%bcond_with bootstrap
# temporalily ignore test failures
# due to https://github.com/golang/go/issues/39466
%ifarch aarch64
%bcond_without ignore_tests
%else
%bcond_with ignore_tests
%endif

# build ids are not currently generated:
# https://code.google.com/p/go/issues/detail?id=5238
#
# also, debuginfo extraction currently fails with
# "Failed to write file: invalid section alignment"
%global debug_package %{nil}

# we are shipping the full contents of src in the data subpackage, which
# contains binary-like things (ELF data for tests, etc)
%global _binaries_in_noarch_packages_terminate_build 0

# Do not check any files in doc or src for requires
%global __requires_exclude_from ^(%{_datadir}|/usr/lib)/%{name}/(doc|src)/.*$

# Don't alter timestamps of especially the .a files (or else go will rebuild later)
# Actually, don't strip at all since we are not even building debug packages and this corrupts the dwarf testdata
%global __strip /bin/true

# rpmbuild magic to keep from having meta dependency on libc.so.6
%define _use_internal_dependency_generator 0
%define __find_requires %{nil}
%global __spec_install_post /usr/lib/rpm/check-rpaths   /usr/lib/rpm/check-buildroot  \
  /usr/lib/rpm/brp-compress

%global golibdir %{_libdir}/golang

# This macro may not always be defined, ensure it is
%{!?gopath: %global gopath %{_datadir}/gocode}

# Golang build options.

# Build golang using external/internal(close to cgo disabled) linking.
%ifarch %{ix86} x86_64 ppc64le %{arm} aarch64 s390x
%global external_linker 1
%else
%global external_linker 0
%endif

# Build golang with cgo enabled/disabled(later equals more or less to internal linking).
%ifarch %{ix86} x86_64 ppc64le %{arm} aarch64 s390x
%global cgo_enabled 1
%else
%global cgo_enabled 0
%endif

# Use golang/gcc-go as bootstrap compiler
%if %{with bootstrap}
%global golang_bootstrap 0
%else
%global golang_bootstrap 1
%endif

# Controls what ever we fail on failed tests
%if %{with ignore_tests}
%global fail_on_tests 0
%else
%global fail_on_tests 1
%endif

# Build golang shared objects for stdlib
%ifarch %{ix86} x86_64 ppc64le %{arm} aarch64
%global shared 1
%else
%global shared 0
%endif

# Pre build std lib with -race enabled
%ifarch x86_64 ppc64le
%global race 1
%else
%global race 0
%endif

# Fedora GOROOT
%global goroot          /usr/lib/%{name}

%ifarch x86_64
%global gohostarch  amd64
%endif
%ifarch %{ix86}
%global gohostarch  386
%endif
%ifarch %{arm}
%global gohostarch  arm
%endif
%ifarch aarch64
%global gohostarch  arm64
%endif
%ifarch ppc64
%global gohostarch  ppc64
%endif
%ifarch ppc64le
%global gohostarch  ppc64le
%endif
%ifarch s390x
%global gohostarch  s390x
%endif

%global go_api 1.18.3
%global go_version %{go_api}

# For rpmdev-bumpspec and releng automation
%global baserelease 1

Name:           golang
Version:        %{go_version}
Release:        %{baserelease}%{?dist}
Summary:        The Go Programming Language
# source tree includes several copies of Mark.Twain-Tom.Sawyer.txt under Public Domain
License:        BSD and Public Domain
URL:            http://golang.org/
Source0:        https://storage.googleapis.com/golang/go%{go_version}.src.tar.gz
# make possible to override default traceback level at build time by setting build tag rpm_crashtraceback
Source1:        fedora.go

# The compiler is written in Go. Needs go(1.4+) compiler for build.
%if !%{golang_bootstrap}
BuildRequires:  gcc-go >= 5
%else
BuildRequires:  golang > 1.4
%endif
%if 0%{?rhel} > 6 || 0%{?fedora} > 0
BuildRequires:  hostname
%else
BuildRequires:  net-tools
%endif
# for tests
BuildRequires:  pcre-devel, glibc-static, procps-ng

Provides:       go = %{version}-%{release}

# Bundled/Vendored provides generated by bundled-deps.sh based on the in tree module data
# - in version filed substituted with . per versioning guidelines
Provides: bundled(golang(github.com/google/pprof)) = 0.0.0.20201203190320.1bf35d6f28c2
Provides: bundled(golang(github.com/ianlancetaylor/demangle)) = 0.0.0.20200824232613.28f6c0f3b639
Provides: bundled(golang(golang.org/x/arch)) = 0.0.0.20201008161808.52c3e6f60cff
Provides: bundled(golang(golang.org/x/crypto)) = 0.0.0.20201016220609.9e8e0b390897
Provides: bundled(golang(golang.org/x/mod)) = 0.4.1
Provides: bundled(golang(golang.org/x/net)) = 0.0.0.20201209123823.ac852fbbde11
Provides: bundled(golang(golang.org/x/sys)) = 0.0.0.20201204225414.ed752295db88
Provides: bundled(golang(golang.org/x/text)) = 0.3.4
Provides: bundled(golang(golang.org/x/tools)) = 0.0.0.20210107193943.4ed967dd8eff
Provides: bundled(golang(golang.org/x/xerrors)) = 0.0.0.20200804184101.5ec99f83aff1

Requires:       %{name}-bin = %{version}-%{release}
Requires:       %{name}-src = %{version}-%{release}
Requires:       go-srpm-macros

Patch1:       0001-Don-t-use-the-bundled-tzdata-at-runtime-except-for-t.patch
Patch2:       0002-syscall-expose-IfInfomsg.X__ifi_pad-on-s390x.patch
Patch3:       0003-cmd-go-disable-Google-s-proxy-and-sumdb.patch

# Having documentation separate was broken
Obsoletes:      %{name}-docs < 1.1-4

# RPM can't handle symlink -> dir with subpackages, so merge back
Obsoletes:      %{name}-data < 1.1.1-4

# go1.4 deprecates a few packages
Obsoletes:      %{name}-vim < 1.4
Obsoletes:      emacs-%{name} < 1.4

# These are the only RHEL/Fedora architectures that we compile this package for
ExclusiveArch:  %{golang_arches}

Source100:      golang-gdbinit

%description
%{summary}.

%package       docs
Summary:       Golang compiler docs
Requires:      %{name} = %{version}-%{release}
BuildArch:     noarch
Obsoletes:     %{name}-docs < 1.1-4

%description   docs
%{summary}.

%package       misc
Summary:       Golang compiler miscellaneous sources
Requires:      %{name} = %{version}-%{release}
BuildArch:     noarch

%description   misc
%{summary}.

%package       tests
Summary:       Golang compiler tests for stdlib
Requires:      %{name} = %{version}-%{release}
BuildArch:     noarch

%description   tests
%{summary}.

%package        src
Summary:        Golang compiler source tree
BuildArch:      noarch
%description    src
%{summary}

%package        bin
Summary:        Golang core compiler tools
# Some distributions refer to this package by this name
Provides:       %{name}-go = %{version}-%{release}
Requires:       go = %{version}-%{release}
# Pre-go1.5, all arches had to be bootstrapped individually, before usable, and
# env variables to compile for the target os-arch.
# Now the host compiler needs only the GOOS and GOARCH environment variables
# set to compile for the target os-arch.
Obsoletes:      %{name}-pkg-bin-linux-386 < 1.4.99
Obsoletes:      %{name}-pkg-bin-linux-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-bin-linux-arm < 1.4.99
Obsoletes:      %{name}-pkg-linux-386 < 1.4.99
Obsoletes:      %{name}-pkg-linux-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-linux-arm < 1.4.99
Obsoletes:      %{name}-pkg-darwin-386 < 1.4.99
Obsoletes:      %{name}-pkg-darwin-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-windows-386 < 1.4.99
Obsoletes:      %{name}-pkg-windows-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-plan9-386 < 1.4.99
Obsoletes:      %{name}-pkg-plan9-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-freebsd-386 < 1.4.99
Obsoletes:      %{name}-pkg-freebsd-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-freebsd-arm < 1.4.99
Obsoletes:      %{name}-pkg-netbsd-386 < 1.4.99
Obsoletes:      %{name}-pkg-netbsd-amd64 < 1.4.99
Obsoletes:      %{name}-pkg-netbsd-arm < 1.4.99
Obsoletes:      %{name}-pkg-openbsd-386 < 1.4.99
Obsoletes:      %{name}-pkg-openbsd-amd64 < 1.4.99

Obsoletes:      golang-vet < 0-12.1
Obsoletes:      golang-cover < 0-12.1

Requires(post): %{_sbindir}/update-alternatives
Requires(preun): %{_sbindir}/update-alternatives

# We strip the meta dependency, but go does require glibc.
# This is an odd issue, still looking for a better fix.
Requires:       glibc
Requires:       gcc
Requires:       git
#Requires:       subversion, mercurial
%description    bin
%{summary}

# Workaround old RPM bug of symlink-replaced-with-dir failure
%pretrans -p <lua>
for _,d in pairs({"api", "doc", "include", "lib", "src"}) do
  path = "%{goroot}/" .. d
  if posix.stat(path, "type") == "link" then
    os.remove(path)
    posix.mkdir(path)
  end
end

%if %{shared}
%package        shared
Summary:        Golang shared object libraries

%description    shared
%{summary}.
%endif

%if %{race}
%package        race
Summary:        Golang std library with -race enabled

Requires:       %{name} = %{version}-%{release}

%description    race
%{summary}
%endif

%prep
%autosetup -p1 -n go

cp %{SOURCE1} ./src/runtime/

%build
# print out system information
uname -a
cat /proc/cpuinfo
cat /proc/meminfo

# bootstrap compiler GOROOT
%if !%{golang_bootstrap}
export GOROOT_BOOTSTRAP=/
%else
export GOROOT_BOOTSTRAP=%{goroot}
%endif

# set up final install location
export GOROOT_FINAL=%{goroot}

export GOHOSTOS=linux
export GOHOSTARCH=%{gohostarch}

pushd src
# use our gcc options for this build, but store gcc as default for compiler
export CFLAGS="$RPM_OPT_FLAGS"
export LDFLAGS="$RPM_LD_FLAGS"
export CC="gcc"
export CC_FOR_TARGET="gcc"
export GOOS=linux
export GOARCH=%{gohostarch}
%if !%{external_linker}
export GO_LDFLAGS="-linkmode internal"
%endif
%if !%{cgo_enabled}
export CGO_ENABLED=0
%endif
./make.bash --no-clean -v
popd

# build shared std lib
%if %{shared}
GOROOT=$(pwd) PATH=$(pwd)/bin:$PATH go install -buildmode=shared -v -x std
%endif

%if %{race}
GOROOT=$(pwd) PATH=$(pwd)/bin:$PATH go install -race -v -x std
%endif

%install
echo "== 1 =="
rm -rf $RPM_BUILD_ROOT
# remove GC build cache
rm -rf pkg/obj/go-build/*

# create the top level directories
mkdir -p $RPM_BUILD_ROOT%{_bindir}
mkdir -p $RPM_BUILD_ROOT%{goroot}

# install everything into libdir (until symlink problems are fixed)
# https://code.google.com/p/go/issues/detail?id=5830
cp -apv api bin doc lib pkg src misc test VERSION \
   $RPM_BUILD_ROOT%{goroot}
echo "== 2 =="
# bz1099206
find $RPM_BUILD_ROOT%{goroot}/src -exec touch -r $RPM_BUILD_ROOT%{goroot}/VERSION "{}" \;
# and level out all the built archives
touch $RPM_BUILD_ROOT%{goroot}/pkg
find $RPM_BUILD_ROOT%{goroot}/pkg -exec touch -r $RPM_BUILD_ROOT%{goroot}/pkg "{}" \;
# generate the spec file ownership of this source tree and packages
cwd=$(pwd)
src_list=$cwd/go-src.list
pkg_list=$cwd/go-pkg.list
shared_list=$cwd/go-shared.list
race_list=$cwd/go-race.list
misc_list=$cwd/go-misc.list
docs_list=$cwd/go-docs.list
tests_list=$cwd/go-tests.list
rm -f $src_list $pkg_list $docs_list $misc_list $tests_list $shared_list $race_list
touch $src_list $pkg_list $docs_list $misc_list $tests_list $shared_list $race_list
pushd $RPM_BUILD_ROOT%{goroot}
  echo "== 3 =="
    find src/ -type d -a \( ! -name testdata -a ! -ipath '*/testdata/*' \) -printf '%%%dir %{goroot}/%p\n' >> $src_list
    find src/ ! -type d -a \( ! -ipath '*/testdata/*' -a ! -name '*_test.go' \) -printf '%{goroot}/%p\n' >> $src_list

    find bin/ pkg/ -type d -a ! -path '*_dynlink/*' -a ! -path '*_race/*' -printf '%%%dir %{goroot}/%p\n' >> $pkg_list
    find bin/ pkg/ ! -type d -a ! -path '*_dynlink/*' -a ! -path '*_race/*' -printf '%{goroot}/%p\n' >> $pkg_list

    find doc/ -type d -printf '%%%dir %{goroot}/%p\n' >> $docs_list
    find doc/ ! -type d -printf '%{goroot}/%p\n' >> $docs_list

    find misc/ -type d -printf '%%%dir %{goroot}/%p\n' >> $misc_list
    find misc/ ! -type d -printf '%{goroot}/%p\n' >> $misc_list

%if %{shared}
echo "== 4 =="
    mkdir -p %{buildroot}/%{_libdir}/
    mkdir -p %{buildroot}/%{golibdir}/
    for file in $(find .  -iname "*.so" ); do
        chmod 755 $file
        mv  $file %{buildroot}/%{golibdir}
        pushd $(dirname $file)
        ln -fs %{golibdir}/$(basename $file) $(basename $file)
        popd
        echo "%%{goroot}/$file" >> $shared_list
        echo "%%{golibdir}/$(basename $file)" >> $shared_list
    done
    
    find pkg/*_dynlink/ -type d -printf '%%%dir %{goroot}/%p\n' >> $shared_list
    find pkg/*_dynlink/ ! -type d -printf '%{goroot}/%p\n' >> $shared_list
%endif

echo "== 5 =="

%if %{race}

    find pkg/*_race/ -type d -printf '%%%dir %{goroot}/%p\n' >> $race_list
    find pkg/*_race/ ! -type d -printf '%{goroot}/%p\n' >> $race_list

%endif

    find test/ -type d -printf '%%%dir %{goroot}/%p\n' >> $tests_list
    find test/ ! -type d -printf '%{goroot}/%p\n' >> $tests_list
    find src/ -type d -a \( -name testdata -o -ipath '*/testdata/*' \) -printf '%%%dir %{goroot}/%p\n' >> $tests_list
    find src/ ! -type d -a \( -ipath '*/testdata/*' -o -name '*_test.go' \) -printf '%{goroot}/%p\n' >> $tests_list
    # this is only the zoneinfo.zip
    find lib/ -type d -printf '%%%dir %{goroot}/%p\n' >> $tests_list
    find lib/ ! -type d -printf '%{goroot}/%p\n' >> $tests_list
popd
echo "== 6 =="
# remove the doc Makefile
rm -rfv $RPM_BUILD_ROOT%{goroot}/doc/Makefile

# put binaries to bindir, linked to the arch we're building,
# leave the arch independent pieces in {goroot}
mkdir -p $RPM_BUILD_ROOT%{goroot}/bin/linux_%{gohostarch}
ln -sf %{goroot}/bin/go $RPM_BUILD_ROOT%{goroot}/bin/linux_%{gohostarch}/go
ln -sf %{goroot}/bin/gofmt $RPM_BUILD_ROOT%{goroot}/bin/linux_%{gohostarch}/gofmt

# ensure these exist and are owned
mkdir -p $RPM_BUILD_ROOT%{gopath}/src/github.com
mkdir -p $RPM_BUILD_ROOT%{gopath}/src/bitbucket.org
mkdir -p $RPM_BUILD_ROOT%{gopath}/src/code.google.com/p
mkdir -p $RPM_BUILD_ROOT%{gopath}/src/golang.org/x
echo "== 7 =="
# make sure these files exist and point to alternatives
rm -f $RPM_BUILD_ROOT%{_bindir}/go
ln -sf /etc/alternatives/go $RPM_BUILD_ROOT%{_bindir}/go
rm -f $RPM_BUILD_ROOT%{_bindir}/gofmt
ln -sf /etc/alternatives/gofmt $RPM_BUILD_ROOT%{_bindir}/gofmt

# gdbinit
mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}/gdbinit.d
cp -av %{SOURCE100} $RPM_BUILD_ROOT%{_sysconfdir}/gdbinit.d/golang.gdb

echo "== END OF INSTALL =="

%check
export GOROOT=$(pwd -P)
export PATH="$GOROOT"/bin:"$PATH"
cd src

export CC="gcc"
export CFLAGS="$RPM_OPT_FLAGS"
export LDFLAGS="$RPM_LD_FLAGS"
%if !%{external_linker}
export GO_LDFLAGS="-linkmode internal"
%endif
%if !%{cgo_enabled} || !%{external_linker}
export CGO_ENABLED=0
%endif
# workaround for https://github.com/golang/go/issues/39466 until it gests fixed
# Commented until the patch is ready, this workaround suggested in the link above
# doesn't work properly
#ifarch aarch64
#export CGO_CFLAGS="-mno-outline-atomics"
#endif

# make sure to not timeout
export GO_TEST_TIMEOUT_SCALE=2

%if %{fail_on_tests}
./run.bash --no-rebuild -v -v -v -k
%else
./run.bash --no-rebuild -v -v -v -k || :
%endif
cd ..


%post bin
%{_sbindir}/update-alternatives --install %{_bindir}/go \
    go %{goroot}/bin/go 90 \
    --slave %{_bindir}/gofmt gofmt %{goroot}/bin/gofmt

%preun bin
if [ $1 = 0 ]; then
    %{_sbindir}/update-alternatives --remove go %{goroot}/bin/go
fi


%files
%license LICENSE PATENTS
%doc AUTHORS CONTRIBUTORS
# VERSION has to be present in the GOROOT, for `go install std` to work
%doc %{goroot}/VERSION
%dir %{goroot}/doc

# go files
%dir %{goroot}
%{goroot}/api/
%{goroot}/lib/time/

# ensure directory ownership, so they are cleaned up if empty
%dir %{gopath}
%dir %{gopath}/src
%dir %{gopath}/src/github.com/
%dir %{gopath}/src/bitbucket.org/
%dir %{gopath}/src/code.google.com/
%dir %{gopath}/src/code.google.com/p/
%dir %{gopath}/src/golang.org
%dir %{gopath}/src/golang.org/x


# gdbinit (for gdb debugging)
%{_sysconfdir}/gdbinit.d

%files src -f go-src.list

%files docs -f go-docs.list

%files misc -f go-misc.list

%files tests -f go-tests.list

%files bin -f go-pkg.list
%{_bindir}/go
%{_bindir}/gofmt
%{goroot}/bin/linux_%{gohostarch}/go
%{goroot}/bin/linux_%{gohostarch}/gofmt

%if %{shared}
%files shared -f go-shared.list
%endif

%if %{race}
%files race -f go-race.list
%endif

%changelog