X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=configure.ac;h=f623263f00463014638773702f3925ad77af6cf7;hb=e183a8d7e22298181bcf07529f04aed1568809fb;hp=6cdfcd6fb7b22e11dacf86374f5ba5701005d349;hpb=b1cad5912a658356bdcb49aa208e15307b3a61a0;p=collectd.git

diff --git a/configure.ac b/configure.ac
index 6cdfcd6f..f623263f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -54,6 +54,10 @@ AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
 AC_PROG_LEX
 AC_PROG_YACC
+
+# Warn when pkg.m4 is missing
+m4_pattern_forbid([^_?PKG_[A-Z_]+$],[*** pkg.m4 missing, please install pkg-config])
+
 PKG_PROG_PKG_CONFIG
 
 AC_CHECK_PROG([have_protoc_c], [protoc-c], [yes], [no])