#
# spec file for package go
#
# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.

# Please submit bugfixes or comments via http://bugs.opensuse.org/
#
# nodebuginfo


# strip will cause Go's .a archives to become invalid because strip appears to
# reassemble the archive incorrectly. This is a known issue upstream
# (https://github.com/golang/go/issues/17890), but we have to deal with it in
# the meantime.
%define __arch_install_post export NO_BRP_STRIP_DEBUG=true

# By default use go and not gccgo
%define with_gccgo 0

# The fallback boostrap method via go1.4 does not work for Factory because
# of a known bug with binutils 2.27 https://github.com/golang/go/issues/16906.
# Leap will work but we don't have go1.4 in there.
%if 0%{?suse_version} > 1320
# openSUSE Factory
%define with_gccgo 1
%else
%if 0%{?suse_version} == 1315 && 0%{?is_opensuse}
# openSUSE Leap
%define with_gccgo 1
%endif
%endif

# The fallback bootstrap method via go1.4 doesn't work
# for aarch64 nor ppc64le because go 1.4 did not support that architecture.
%ifarch aarch64 ppc64le ppc64 s390x
%define with_gccgo 1
%endif

# By default we don't include tsan. It's only supported on amd64.
%define tsan_arch x86_64

# Go has precompiled versions of LLVM's compiler-rt inside their source code.
# We cannot ship pre-compiled binaries so we have to recompile said source,
# however they vendor specific commits from upstream. This value comes from
# src/runtime/race/README (and we verify that it matches in check).
# See boo#1052528 for more details.
%define tsan_commit 68e1532492f9b3fce0e9024f3c31411105965b11

%define go_api 1.8

# shared library support
%define shared_supported %(echo "%{go_api} >= 1.5" | bc -l)
%if %{shared_supported}
%if %{with_gccgo}
%define with_shared 1
%else
%ifarch %ix86 %arm x86_64 aarch64
%define with_shared 1
%else
%define with_shared 0
%endif
%endif
%else
%define with_shared 0
%endif
%ifarch ppc64
%define with_shared 0
%endif

Name:           go
Version:        1.8.3
Release:        0
Summary:        A compiled, garbage-collected, concurrent programming language
License:        BSD-3-Clause
Group:          Development/Languages/Other
Url:            http://golang.org
Source:         http://golang.org/dl/go%{version}.src.tar.gz
Source1:        go-rpmlintrc
Source2:        go.sh
Source4:        README.SUSE
Source6:        go.gdbinit
# We have to compile TSAN ourselves. boo#1052528
Source100:      compiler-rt-g%{tsan_commit}.tar.xz
# PATCH-FIX-OPENSUSE add -s flag to 'go install' (don't rebuild/install std libs)
Patch1:         go-1.5-build-dont-reinstall-stdlibs.patch
# PATCH-FIX-OPENSUSE re-enable build binary only packages (we are binary distro)
# see http://code.google.com/p/go/issues/detail?id=2775 & also issue 3268
Patch2:         allow-binary-only-packages.patch
#PATCH-FIX-OPENSUSE use -x verbose build output for qemu-arm builders
Patch3:         verbose-build.patch
# PATCH-FIX-OPENSUSE BNC#776058
Patch4:         go-1.5-install-dont-reinstall-stdlibs.patch
# PATCH-FIX-OPENSUSE enable writing tools outside $GOROOT/pkg/tool for packaging
Patch5:         tools-packaging.patch
# armv6l needs this patch for our build system
# see https://groups.google.com/forum/#!topic/golang-nuts/MqKTX_XIOKE
Patch6:         armv6l.patch
# PATCH-FIX-OPENSUSE fix_certificates_lookup.patch fcastelli@suse.com -- this patch forces Go to look for certificates only in the openSUSE/SLE locations. It also fixes certificate loading on SLE11, see https://github.com/golang/go/issues/6391
# PATCH-FIX-SUSE fix_certificates_lookup.patch fcastelli@suse.com -- this patch forces Go to look for certificates only in the openSUSE/SLE locations. It also fixes certificate loading on SLE11, see https://github.com/golang/go/issues/6391
Patch7:         fix_certificates_lookup.patch
# PATCH-FIX-UPSTREAM marguerite@opensuse.org - find /usr/bin/go-5 when bootstrapping with gcc5-go
Patch8:         gcc6-go.patch
Patch9:         gcc7-go.patch
# PATCH-FIX-OPENSUSE: Bump _MaxGomaxprocs to a larger number for NUMA machines.
Patch10:        runtime-bump-MaxGomaxprocs.patch
BuildRoot:      %{_tmppath}/%{name}-%{version}-build
# boostrap
%if %{with_gccgo}
%ifnarch s390 s390x
BuildRequires:  binutils-gold
%endif
%if 0%{?suse_version} == 1315
# SLE12 or Leap 42.x
BuildRequires:  gcc6-go
%else
BuildRequires:  gcc7-go
%endif
%else
# no gcc-go
BuildRequires:  go1.4
%endif
BuildRequires:  fdupes
BuildRequires:  systemd
Recommends:     go-doc = %{version}
%ifarch %{tsan_arch}
# Needed to compile compiler-rt/TSAN.
BuildRequires:  gcc-c++
%endif
#BNC#818502 debug edit tool of rpm fails on i586 builds
BuildRequires:  bc
BuildRequires:  rpm >= 4.11.1
# for go.gdbinit, directory ownership
BuildRequires:  gdb
Requires(post):	update-alternatives
Requires(postun):	update-alternatives
Requires:       gcc
Provides:       go = %{version}
Provides:       go-devel = go%{version}
Provides:       go-devel-static = go%{version}
Provides:       golang(API) = %{go_api}
Obsoletes:      go-devel < go%{version}
# go-vim/emacs were separate projects starting from 1.4
Obsoletes:      go-emacs <= 1.3.3
Obsoletes:      go-vim <= 1.3.3
ExclusiveArch:  %ix86 x86_64 aarch64 ppc64 ppc64le s390x

%description
Go is an expressive, concurrent, garbage collected systems programming language
that is type safe and memory safe. It has pointers but no pointer arithmetic.
Go has fast builds, clean syntax, garbage collection, methods for any type, and
run-time reflection. It feels like a dynamic language but has the speed and
safety of a static language.

%package doc
Summary:        Go documentation
License:        BSD-3-Clause
Group:          Documentation/Other
Requires:       go = %{version}
Provides:       go-doc = %{version}

%description doc
Go examples and documentation.

%ifarch %{tsan_arch}
# boo#1052528
%package race
Summary:        Go runtime race detector
License:        NCSA or MIT
Group:          Development/Languages/Other
Url:            https://compiler-rt.llvm.org/
Requires:       go = %{version}
Supplements:    go
ExclusiveArch:  %{tsan_arch}

%description race
Go runtime race detector libraries. Install this package if you wish to use the
-race option, in order to detect race conditions present in your Go programs.
%endif

%prep
%ifarch %{tsan_arch}
# compiler-rt
%setup -q -T -b 100 -n compiler-rt-g%{tsan_commit}
%endif
# go
%setup -q -n go
%patch1 -p1
%patch2 -p1
%patch3 -p1
%patch4 -p1
%patch5 -p1
%ifarch armv6hl
%patch6 -p1
%endif
%patch7 -p1
%if %{with_gccgo}
%if 0%{?suse_version} == 1315
# SLE12 or Leap 42.x
%patch8 -p1
%else
%patch9 -p1
%endif
%endif
%patch10 -p1
cp %{SOURCE4} .

# setup go_arch (BSD-like scheme)
%ifarch %ix86
%define go_arch 386
%endif
%ifarch x86_64
%define go_arch amd64
%endif
%ifarch aarch64
%define go_arch arm64
%endif
%ifarch %arm
%define go_arch arm
%endif
%ifarch ppc64
%define go_arch ppc64
%endif
%ifarch ppc64le
%define go_arch ppc64le
%endif
%ifarch s390x
%define go_arch s390x
%endif

%build
# Remove the pre-included .sysos, to avoid shipping things we didn't compile
# (which is against the openSUSE guidelines for packaging).
find . -type f -name '*.syso' -exec rm -vf {} \;

# First, compile LLVM's TSAN, and replace the built-in with it. We can only do
# this for amd64.
%ifarch %{tsan_arch}
pushd ../compiler-rt*/lib/tsan/go
./buildgo.sh
popd
cp ../compiler-rt*/lib/tsan/go/race_linux_%{go_arch}.syso src/runtime/race/race_linux_%{go_arch}.syso
%endif

# Now, compile Go.
%if %{with_gccgo}
export GOROOT_BOOTSTRAP=%{_prefix}
%else
export GOROOT_BOOTSTRAP=%{_libdir}/go1.4
%endif
export GOROOT="`pwd`"
export GOROOT_FINAL=%{_libdir}/go/%{go_api}
export GOBIN="$GOROOT/bin"
mkdir -p "$GOBIN"
cd src
HOST_EXTRA_CFLAGS="%{optflags} -Wno-error" ./make.bash

cd ../
%ifarch %{tsan_arch}
# Install TSAN-friendly version of the std libraries.
bin/go install -race std
%endif

%if %{with_shared}
bin/go install -buildmode=shared -linkshared std
%endif

%check
%ifarch %{tsan_arch}
# Make sure that we have the right TSAN checked out.
grep "%{tsan_commit}" src/runtime/race/README
%endif

%install
export GOROOT="%{buildroot}%{_libdir}/go/%{go_api}"
install -Dm644 %{SOURCE2} $GOROOT/bin/profile.d/go.sh
sed -i "s/\$go_api/%{go_api}/" $GOROOT/bin/profile.d/go.sh

# locations for third party libraries, see README-openSUSE for info about locations.
install -d  %{buildroot}%{_datadir}/go/%{go_api}/contrib
install -d  $GOROOT/contrib/pkg/linux_%{go_arch}
ln -s %{_libdir}/go/%{go_api}/contrib/pkg/ %{buildroot}%{_datadir}/go/%{go_api}/contrib/pkg
install -d  %{buildroot}%{_datadir}/go/%{go_api}/contrib/cmd
install -d  %{buildroot}%{_datadir}/go/%{go_api}/contrib/src
ln -s %{_datadir}/go/%{go_api}/contrib/src/ %{buildroot}%{_libdir}/go/%{go_api}/contrib/src
install -Dm644 README.SUSE $GOROOT/contrib/
ln -s %{_libdir}/go/%{go_api}/contrib/README.SUSE %{buildroot}%{_datadir}/go/%{go_api}/contrib/README.SUSE

# source files for go install, godoc, etc
install -d %{buildroot}%{_datadir}/go/%{go_api}
for ext in *.{go,c,h,s,S,py,syso}; do
  find src -name ${ext} -exec install -Dm644 \{\} %{buildroot}%{_datadir}/go/%{go_api}/\{\} \;
done
mkdir -p $GOROOT/src
for i in $(ls %{buildroot}/usr/share/go/%{go_api}/src);do
  ln -s /usr/share/go/%{go_api}/src/$i $GOROOT/src/$i
done

# copy document templates, packages, obj libs and command utilities
mkdir -p $GOROOT/bin
mkdir -p $GOROOT/lib
# remove bootstrap
rm -rf pkg/bootstrap
mv pkg $GOROOT
mv bin/* $GOROOT/bin
rm -f %{buildroot}%{_bindir}/{hgpatch,quietgcc}

# gdbinit
install -Dm644 %{SOURCE6} $GOROOT/bin/gdbinit.d/go.gdb
%if "%{_lib}" == "lib64"
sed -i "s/lib/lib64/" $GOROOT/bin/gdbinit.d/go.gdb
sed -i "s/\$go_api/%{go_api}/" $GOROOT/bin/gdbinit.d/go.gdb
%endif

# update-alternatives
 mkdir -p %{buildroot}%{_sysconfdir}/alternatives
 mkdir -p %{buildroot}%{_bindir}
 mkdir -p %{buildroot}%{_sysconfdir}/profile.d
 mkdir -p %{buildroot}%{_sysconfdir}/gdbinit.d
 touch %{buildroot}%{_sysconfdir}/alternatives/{go,gofmt,go.sh,go.gdb}
 ln -sf %{_sysconfdir}/alternatives/go %{buildroot}%{_bindir}/go
 ln -sf %{_sysconfdir}/alternatives/gofmt %{buildroot}%{_bindir}/gofmt
 ln -sf %{_sysconfdir}/alternatives/go.sh %{buildroot}%{_sysconfdir}/profile.d/go.sh
 ln -sf %{_sysconfdir}/alternatives/go.gdb %{buildroot}%{_sysconfdir}/gdbinit.d/go.gdb

# documentation and examples
# fix documetation permissions (rpmlint warning)
find doc/ misc/ -type f -exec chmod 0644 '{}' \;
# remove unwanted arch-dependant binaries (rpmlint warning)
rm -rf misc/cgo/test/{_*,*.o,*.out,*.6,*.8}
# prepare go-doc
mkdir -p %{buildroot}%{_docdir}/go/%{go_api}
cp -r AUTHORS CONTRIBUTORS CONTRIBUTING.md LICENSE PATENTS README.md README.SUSE %{buildroot}%{_docdir}/go/%{go_api}
cp -r doc/* %{buildroot}%{_docdir}/go/%{go_api}

%fdupes -s %{buildroot}%{_prefix}

%post

update-alternatives \
	--install %{_bindir}/go go %{_libdir}/go/%{go_api}/bin/go 30 \
  --slave %{_bindir}/gofmt gofmt %{_libdir}/go/%{go_api}/bin/gofmt \
  --slave %{_sysconfdir}/gdbinit.d/go.gdb go.gdb %{_libdir}/go/%{go_api}/bin/gdbinit.d/go.gdb \
  --slave %{_sysconfdir}/profile.d/go.sh go.sh %{_libdir}/go/%{go_api}/bin/profile.d/go.sh

%postun
if [ $1 -eq 0 ] ; then
	update-alternatives --remove go %{_libdir}/go/%{go_api}/bin/go
fi

%files
%defattr(-,root,root,-)
%{_bindir}/go
%{_bindir}/gofmt
%{_libdir}/go
%{_libdir}/go/%{go_api}
%{_datadir}/go
%{_datadir}/go/%{go_api}
%ghost %{_sysconfdir}/profile.d/go.sh
%ghost %{_sysconfdir}/gdbinit.d/go.gdb
%ghost %{_sysconfdir}/alternatives/go
%ghost %{_sysconfdir}/alternatives/gofmt
%ghost %{_sysconfdir}/alternatives/go.sh
%ghost %{_sysconfdir}/alternatives/go.gdb
%dir %{_docdir}/go
%dir %{_docdir}/go/%{go_api}
%doc %{_docdir}/go/%{go_api}/AUTHORS
%doc %{_docdir}/go/%{go_api}/CONTRIBUTORS
%doc %{_docdir}/go/%{go_api}/CONTRIBUTING.md
%doc %{_docdir}/go/%{go_api}/LICENSE
%doc %{_docdir}/go/%{go_api}/PATENTS
%doc %{_docdir}/go/%{go_api}/README.md
%doc %{_docdir}/go/%{go_api}/README.SUSE
%doc %{_docdir}/go/%{go_api}/go%{go_api}.txt

# We don't include TSAN in the main Go package.
%ifarch %{tsan_arch}
%exclude %{_datadir}/go/%{go_api}/src/runtime/race/race_linux_%{go_arch}.syso
%endif

%files doc
%defattr(-,root,root,-)
%doc %{_docdir}/go/%{go_api}/codewalk
%doc %{_docdir}/go/%{go_api}/articles
%doc %{_docdir}/go/%{go_api}/progs
%doc %{_docdir}/go/%{go_api}/play
%doc %{_docdir}/go/%{go_api}/gopher
%doc %{_docdir}/go/%{go_api}/devel
%doc %{_docdir}/go/%{go_api}/*.html
%doc %{_docdir}/go/%{go_api}/*.css
%doc %{_docdir}/go/%{go_api}/*.png

%ifarch %{tsan_arch}
%files race
%defattr(-,root,root,-)
%{_datadir}/go/%{go_api}/src/runtime/race/race_linux_%{go_arch}.syso
%endif

%changelog