK_VAR], [
+# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# -------------------------------------------
+# Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])# PKG_CHECK_VAR
+])
+
if test "x$enable_bashcompl" = "xyes"; then
PKG_CHECK_VAR(bashcompdir, [bash-completion], [completionsdir], , bashcompdir="${sysconfdir}/bash_completion.d")
AC_SUBST(bashcompdir)