Configure: fixed clang detection on MINIX.
As per POSIX, basic regular expressions have no alternations, and the
interpretation of the "\|" construct is undefined. At least on MINIX
and Solaris grep interprets "\|" as literal "|", and not as an alternation
as GNU grep does. Removed such constructs introduced in f1daa0356a1d.
This fixes clang detection on MINIX.
diff --git a/auto/cc/clang b/auto/cc/clang
index 19bdaaa..9d900c2 100644
--- a/auto/cc/clang
+++ b/auto/cc/clang
@@ -5,7 +5,7 @@
# clang
-NGX_CLANG_VER=`$CC -v 2>&1 | grep '\(clang\|LLVM\) version' 2>&1 \
+NGX_CLANG_VER=`$CC -v 2>&1 | grep 'version' 2>&1 \
| sed -e 's/^.* version \(.*\)/\1/'`
echo " + clang version: $NGX_CLANG_VER"
diff --git a/auto/cc/name b/auto/cc/name
index 35d319e..ded93f5 100644
--- a/auto/cc/name
+++ b/auto/cc/name
@@ -44,7 +44,11 @@
NGX_CC_NAME=gcc
echo " + using GNU C compiler"
-elif `$CC -v 2>&1 | grep '\(clang\|LLVM\) version' >/dev/null 2>&1`; then
+elif `$CC -v 2>&1 | grep 'clang version' >/dev/null 2>&1`; then
+ NGX_CC_NAME=clang
+ echo " + using Clang C compiler"
+
+elif `$CC -v 2>&1 | grep 'LLVM version' >/dev/null 2>&1`; then
NGX_CC_NAME=clang
echo " + using Clang C compiler"
