Keep /usr/lib/clang/x.y.z/include in the main package as all these
headers (altivec.h, msa.h, x86intrin.h etc) are required to build
programs *with* clang, not against it.
---
 main/clang/APKBUILD | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/main/clang/APKBUILD b/main/clang/APKBUILD
index bbabdb5971..a7663a2b6a 100644
--- a/main/clang/APKBUILD
+++ b/main/clang/APKBUILD
@@ -4,7 +4,7 @@
 pkgname=clang
 # Note: Update together with llvm.
 pkgver=9.0.0
-pkgrel=0
+pkgrel=1
 _llvmver=${pkgver%%.*}
 pkgdesc="A C language family front-end for LLVM"
 arch="all"
@@ -81,6 +81,14 @@ static() {
 	mv "$pkgdir"/usr/lib/*.a "$subpkgdir"/usr/lib/
 }
 
+dev() {
+	default_dev
+
+	# move back usr/lib/clang/x.y.z/include with files such as altivec.h, msa.h etc
+	# these are needed to build programs *with* clang, not *against* it.
+	mv "$subpkgdir"/usr/lib/clang "$pkgdir"/usr/lib/
+}
+
 analyzer() {
 	pkgdesc="Clang source code analysis framework"
 	depends="$pkgname=$pkgver-r$pkgrel perl python2"
-- 
2.23.0