From d9adaebcc24a81f7fdc3d7cd4723bfbd9e5f14e2 Mon Sep 17 00:00:00 2001
From: "Artyom V. Poptsov" <poptsov.artyom@gmail.com>
Date: Sat, 22 Mar 2025 20:50:52 +0300
Subject: [PATCH] gnu: fasthenry: Fix build.

* gnu/packages/engineering.scm (fasthenry): Fix build by explicitly using
gcc-9 instead of the current gcc version.
[native-inputs]: Add gcc-9.

Change-Id: Ie2ef7fd5cd1e01ac4d273e6528e8e745f517b81f
---
 gnu/packages/engineering.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 9e8d556b1a..e1c6c1ec01 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -774,6 +774,7 @@ multipole-accelerated algorithm.")
                                        "fasthenry-spUtils.patch"
                                        "fasthenry-spSolve.patch"
                                        "fasthenry-spFactor.patch"))))
+    (native-inputs (list gcc-9))
     (build-system gnu-build-system)
     (arguments
      `(#:make-flags '("CC=gcc" "RM=rm" "SHELL=sh" "all")