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authorOndřej Surý <ondrej@sury.org>2015-05-28 12:04:07 +0200
committerOndřej Surý <ondrej@sury.org>2015-05-28 12:04:07 +0200
commit5f953b6ce26d7efb9f43051014026b1de412743b (patch)
tree69f430b846f863d86965ee52fc932796cfda16cc /m4
parentstrstrip: fix for whitespace-only string (diff)
downloadknot-5f953b6ce26d7efb9f43051014026b1de412743b.tar.xz
knot-5f953b6ce26d7efb9f43051014026b1de412743b.zip
Add AS_VAR_COPY compatibility macro for CentOS
Diffstat (limited to 'm4')
-rw-r--r--m4/ax_pkg_check_vars.m44
1 files changed, 4 insertions, 0 deletions
diff --git a/m4/ax_pkg_check_vars.m4 b/m4/ax_pkg_check_vars.m4
index 4e407f0cc..b8922dd01 100644
--- a/m4/ax_pkg_check_vars.m4
+++ b/m4/ax_pkg_check_vars.m4
@@ -1,5 +1,9 @@
# ax_pkg_check_var.m4 - Macros to locate and utilise variables from pkg-config. -*- Autoconf -*-
+m4_ifndef([AS_VAR_COPY],
+[m4_define([AS_VAR_COPY],
+[AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])])])
+
# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# -------------------------------------------