From 63c6ac73fc46199f925ce1df6602125ed6dbc985 Mon Sep 17 00:00:00 2001
From: edoapra <edoardo.apra@gmail.com>
Date: Fri, 1 Sep 2023 14:19:15 -0700
Subject: [PATCH] check if pkg-config is available

---
 src/tools/guess-mpidefs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/tools/guess-mpidefs b/src/tools/guess-mpidefs
index 473806b32c..cc5b64a7d8 100755
--- a/src/tools/guess-mpidefs
+++ b/src/tools/guess-mpidefs
@@ -159,8 +159,10 @@ function get_mpi_lib ()
       fi
    done
    # homebrew hwloc
-   if pkg-config --exists hwloc; then
-       outlist="${outlist} $(pkg-config --libs-only-L hwloc 2> /dev/null) -lhwloc"
+   if [ $(command -v pkg-config 2> /dev/null) -ne 0 ]; then
+    if pkg-config --exists hwloc; then
+	outlist="${outlist} $(pkg-config --libs-only-L hwloc 2> /dev/null) -lhwloc"
+    fi
    fi
    echo ${outlist}
 }