Add a regress test that ensures our pure assembly code builds with gcc

This requires egcc to be installed, if not we'll just skip the test.

Discussed with tb@

1 files changed, 36 insertions, 0 deletions

diff --git a/src/regress/lib/libcrypto/assembly/Makefile b/src/regress/lib/libcrypto/assembly/Makefile
new file mode 100644
index 0000000000..48c316cc9f
--- /dev/null
+++ b/src/regress/lib/libcrypto/assembly/Makefile
@@ -0,0 +1,36 @@
+# $OpenBSD: Makefile,v 1.1 2026/01/25 10:18:39 jsing Exp $
+
+ARCH ?!= arch -s
+EGCC = /usr/local/bin/egcc
+
+.if !exists(${EGCC})
+regress:
+        @echo package gcc is required for this regress
+        @echo SKIPPED
+.else
+
+.if ${ARCH} == "aarch64"
+ASSEMBLY += sha/sha1_aarch64_ce.S
+ASSEMBLY += sha/sha256_aarch64_ce.S
+ASSEMBLY += sha/sha512_aarch64_ce.S
+.elif ${ARCH} == "amd64"
+ASSEMBLY += md5/md5_amd64_generic.S
+ASSEMBLY += sha/sha1_amd64_generic.S
+ASSEMBLY += sha/sha1_amd64_shani.S
+ASSEMBLY += sha/sha256_amd64_generic.S
+ASSEMBLY += sha/sha256_amd64_shani.S
+ASSEMBLY += sha/sha512_amd64_generic.S
+.endif
+
+.for assembly in ${ASSEMBLY}
+regress-${assembly}:
+        @echo "Checking ${assembly} compiles with gcc"
+        @${EGCC} -o /dev/null -c ${.CURDIR}/../../../../lib/libcrypto/${assembly}
+
+REGRESS_TARGETS += regress-${assembly}
+
+.endfor
+
+.endif
+
+.include <bsd.regress.mk>