--- sbcl-2.6.2/src/runtime/Config.sparc-sunos.~1~	2026-02-27 19:08:09.000000000 +0100
+++ sbcl-2.6.2/src/runtime/Config.sparc-sunos	2026-03-08 19:43:21.637267000 +0100
@@ -8,15 +8,13 @@
 # public domain. The software is in the public domain and is
 # provided with absolutely no warranty. See the COPYING and CREDITS
 # files for more information.
+#
+# Note: this config is for gcc-7 - NOT for gcc > 7 !!!
 
 CC = gcc
-CFLAGS += -D__EXTENSIONS__ -DSVR4 -D_REENTRANT
-ASFLAGS = -g -DSVR4 -Wa,-xarch=v8plus
-#LINKFLAGS += -v
-# This next line has nothing to do with disabling PIE. It has only to
-# do with the problem that "grep" on the build machine I'm using can't
-# parse "-e '[^f]nopie" and so gets an error in GNUmakefile.
-DISABLE_PIE=no
+CFLAGS += -mcpu=ultrasparc -mvis -mfsmuld -std=gnu11 -D__EXTENSIONS__ -DSVR4 -D_REENTRANT -fno-omit-frame-pointer -D_POSIX_PTHREAD_SEMANTICS
+ASFLAGS = -Wa,-xarch=sparcvis
+GREP = ggrep
 
 ASSEM_SRC = sparc-assem.S
 ARCH_SRC = sparc-arch.c