!7 Make spec file support both system-version and multi-version

From: @cf-zhao 
Reviewed-by: @eastb233 
Signed-off-by: @eastb233

README.md

@@ -1,23 +1,8 @@
-# lld-15
+# lld
 
 #### 介绍
-LLVM Linker
+This package contains library and header files needed to develop new native
-
+programs that use the LLD infrastructure.
-#### 软件架构
-软件架构说明
-
-
-#### 安装教程
-
-1.  xxxx
-2.  xxxx
-3.  xxxx
-
-#### 使用说明
-
-1.  xxxx
-2.  xxxx
-3.  xxxx
 
 #### 参与贡献
 

lld.spec

@@ -1,21 +1,35 @@
-%bcond_without check
+%bcond_with sys_llvm
+%bcond_with check
 
-%global maj_ver 15
+%global maj_ver 12
 %global min_ver 0
-%global patch_ver 7
+%global patch_ver 1
 
+%if %{with sys_llvm}
+%global pkg_name lld
+%global bin_suffix %{nil}
+%global install_prefix %{_prefix}
+%else
 %global pkg_name lld%{maj_ver}
 %global bin_suffix -%{maj_ver}
 %global install_prefix %{_libdir}/llvm%{maj_ver}
-%global install_includedir %{install_prefix}/include
+%endif
-%global install_libdir %{install_prefix}/lib
+
 %global install_bindir %{install_prefix}/bin
-%global pkg_bindir %{install_bindir}
+%if 0%{?__isa_bits} == 64
+%global install_libdir %{install_prefix}/lib64
+%else
+%global install_libdir %{install_prefix}/lib
+%endif
+%global install_includedir %{install_prefix}/include
 
 # Don't include unittests in automatic generation of provides or requires.
 %global __provides_exclude_from ^%{_libdir}/lld/.*$
 %global __requires_exclude ^libgtest.*$
 
+# Disable LTO as this causes crash if gcc lto enabled.
+%define _lto_cflags %{nil}
+
 Name:		%{pkg_name}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}
 Release:	1
@@ -29,9 +43,15 @@ Patch1:		fedora-PATCH-lld-Import-compact_unwind_encoding.h-from-libu.patch
 
 BuildRequires:	clang
 BuildRequires:	cmake
+%if %{with sys_llvm}
+BuildRequires:  llvm-devel = %{version}
+BuildRequires:  llvm-googletest = %{version}
+BuildRequires:  llvm-test = %{version}
+%else
 BuildRequires:	llvm%{maj_ver}-devel = %{version}
 BuildRequires:	llvm%{maj_ver}-googletest = %{version}
 BuildRequires:	llvm%{maj_ver}-test = %{version}
+%endif
 BuildRequires:	ncurses-devel
 BuildRequires:	ninja-build
 BuildRequires:	python3-rpm-macros
@@ -76,8 +96,8 @@ cd _build
 	-DLLVM_INCLUDE_TESTS=ON \
 	-DLLVM_EXTERNAL_LIT=%{_bindir}/lit \
 	-DLLVM_LIT_ARGS="-sv \
-	--path %{_libdir}/llvm%{maj_ver}" \
+	--path %{install_prefix}" \
-	-DLLVM_MAIN_SRC_DIR=%{_libdir}/llvm%{maj_ver}/src
+	-DLLVM_MAIN_SRC_DIR=%{install_prefix}/src
 
 %ninja_build
 
@@ -86,13 +106,6 @@ cd _build
 
 rm %{buildroot}%{install_includedir}/mach-o/compact_unwind_encoding.h
 
-# Add version suffix to binaries
-mkdir -p %{buildroot}/%{_bindir}
-for f in %{buildroot}/%{install_bindir}/*; do
-  filename=`basename $f`
-  ln -s ../../%{install_bindir}/$filename %{buildroot}/%{_bindir}/$filename%{bin_suffix}
-done
-
 %check
 %if %{with check}
 cd _build
@@ -101,12 +114,7 @@ cd _build
 
 %files
 %license LICENSE.TXT
-%{_bindir}/lld%{bin_suffix}
+%{install_bindir}/*
-%{_bindir}/lld-link%{bin_suffix}
-%{_bindir}/ld.lld%{bin_suffix}
-%{_bindir}/ld64.lld%{bin_suffix}
-%{_bindir}/wasm-ld%{bin_suffix}
-%{pkg_bindir}
 
 %files devel
 %{install_includedir}/lld
@@ -117,11 +125,5 @@ cd _build
 %{install_libdir}/liblld*.so.*
 
 %changelog
-* Mon Feb 20 2023 Chenxi Mao <chenxi.mao@suse.com> - 15.0.7-1
+* Thu May 25 2023 cf-zhao <zhaochuanfeng@huawei.com> - 12.0.1-1
-- Upgrade to 15.0.7.
-
-* Thu Feb 9 2023 Chenxi Mao <chenxi.mao@suse.com> - 15.0.6-2
-- Enable lld unit test.
-
-* Mon Jan 2 2023 Chenxi Mao <chenxi.mao@suse.com> - 15.0.6-1
 - Package init