libllvm: fix Android versioning regression that broke setting PIE on ARM (#5078)

packages/libllvm/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://clang.llvm.org/
 TERMUX_PKG_DESCRIPTION="Modular compiler and toolchain technologies library"
 TERMUX_PKG_LICENSE="NCSA"
 TERMUX_PKG_VERSION=9.0.1
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SHA256=(00a1ee1f389f81e9979f3a640a01c431b3021de0d42278f6508391a2f0b81c9a
 		   5778512b2e065c204010f88777d44b95250671103e434f9dc7363ab2e3804253		   
 		   86262bad3e2fd784ba8c5e2158d7aa36f12b85f2515e95bc81d65d75bb9b0c82
@@ -59,7 +59,7 @@ TERMUX_PKG_HAS_DEBUG=false
 # common.min.50.ompt.optional should be common.deb.50.ompt.optional when doing debug build
 
 termux_step_post_extract_package() {
-	if [ "$TERMUX_PKG_QUICK_REBUILD" != "true" ]; then
+	if [ "$TERMUX_PKG_QUICK_REBUILD" = "false" ]; then
 		mv clang-${TERMUX_PKG_VERSION}.src tools/clang
 		mv lld-${TERMUX_PKG_VERSION}.src tools/lld
 		mv openmp-${TERMUX_PKG_VERSION}.src projects/openmp
@@ -75,7 +75,7 @@ termux_step_host_build() {
 }
 
 termux_step_pre_configure() {
-	if [ "$TERMUX_PKG_QUICK_REBUILD" != "true" ]; then
+	if [ "$TERMUX_PKG_QUICK_REBUILD" = "false" ]; then
 		mkdir projects/openmp/runtime/src/android
 		cp $TERMUX_PKG_BUILDER_DIR/nl_types.h projects/openmp/runtime/src/android
 		cp $TERMUX_PKG_BUILDER_DIR/nltypes_stubs.cpp projects/openmp/runtime/src/android

packages/libllvm/include-llvm-ADT-Triple.h.patch

@@ -0,0 +1,15 @@
+diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h
+index 926039ca5982..0e4b55733f5e 100644
+--- a/include/llvm/ADT/Triple.h
++++ b/include/llvm/ADT/Triple.h
+@@ -666,6 +666,10 @@ public:
+     unsigned Env[3];
+     getEnvironmentVersion(Env[0], Env[1], Env[2]);
+ 
++    // If not specified, set a default Android API.
++    if (Env[0] == 0)
++      Env[0] = __ANDROID_API__;
++
+     // 64-bit targets did not exist before API level 21 (Lollipop).
+     if (isArch64Bit() && Env[0] < 21)
+       Env[0] = 21;