From 63c1bb51629b1bdb150885c72bd297ff7d7f228a Mon Sep 17 00:00:00 2001
From: Jung-uk Kim <jkim@FreeBSD.org>
Date: Wed, 26 Aug 2020 16:55:28 +0000
Subject: [PATCH] Fix Clang version detection.

We prepend "FreeBSD" to Clang version string.  This broke compiler test for
AVX instruction support.

Reported by:	jhb
---
 crypto/openssl/crypto/aes/asm/aesni-mb-x86_64.pl      | 2 +-
 crypto/openssl/crypto/aes/asm/aesni-sha1-x86_64.pl    | 2 +-
 crypto/openssl/crypto/aes/asm/aesni-sha256-x86_64.pl  | 2 +-
 crypto/openssl/crypto/bn/asm/rsaz-avx2.pl             | 2 +-
 crypto/openssl/crypto/bn/asm/rsaz-x86_64.pl           | 2 +-
 crypto/openssl/crypto/bn/asm/x86_64-mont.pl           | 2 +-
 crypto/openssl/crypto/bn/asm/x86_64-mont5.pl          | 2 +-
 crypto/openssl/crypto/chacha/asm/chacha-x86.pl        | 2 +-
 crypto/openssl/crypto/chacha/asm/chacha-x86_64.pl     | 2 +-
 crypto/openssl/crypto/ec/asm/ecp_nistz256-avx2.pl     | 2 +-
 crypto/openssl/crypto/ec/asm/ecp_nistz256-x86_64.pl   | 2 +-
 crypto/openssl/crypto/ec/asm/x25519-x86_64.pl         | 2 +-
 crypto/openssl/crypto/modes/asm/aesni-gcm-x86_64.pl   | 2 +-
 crypto/openssl/crypto/modes/asm/ghash-x86_64.pl       | 2 +-
 crypto/openssl/crypto/poly1305/asm/poly1305-x86.pl    | 2 +-
 crypto/openssl/crypto/poly1305/asm/poly1305-x86_64.pl | 2 +-
 crypto/openssl/crypto/sha/asm/sha1-586.pl             | 2 +-
 crypto/openssl/crypto/sha/asm/sha1-mb-x86_64.pl       | 2 +-
 crypto/openssl/crypto/sha/asm/sha1-x86_64.pl          | 2 +-
 crypto/openssl/crypto/sha/asm/sha256-586.pl           | 2 +-
 crypto/openssl/crypto/sha/asm/sha256-mb-x86_64.pl     | 2 +-
 crypto/openssl/crypto/sha/asm/sha512-x86_64.pl        | 2 +-
 22 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/crypto/openssl/crypto/aes/asm/aesni-mb-x86_64.pl b/crypto/openssl/crypto/aes/asm/aesni-mb-x86_64.pl
index be2434f12041..a80cfdc13948 100755
--- a/crypto/openssl/crypto/aes/asm/aesni-mb-x86_64.pl
+++ b/crypto/openssl/crypto/aes/asm/aesni-mb-x86_64.pl
@@ -70,7 +70,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/aes/asm/aesni-sha1-x86_64.pl b/crypto/openssl/crypto/aes/asm/aesni-sha1-x86_64.pl
index 42fe5d469ea6..04fd13be5e09 100755
--- a/crypto/openssl/crypto/aes/asm/aesni-sha1-x86_64.pl
+++ b/crypto/openssl/crypto/aes/asm/aesni-sha1-x86_64.pl
@@ -108,7 +108,7 @@ $avx=1 if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
 $avx=1 if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	   `ml64 2>&1` =~ /Version ([0-9]+)\./ &&
 	   $1>=10);
-$avx=1 if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/ && $2>=3.0);
+$avx=1 if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/ && $2>=3.0);
 
 $shaext=1;	### set to zero if compiling for 1.0.1
 
diff --git a/crypto/openssl/crypto/aes/asm/aesni-sha256-x86_64.pl b/crypto/openssl/crypto/aes/asm/aesni-sha256-x86_64.pl
index f1b144eccbdd..ff9b18507da0 100755
--- a/crypto/openssl/crypto/aes/asm/aesni-sha256-x86_64.pl
+++ b/crypto/openssl/crypto/aes/asm/aesni-sha256-x86_64.pl
@@ -70,7 +70,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=12);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/bn/asm/rsaz-avx2.pl b/crypto/openssl/crypto/bn/asm/rsaz-avx2.pl
index 9b54f9d9ed3c..0be771febc16 100755
--- a/crypto/openssl/crypto/bn/asm/rsaz-avx2.pl
+++ b/crypto/openssl/crypto/bn/asm/rsaz-avx2.pl
@@ -66,7 +66,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$avx = ($ver>=3.0) + ($ver>=3.01);
 	$addx = ($ver>=3.03);
diff --git a/crypto/openssl/crypto/bn/asm/rsaz-x86_64.pl b/crypto/openssl/crypto/bn/asm/rsaz-x86_64.pl
index 8172dace74ee..cf08ce9b8356 100755
--- a/crypto/openssl/crypto/bn/asm/rsaz-x86_64.pl
+++ b/crypto/openssl/crypto/bn/asm/rsaz-x86_64.pl
@@ -81,7 +81,7 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=12);
 }
 
-if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$addx = ($ver>=3.03);
 }
diff --git a/crypto/openssl/crypto/bn/asm/x86_64-mont.pl b/crypto/openssl/crypto/bn/asm/x86_64-mont.pl
index e00cac448b89..f14d4e63b975 100755
--- a/crypto/openssl/crypto/bn/asm/x86_64-mont.pl
+++ b/crypto/openssl/crypto/bn/asm/x86_64-mont.pl
@@ -75,7 +75,7 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=12);
 }
 
-if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$addx = ($ver>=3.03);
 }
diff --git a/crypto/openssl/crypto/bn/asm/x86_64-mont5.pl b/crypto/openssl/crypto/bn/asm/x86_64-mont5.pl
index 887770b30db1..8c37d132e476 100755
--- a/crypto/openssl/crypto/bn/asm/x86_64-mont5.pl
+++ b/crypto/openssl/crypto/bn/asm/x86_64-mont5.pl
@@ -60,7 +60,7 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=12);
 }
 
-if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$addx = ($ver>=3.03);
 }
diff --git a/crypto/openssl/crypto/chacha/asm/chacha-x86.pl b/crypto/openssl/crypto/chacha/asm/chacha-x86.pl
index a1f5694b691e..492fda5f114c 100755
--- a/crypto/openssl/crypto/chacha/asm/chacha-x86.pl
+++ b/crypto/openssl/crypto/chacha/asm/chacha-x86.pl
@@ -62,7 +62,7 @@ $ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32" &&
 		$1>=10);	# first version supporting AVX
 
 $ymm=1 if ($xmm && !$ymm &&
-		`$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/ &&
+		`$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/ &&
 		$2>=3.0);	# first version supporting AVX
 
 $a="eax";
diff --git a/crypto/openssl/crypto/chacha/asm/chacha-x86_64.pl b/crypto/openssl/crypto/chacha/asm/chacha-x86_64.pl
index 647d2537ceae..227ee59ff2ba 100755
--- a/crypto/openssl/crypto/chacha/asm/chacha-x86_64.pl
+++ b/crypto/openssl/crypto/chacha/asm/chacha-x86_64.pl
@@ -85,7 +85,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/ec/asm/ecp_nistz256-avx2.pl b/crypto/openssl/crypto/ec/asm/ecp_nistz256-avx2.pl
index 5071d09ac2ec..1b7ec8464b4f 100755
--- a/crypto/openssl/crypto/ec/asm/ecp_nistz256-avx2.pl
+++ b/crypto/openssl/crypto/ec/asm/ecp_nistz256-avx2.pl
@@ -47,7 +47,7 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=12);
 }
 
-if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$avx = ($ver>=3.0) + ($ver>=3.01);
 	$addx = ($ver>=3.03);
diff --git a/crypto/openssl/crypto/ec/asm/ecp_nistz256-x86_64.pl b/crypto/openssl/crypto/ec/asm/ecp_nistz256-x86_64.pl
index de9b194510bf..b50ee70191b2 100755
--- a/crypto/openssl/crypto/ec/asm/ecp_nistz256-x86_64.pl
+++ b/crypto/openssl/crypto/ec/asm/ecp_nistz256-x86_64.pl
@@ -72,7 +72,7 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=12);
 }
 
-if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$avx = ($ver>=3.0) + ($ver>=3.01);
 	$addx = ($ver>=3.03);
diff --git a/crypto/openssl/crypto/ec/asm/x25519-x86_64.pl b/crypto/openssl/crypto/ec/asm/x25519-x86_64.pl
index 3d9d1dc1ad0c..62599dacaccd 100755
--- a/crypto/openssl/crypto/ec/asm/x25519-x86_64.pl
+++ b/crypto/openssl/crypto/ec/asm/x25519-x86_64.pl
@@ -90,7 +90,7 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$addx = ($1>=12);
 }
 
-if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
 	my $ver = $2 + $3/100.0;	# 3.1->3.01, 3.10->3.10
 	$addx = ($ver>=3.03);
 }
diff --git a/crypto/openssl/crypto/modes/asm/aesni-gcm-x86_64.pl b/crypto/openssl/crypto/modes/asm/aesni-gcm-x86_64.pl
index 959efedb0de7..60f03e4fe25b 100755
--- a/crypto/openssl/crypto/modes/asm/aesni-gcm-x86_64.pl
+++ b/crypto/openssl/crypto/modes/asm/aesni-gcm-x86_64.pl
@@ -66,7 +66,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/modes/asm/ghash-x86_64.pl b/crypto/openssl/crypto/modes/asm/ghash-x86_64.pl
index 0a0bfd575cee..9bdba41d1de5 100755
--- a/crypto/openssl/crypto/modes/asm/ghash-x86_64.pl
+++ b/crypto/openssl/crypto/modes/asm/ghash-x86_64.pl
@@ -116,7 +116,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/poly1305/asm/poly1305-x86.pl b/crypto/openssl/crypto/poly1305/asm/poly1305-x86.pl
index 4aaf63a0a1dd..2ae16a230b66 100755
--- a/crypto/openssl/crypto/poly1305/asm/poly1305-x86.pl
+++ b/crypto/openssl/crypto/poly1305/asm/poly1305-x86.pl
@@ -71,7 +71,7 @@ if ($sse2) {
 	$avx = ($1>=2.09) + ($1>=2.10);
 	}
 
-	if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/) {
+	if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/) {
 		$avx = ($2>=3.0) + ($2>3.0);
 	}
 }
diff --git a/crypto/openssl/crypto/poly1305/asm/poly1305-x86_64.pl b/crypto/openssl/crypto/poly1305/asm/poly1305-x86_64.pl
index c014be1ca9fa..5f834d8faf2a 100755
--- a/crypto/openssl/crypto/poly1305/asm/poly1305-x86_64.pl
+++ b/crypto/openssl/crypto/poly1305/asm/poly1305-x86_64.pl
@@ -90,7 +90,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=12);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/sha/asm/sha1-586.pl b/crypto/openssl/crypto/sha/asm/sha1-586.pl
index f7b85e6c6d7e..b72869b86d4a 100644
--- a/crypto/openssl/crypto/sha/asm/sha1-586.pl
+++ b/crypto/openssl/crypto/sha/asm/sha1-586.pl
@@ -144,7 +144,7 @@ $ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32" &&
 		`ml 2>&1` =~ /Version ([0-9]+)\./ &&
 		$1>=10);	# first version supporting AVX
 
-$ymm=1 if ($xmm && !$ymm && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/ &&
+$ymm=1 if ($xmm && !$ymm && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/ &&
 		$2>=3.0);	# first version supporting AVX
 
 $shaext=$xmm;	### set to zero if compiling for 1.0.1
diff --git a/crypto/openssl/crypto/sha/asm/sha1-mb-x86_64.pl b/crypto/openssl/crypto/sha/asm/sha1-mb-x86_64.pl
index a78266d62fc3..47c588715163 100755
--- a/crypto/openssl/crypto/sha/asm/sha1-mb-x86_64.pl
+++ b/crypto/openssl/crypto/sha/asm/sha1-mb-x86_64.pl
@@ -66,7 +66,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/sha/asm/sha1-x86_64.pl b/crypto/openssl/crypto/sha/asm/sha1-x86_64.pl
index 0680d6d0a2b2..89146d137b9b 100755
--- a/crypto/openssl/crypto/sha/asm/sha1-x86_64.pl
+++ b/crypto/openssl/crypto/sha/asm/sha1-x86_64.pl
@@ -119,7 +119,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/sha/asm/sha256-586.pl b/crypto/openssl/crypto/sha/asm/sha256-586.pl
index 6989d59bd735..7523dbc165fa 100755
--- a/crypto/openssl/crypto/sha/asm/sha256-586.pl
+++ b/crypto/openssl/crypto/sha/asm/sha256-586.pl
@@ -96,7 +96,7 @@ if ($xmm && !$avx && $ARGV[0] eq "win32" &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if ($xmm && !$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/) {
+if ($xmm && !$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/sha/asm/sha256-mb-x86_64.pl b/crypto/openssl/crypto/sha/asm/sha256-mb-x86_64.pl
index 81ac814effc4..c8cc6efac95c 100755
--- a/crypto/openssl/crypto/sha/asm/sha256-mb-x86_64.pl
+++ b/crypto/openssl/crypto/sha/asm/sha256-mb-x86_64.pl
@@ -67,7 +67,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }
 
diff --git a/crypto/openssl/crypto/sha/asm/sha512-x86_64.pl b/crypto/openssl/crypto/sha/asm/sha512-x86_64.pl
index 64ae641c1407..ad37850e6130 100755
--- a/crypto/openssl/crypto/sha/asm/sha512-x86_64.pl
+++ b/crypto/openssl/crypto/sha/asm/sha512-x86_64.pl
@@ -135,7 +135,7 @@ if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
 	$avx = ($1>=10) + ($1>=11);
 }
 
-if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
 	$avx = ($2>=3.0) + ($2>3.0);
 }