#%%define _disable_ld_no_undefined 0
#%%define debugcflags %%{nil}

# clang header paths are hard-coded at compile time
# and need adjustment whenever there's a new GCC version
%define gcc_version %(gcc -dumpversion)

%define compile_apidox 0
%{?_with_apidox: %{expand: %%global compile_apidox 1}}

%bcond_without clang

%define maj_ver 9
%define major_ver %{maj_ver}.0
%define minor_ver 0

%define major %{major_ver}
%define lto_major %{maj_ver}
%define libname %mklibname %{name} %{major}
%define liblto %mklibname lto %{lto_major}
%define devname %mklibname %{name} -d

%define clang_major %{major_ver}
%define libclang %mklibname clang %{clang_major}
%define devclang %mklibname clang -d

%bcond_with git

Summary:	Low Level Virtual Machine (LLVM)
Name:		llvm
Version:	%{major_ver}.%{minor_ver}
Release:	4
License:	NCSA
Group:		Development/Other
Url:		http://llvm.org

%if %{with git}
Source0:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/llvm-%{version}.src.tar.xz
Source1:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/cfe-%{version}.src.tar.xz
Source2:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/clang-tools-extra-%{version}.src.tar.xz
Source3:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/polly-%{version}.src.tar.xz
Source4:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/compiler-rt-%{version}.src.tar.xz
%else
Source0:	http://releases.llvm.org/%{version}/llvm-%{version}.src.tar.xz
Source1:	http://releases.llvm.org/%{version}/cfe-%{version}.src.tar.xz
Source2:	http://releases.llvm.org/%{version}/clang-tools-extra-%{version}.src.tar.xz
Source3:	http://releases.llvm.org/%{version}/polly-%{version}.src.tar.xz
Source4:	http://releases.llvm.org/%{version}/compiler-rt-%{version}.src.tar.xz
%endif
Source1000:	llvm.rpmlintrc
Source1010:	clang-gcc-wrapper.macros
Source1011:	clang-gcc-wrapper.sh

# Adjust the search paths to match the OS, adjust the default compiler flags
# as well.
Patch1:		clang-rosa.patch
#
Patch2:		cfe-7.0.0-i586-unknown-linux-gnu.patch
# https://bugs.gentoo.org/708430
Patch3:		compiler-rt-sanitizers-9.0.1-glibc-2.31.patch

BuildRequires:	binutils-devel
BuildRequires:	bison
BuildRequires:	chrpath
BuildRequires:	cmake
BuildRequires:	flex
BuildRequires:	graphviz
BuildRequires:	groff
BuildRequires:	libstdc++-devel
BuildRequires:	libtool
BuildRequires:	pkgconfig(libffi)
BuildRequires:	pkgconfig(libtirpc)
BuildRequires:	sed
BuildRequires:	tcl
BuildRequires:	zip
%if %{compile_apidox}
BuildRequires:	doxygen
%endif
Requires:	libstdc++-devel

%description
LVM is a robust system, particularly well suited for developing new mid-level
language-independent analyses and optimizations of all sorts, including those
that require  extensive interprocedural analysis. LLVM is also a great target
for front-end development for conventional or research programming languages,
including those which require compile-time, link-time, or run-time optimization
for effective implementation, proper tail calls or garbage collection.

%files
%doc LICENSE.TXT
%{_bindir}/bugpoint
%{_bindir}/dsymutil
%{_bindir}/find-all-symbols
%{_bindir}/llc
%{_bindir}/lli
%{_bindir}/llvm*
%exclude %{_bindir}/llvm-config
%{_bindir}/modularize
%{_bindir}/obj2yaml
%{_bindir}/opt
%{_bindir}/sancov
%{_bindir}/sanstats
%{_bindir}/verify-uselistorder
%{_bindir}/yaml2obj
%{_datadir}/opt-viewer

#----------------------------------------------------------------------------

%define plugins %mklibname %{name}-plugins

%package -n %{plugins}
Summary:	LLVM plugins
Group:		System/Libraries
Provides:	%{name}-plugins = %{EVRD}
Conflicts:	%{_lib}llvm3.8 < 3.8.0-2
Conflicts:	%{_lib}llvm-devel < 3.8.0-2

%description -n %{plugins}
LLVM plugins.

%files -n %{plugins}
%{_libdir}/BugpointPasses.so
%{_libdir}/CheckerDependencyHandlingAnalyzerPlugin.so
%{_libdir}/CheckerOptionHandlingAnalyzerPlugin.so
%{_libdir}/LLVMHello.so
%{_libdir}/LLVMgold.so
%{_libdir}/SampleAnalyzerPlugin.so

#----------------------------------------------------------------------------

%package -n %{libname}
Summary:	LLVM shared libraries
Group:		System/Libraries
Requires:	%{plugins}
Conflicts:	llvm < 3.0-4

%description -n %{libname}
Shared libraries for the LLVM compiler infrastructure. This is needed by
programs that are dynamically linked against libLLVM.

%files -n %{libname}
%{_libdir}/libLLVM-%{maj_ver}.so
%{_libdir}/libLLVM-%{major}.%{minor_ver}.so

#----------------------------------------------------------------------------

%package -n %{liblto}
Summary:	LLVM shared library
Group:		System/Libraries
Conflicts:	%{_lib}llvm-plugins < 6.0.0-3

%description -n %{liblto}
Shared library for the LLVM compiler infrastructure.

%files -n %{liblto}
%{_libdir}/libLTO.so.%{lto_major}*

#----------------------------------------------------------------------------

%package -n %{devname}
Summary:	Development files for LLVM
Group:		Development/Other
Provides:	llvm-devel = %{EVRD}
Requires:	%{libname} = %{EVRD}
Requires:	%{liblto} = %{EVRD}
Requires:	%{name} = %{EVRD}
Requires:	llvm-polly = %{EVRD}

Obsoletes:	llvm-polly-devel < %{EVRD}
Provides:	llvm-polly-devel = %{EVRD}

Conflicts:	llvm < 3.0-7
Conflicts:	%{_lib}llvm3.0 < 3.0-9
Conflicts:	%{_lib}llvm-plugins < 6.0.0-3

%description -n %{devname}
This package contains the development files for LLVM.

%files -n %{devname}
%{_bindir}/%{name}-config
%{_includedir}/%{name}
%{_includedir}/%{name}-c
%{_includedir}/polly
%{_libdir}/cmake/%{name}/*
%{_libdir}/cmake/polly/*.cmake
%{_libdir}/libLLVM*.a
%{_libdir}/libLLVM.so
%{_libdir}/libLTO.so
%{_libdir}/libRemarks.so*
%{_libdir}/libPolly*.a
%{_libdir}/libfindAllSymbols.a

#----------------------------------------------------------------------------

%package doc
Summary:	Documentation for LLVM
Group:		Books/Computer books
Requires:	%{name} = %{EVRD}
BuildArch:	noarch

%description doc
Documentation for the LLVM compiler infrastructure.

%files doc
%doc README.txt
%doc docs/tutorial
%doc examples
%if %{compile_apidox}
%doc docs/doxygen
%endif

#----------------------------------------------------------------------------

%package polly
Summary:	Polyhedral optimizations for LLVM
License:	MIT
Group:		Development/Other

%description polly
Polly is a polyhedral optimizer for LLVM.

Using an abstract mathematical representation it analyzes and optimizes
the memory access pattern of a program. This includes data-locality
optimizations for cache locality as well as automatic parallelization
for thread-level and SIMD parallelism.

Our overall goal is an integrated optimizer for data-locality and
parallelism that takes advantage of multi-cores, cache hierarchies,
short vector instructions as well as dedicated accelerators.

%files polly
%{_bindir}/pollycc
%{_bindir}/pollyc++
%{_libdir}/LLVMPolly.so

#----------------------------------------------------------------------------

%if %{with clang}
# TODO: %%{_bindir}/clang is linked against static libclang.a, could it be
# linked against libclang.so instead, like llvm-* are against livLLVM.so?

%package -n clang
Summary:	A C language family front-end for LLVM
License:	NCSA
Group:		Development/Other
# TODO: is this requires:llvm needed, or just legacy from fedora pkg layout?
Requires:	llvm = %{EVRD}
# clang requires gcc, clang++ requires libstdc++-devel
Requires:	gcc
Requires:	libstdc++-devel >= %{gcc_version}

%description -n clang
clang: noun
    1. A loud, resonant, metallic sound.
    2. The strident call of a crane or goose.
    3. C-language family front-end toolkit.

The goal of the Clang project is to create a new C, C++, Objective C
and Objective C++ front-end for the LLVM compiler. Its tools are built
as libraries and designed to be loosely-coupled and extensible.

%files -n clang
%{_bindir}/c-index-test
%{_bindir}/clang*
%{_bindir}/diagtool
%{_bindir}/hmaptool
%{_datadir}/clang/bash-autocomplete.sh
%{_datadir}/clang/clang-gcc-wrapper.sh
%{_datadir}/clang/clang-include-fixer.el
%{_datadir}/clang/clang-include-fixer.py
%{_datadir}/clang/clang-rename.el
%{_datadir}/clang/clang-rename.py
%{_datadir}/clang/clang-tidy-diff.py
%{_datadir}/clang/run-clang-tidy.py
%{_datadir}/clang/run-find-all-symbols.py
%{_datadir}/clang/__pycache__/clang-rename.cpython-38.opt-1.pyc
%{_datadir}/clang/__pycache__/clang-rename.cpython-38.pyc
%{_datadir}/clang/__pycache__/clang-tidy-diff.cpython-38.opt-1.pyc
%{_datadir}/clang/__pycache__/clang-tidy-diff.cpython-38.pyc
%{_datadir}/clang/__pycache__/run-clang-tidy.cpython-38.opt-1.pyc
%{_datadir}/clang/__pycache__/run-clang-tidy.cpython-38.pyc
%{_rpmmacrodir}/*clang-gcc-wrapper*
%endif

#----------------------------------------------------------------------------

%if %{with clang}
%package -n %{libclang}
Summary:	Shared library for clang
Group:		System/Libraries

%description -n %{libclang}
Shared libraries for the clang compiler. This is needed by
programs that are dynamically linked against libclang.

%files -n %{libclang}
%{_libdir}/clang/
%{_libdir}/libclang*.so.%{maj_ver}
%endif

#----------------------------------------------------------------------------

%if %{with clang}
%package -n %{devclang}
Summary:	Development files for clang
Group:		Development/Other
Requires:	%{libclang} = %{EVRD}
Provides:	clang-devel = %{EVRD}
Conflicts:	llvm-devel < 3.1
Obsoletes:	clang-devel < 3.1

%description -n %{devclang}
This package contains header files and libraries needed for using
libclang.

%files -n %{devclang}
%dir %{_datadir}/clang/
%{_includedir}/clang
%{_includedir}/clang-c
%{_libdir}/cmake/clang/ClangConfig.cmake
%{_libdir}/cmake/clang/ClangTargets-relwithdebinfo.cmake
%{_libdir}/cmake/clang/ClangTargets.cmake
%{_libdir}/libclang*.a
%{_libdir}/libclang*.so
%endif

#----------------------------------------------------------------------------

%if %{with clang}
%package -n clang-analyzer
Summary:	A source code analysis framework
License:	NCSA
Group:		Development/Other
Requires:	clang = %{EVRD}
# not picked up automatically since files are currently not instaled
# in standard Python hierarchies yet
Requires:	python3

%description -n clang-analyzer
The Clang Static Analyzer consists of both a source code analysis
framework and a standalone tool that finds bugs in C and Objective-C
programs. The standalone tool is invoked from the command-line, and is
intended to run in tandem with a build of a project or code base.

%files -n clang-analyzer
%{_bindir}/scan-build
%{_bindir}/scan-view
%{_datadir}/scan-build/
%{_datadir}/scan-view/
%{_mandir}/man1/scan-build.1.*
%{_prefix}/libexec/c++-analyzer
%{_prefix}/libexec/ccc-analyzer
%endif

#----------------------------------------------------------------------------

%prep
%setup -qn %{name}-%{version}.src %{?with_clang:-a1 -a2 -a3 -a4}
rm -rf tools/clang
%if %{with clang}
mv cfe-%{version}.src tools/clang
mv polly-%{version}.src tools/polly
mv clang-tools-extra-%{version}.src tools/clang/tools/extra
mv compiler-rt-%{version}.src projects/compiler-rt
cd tools/clang
%patch1 -p1 -b .rosa~
%patch2 -p1 -b .gnu~
cd -
%endif
%patch3 -p1 -b .c-rt~

%build
%global optflags %{optflags} -fno-strict-aliasing
# Build with gcc/g++, not clang if it happens to be installed
export CC=gcc
export CXX=g++

# A couple more fixes from OMV + a workaround for a bug (?) in GCC 4.9:
# https://llvm.org/bugs/show_bug.cgi?id=20080 and
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61659
# (-fno-devirtualize)
#
# compiler-rt assumes off_t is 64 bits -- make sure this is true even on
# 32 bit OSes
%ifarch %ix86
# compiler-rt doesn't support ix86 with x<6 either
export CFLAGS="%{optflags} -march=i686 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64 -g1"
export CXXFLAGS="%{optflags} -march=i686 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64 -fno-devirtualize -g1 -Wno-redundant-move"
%else
export CXXFLAGS="%{optflags} -fno-devirtualize -g1 -Wno-redundant-move"
%endif


%ifarch %ix86
# Fix noexecstack
for i in projects/compiler-rt/lib/builtins/i386/*.S; do
	cat >>$i <<'EOF'
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack,"",%progbits
#endif
EOF
done
%endif

%cmake \
	-DCMAKE_BUILD_TYPE=RelWithDebInfo \
	-DBUILD_SHARED_LIBS:BOOL=OFF \
	-DLLVM_LIBDIR_SUFFIX=$(echo %{_lib} | sed -e 's,^lib,,') \
%if %{with clang}
	-DCLANG_LIBDIR_SUFFIX=$(echo %{_lib} | sed -e 's,^lib,,') \
	-DWITH_POLLY:BOOL=ON \
	-DLINK_POLLY_INTO_TOOLS:BOOL=ON	\
%endif
	-DLLVM_ENABLE_FFI:BOOL=ON \
	-DLLVM_ENABLE_RTTI:BOOL=ON \
	-DLLVM_BINUTILS_INCDIR=%{_includedir} \
	-DLLVM_INCLUDE_UTILS:BOOL=ON \
	-DLLVM_BUILD_LLVM_DYLIB=ON \
	-DLLVM_LINK_LLVM_DYLIB=ON \
	-DOCAMLFIND=NOTFOUND \
%if %{compile_apidox}
	-DLLVM_INCLUDE_DOCS:BOOL=ON \
	-DLLVM_BUILD_DOCS:BOOL=ON \
%endif
	-DLLVM_OPTIMIZED_TABLEGEN=ON

%make -s

%install

%makeinstall_std -C build

%if %{with clang}
# [From OMV]
# Polly bits as described on
# http://polly.llvm.org/example_load_Polly_into_clang.html
cat >%{buildroot}%{_bindir}/pollycc <<'EOF'
#!/bin/sh
exec %{_bindir}/clang -O3 -Xclang -load -Xclang %{_libdir}/LLVMPolly.so "$@"
EOF
cat >%{buildroot}%{_bindir}/pollyc++ <<'EOF'
#!/bin/sh
exec %{_bindir}/clang++ -O3 -Xclang -load -Xclang %{_libdir}/LLVMPolly.so "$@"
EOF
chmod 0755 %{buildroot}%{_bindir}/pollycc %{buildroot}%{_bindir}/pollyc++


# Clang - Git integration. Not needed.
	rm -f %{buildroot}%{_bindir}/git-clang-format

# Remove editor integration files
	rm -f %{buildroot}%{_datadir}/clang/clang-format*

# install clang-gcc-wrapper
install -D -m 0644 %{SOURCE1011} %{buildroot}%{_datadir}/clang/
%install_macro clang-gcc-wrapper %{SOURCE1010}
%endif

# Install libraries used for testing
cp -a build/%{_lib}/BugpointPasses.so %{buildroot}%{_libdir}
cp -a build/%{_lib}/LLVMHello.so %{buildroot}%{_libdir}

# Versionize shebangs python
sed '1 s,^.*$,#!%{__python3},' -i %{buildroot}%{_bindir}/{hmaptool,scan-view}