# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/clang/clang.conf
# Copyright (C) 2019 - 2024 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2.
# --- T2-COPYRIGHT-NOTE-END ---

#var_append cmakeopt -DPACKAGE_VENDOR=T2SDE
#var_append cmakeopt -DCLANG_VENDOR=T2SDE

cmake_mod() {
	tar $taropt `match_source_file -p cmake`
	mv -vf cmake-*src ../cmake
}
hook_add prepatch 5 cmake_mod

extra_tools() {
	tar $taropt `match_source_file -p extra`
	ln -s clang-tools-extra{-*,}
}
hook_add prepatch 5 extra_tools

[ $arch = powerpc -o "$SDECFG_POWERPC64_32" = 1 ] &&
	var_append patchfiles " " "$confdir/no-clang-tidy.diff"

# currently clang uses the default target from llvm
#var_append cmakeopt " " "-DCLANG_DEFAULT_TARGET_TRIPLE=$arch_target"

[ $SDECFG_DEFAULT_CC = 'clang' ] && ! pkginstalled gcc &&
	var_append cmakeopt " " \
	"-DCLANG_DEFAULT_CXX_STDLIB=libc++ \
	-DCLANG_DEFAULT_RTLIB=compiler-rt \
	-DCLANG_DEFAULT_UNWINDLIB=libunwind"

clang_postmake() {
	# force a tools rebuild
	rm -fv $base/build/$SDECFG_ID/TOOLCHAIN/$toolsdir/.lastupdate

	# create various symlinks for cc, c++, cpp and f77
	if atstage toolchain; then
		# TODO: or probably better program name transform?
		ln -sfv clang $root/$prefix/bin/${arch_target}-clang
		ln -sfv clang++ $root/$prefix/bin/${arch_target}-clang++

		for x in $([ "$SDECFG_DEFAULT_CC" = clang ] && echo cc
			[ "$SDECFG_DEFAULT_CXX" = clang ] && echo c++
			[ "$SDECFG_DEFAULT_KCC" = clang ] && echo kcc); do
			[ $x != c++ ] &&
				ln -svf ${arch_target}-clang $root/$prefix/bin/${arch_target}-$x ||
				ln -svf ${arch_target}-clang++ $root/$prefix/bin/${arch_target}-$x
		done

		# install some internal helper tools for cross bootstrap
		[ -e bin/clang-tidy-confusable-chars-gen ] &&
			install bin/clang-tidy-confusable-chars-gen $root$bindir/
		install bin/clang-tblgen $root$bindir/
		install bin/clang-pseudo-gen $root$bindir/
	
		return
	fi

	# TODO: cpp?
	for x in $([ "$SDECFG_DEFAULT_CC" = clang ] && echo cc
		[ "$SDECFG_DEFAULT_CXX" = clang ] && echo c++
		[ "$SDECFG_DEFAULT_KCC" = clang ] && echo kcc); do
		[ $x != c++ ] && ln -svf clang $root/$prefix/bin/$x || ln -svf clang++ $root/$prefix/bin/$x
	done
}
hook_add postmake 5 "clang_postmake"

if atstage toolchain; then
	var_append cmakeopt " " "-DDEFAULT_SYSROOT=$sysroot"
elif atstage cross; then
	var_append cmakeopt " " "-DCLANG_TABLEGEN=$root/TOOLCHAIN/$toolsdir/bin/clang-tblgen"
	var_append cmakeopt " " "-DCLANG_TIDY_CONFUSABLE_CHARS_GEN=$root/TOOLCHAIN/$toolsdir/bin/clang-tidy-confusable-chars-gen"
	var_append cmakeopt " " "-DCLANG_PSEUDO_GEN=$root/TOOLCHAIN/$toolsdir/bin/clang-pseudo-gen"

	var_append cmakeopt " " "-DLLVM_MAIN_INCLUDE_DIR=$root$includedir"
	#var_append cmakeopt " " "-DLLVM_LIBRARY_DIR=$root$libdir"
	var_append GCC_WRAPPER_REMOVE ' ' "-L$sysroot/TOOLCHAIN/cross/lib"
	var_append GCC_WRAPPER_FILTER '|' "sed 's,$root/TOOLCHAIN.*libLLVM\(.*\)\.[as].*,-lLLVM\1,g'"
	var_append GCC_WRAPPER_FILTER '|' "sed 's,^/lib64/libcurses.so,-lcurses,'"
	var_append GCC_WRAPPER_FILTER '|' "sed 's,$root/lib64/libcurses.so,-lcurses,'"
fi

# rencent clang enfores the same suffix as llvm-config, ...
#[ "${libdir##*/lib}" ] && var_append cmakeopt " " "-DLLVM_LIBDIR_SUFFIX=${libdir##*/lib}"
var_append cmakeopt " " "-DLIBCLANG_BUILD_STATIC=OFF -DBUILD_SHARED_LIBS=ON -DLLVM_INCLUDE_TESTS=OFF"