From 3271400a5e29ce317d8bf66d395c0a4f2a8c0874 Mon Sep 17 00:00:00 2001
From: Guangyuan Yang <ygy@FreeBSD.org>
Date: Sat, 6 Nov 2021 21:26:02 -0400
Subject: Mk/Uses/go.mk: fix gomod-clean target when lang/go is not installed

make distclean target will break when lang/go is not installed. This
provides an informational feedback and skips the gomod-clean target if
go executable is not available.

PR:		258359
Submitted by:	Rin Morningstar <ports.maintainer@evilphi.com>
Reviewed by:	dmgk
Differential Revision:	https://reviews.freebsd.org/D32054

(cherry picked from commit f76516f11076cb293ce87bccfc37797d82844063)
---
 Mk/Uses/go.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Mk/Uses/go.mk b/Mk/Uses/go.mk
index 81946128114a..32972c902342 100644
--- a/Mk/Uses/go.mk
+++ b/Mk/Uses/go.mk
@@ -215,8 +215,12 @@ do-test:
 
 .if ${go_ARGS:Mmodules} && defined(GO_MODULE)
 gomod-clean:
+.if exists(${GO_CMD})
 	@${ECHO_MSG} "===>  Cleaning Go module cache"
 	@${SETENV} ${GO_ENV} ${GO_CMD} clean -modcache
+.else
+	@${ECHO_MSG} "===>    Skipping since ${GO_CMD} is not installed"
+.endif
 
 # Hook up to distclean
 .if !target(post-clean) && !make(clean)
-- 
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