libllvm: fixes following @buttaface's review

packages/libllvm/build.sh

@@ -50,6 +50,7 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
 -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=AVR;RISCV
 -DPERL_EXECUTABLE=$(which perl)
 -DLLVM_ENABLE_FFI=ON
+-DANDROID_NDK_VERSION=${TERMUX_NDK_VERSION_NUM}
 "
 
 if [ $TERMUX_ARCH_BITS = 32 ]; then
@@ -83,11 +84,6 @@ termux_step_host_build() {
 }
 
 termux_step_pre_configure() {
-	echo "Applying patch: compiler-rt-ndk-version.diff"
-	sed "s%\@TERMUX_NDK_VERSION_NUM\@%${TERMUX_NDK_VERSION_NUM}%g" \
-		"$TERMUX_PKG_BUILDER_DIR/compiler-rt-ndk-version.diff" | \
-		patch --silent -p1
-
 	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
@@ -131,11 +127,6 @@ termux_step_post_make_install() {
 	for tool in clang clang++ cc c++ cpp gcc g++ ${TERMUX_HOST_PLATFORM}-{clang,clang++,gcc,g++,cpp}; do
 		ln -f -s clang-${TERMUX_PKG_VERSION:0:2} $tool
 	done
-
-	cd $TERMUX_PREFIX/lib/clang/$TERMUX_PKG_VERSION/lib/
-	# Trying to build a program with -fsanitizer=address on device leads to an error
-	# due to clang looking for the libs in linux/ and not android/
-	mv android/ linux/
 }
 
 termux_step_post_massage() {

packages/libllvm/compiler-rt-ndk-version.diff

@@ -1,11 +0,0 @@
---- ../projects-compiler-rt-CMakeLists.txt.orig	2020-09-22 14:12:54.771097201 +0000
-+++ ./projects/compiler-rt/CMakeLists.txt	2020-09-22 16:11:07.568559345 +0000
-@@ -114,7 +114,7 @@
- endif()
- pythonize_bool(ANDROID)
- 
--set(ANDROID_NDK_VERSION 18
-+set(ANDROID_NDK_VERSION @TERMUX_NDK_VERSION_NUM@
-     CACHE STRING "Set this to the Android NDK version that you are using")
- 
- set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})

packages/libllvm/libcompiler-rt.subpackage.sh

@@ -1,13 +1,13 @@
 TERMUX_SUBPKG_DESCRIPTION="Compiler runtime libraries for clang"
 TERMUX_SUBPKG_INCLUDE="
-lib/clang/**/bin/asan_device_setup
-lib/clang/**/bin/hwasan_symbolize
-lib/clang/**/include/fuzzer/FuzzedDataProvider.h
-lib/clang/**/include/profile/InstrProfData.inc
-lib/clang/**/include/sanitizer/
-lib/clang/**/include/xray/
-lib/clang/**/lib/linux/
-lib/clang/**/share/asan_blacklist.txt
-lib/clang/**/share/cfi_blacklist.txt
-lib/clang/**/share/hwasan_blacklist.txt
+lib/clang/*/bin/asan_device_setup
+lib/clang/*/bin/hwasan_symbolize
+lib/clang/*/include/fuzzer/FuzzedDataProvider.h
+lib/clang/*/include/profile/InstrProfData.inc
+lib/clang/*/include/sanitizer/
+lib/clang/*/include/xray/
+lib/clang/*/lib/android/
+lib/clang/*/share/asan_blacklist.txt
+lib/clang/*/share/cfi_blacklist.txt
+lib/clang/*/share/hwasan_blacklist.txt
 "

packages/libllvm/tools-clang-lib-Driver-ToolChain.cpp.patch

@@ -1,6 +1,15 @@
-diff -u -r ../llvm-4.0.1.src/tools/clang/lib/Driver/ToolChain.cpp ./tools/clang/lib/Driver/ToolChain.cpp
---- ../llvm-4.0.1.src/tools/clang/lib/Driver/ToolChain.cpp	2016-12-14 17:46:50.000000000 +0100
-+++ ./tools/clang/lib/Driver/ToolChain.cpp	2017-07-13 12:35:02.862534376 +0200
+diff --git a/tools/clang/lib/Driver/ToolChain.cpp b/tools/clang/lib/Driver/ToolChain.cpp
+index 469ef62f1a9d..218f5af748f4 100644
+--- a/tools/clang/lib/Driver/ToolChain.cpp
++++ b/tools/clang/lib/Driver/ToolChain.cpp
+@@ -374,6 +374,6 @@ StringRef ToolChain::getOSLibName() const {
+   case llvm::Triple::Solaris:
+     return "sunos";
+   default:
+-    return getOS();
++    return Triple.isAndroid() ? "android":getOS();
+   }
+ }
 @@ -632,7 +632,7 @@
  
    switch (Type) {