# Only x86_64 and i686 are Tier 1 platforms at this time.
# https://forge.rust-lang.org/platform-support.html
%global rust_arches x86_64 i686 armv7hl aarch64 ppc64 ppc64le s390x

# The channel can be stable, beta, or nightly
%{!?channel: %global channel stable}

# To bootstrap from scratch, set the channel and date from src/stage0.txt
# e.g. 1.10.0 wants rustc: 1.9.0-2016-05-24
# or nightly wants some beta-YYYY-MM-DD
%global bootstrap_rust 1.22.0
%global bootstrap_cargo 0.23.0
%global bootstrap_channel %{bootstrap_rust}
%global bootstrap_date 2017-11-22

# Only the specified arches will use bootstrap binaries.
#global bootstrap_arches %%{rust_arches}

# We generally don't want llvm-static present at all, since llvm-config will
# make us link statically.  But we can opt in, e.g. to aid LLVM rebases.
# FIXME: LLVM 3.9 prefers shared linking now! Which is good, but next time we
# *want* static we'll have to force it with "llvm-config --link-static".
# See also https://github.com/rust-lang/rust/issues/36854
# The new rustbuild accepts `--enable-llvm-link-shared`, else links static.
%bcond_with llvm_static

# We can also choose to just use Rust's bundled LLVM, in case the system LLVM
# is insufficient.  Rust currently requires LLVM 3.7+.
%if 0%{?rhel} && !0%{?epel}
%bcond_without bundled_llvm
%else
%bcond_with bundled_llvm
%endif

# LLDB only works on some architectures
%ifarch %{arm} aarch64 %{ix86} x86_64
# LLDB isn't available everywhere...
%if !0%{?rhel}
%bcond_without lldb
%else
%bcond_with lldb
%endif
%else
%bcond_with lldb
%endif



Name:           rust
Version:        1.23.0
Release:        1%{?dist}
Summary:        The Rust Programming Language
License:        (ASL 2.0 or MIT) and (BSD and ISC and MIT)
# ^ written as: (rust itself) and (bundled libraries)
URL:            https://www.rust-lang.org
ExclusiveArch:  %{rust_arches}

%if "%{channel}" == "stable"
%global rustc_package rustc-%{version}-src
%else
%global rustc_package rustc-%{channel}-src
%endif
Source0:        https://static.rust-lang.org/dist/%{rustc_package}.tar.xz

Patch1:         binaryen-cmake-aarch64.patch

# Get the Rust triple for any arch.
%{lua: function rust_triple(arch)
  local abi = "gnu"
  if arch == "armv7hl" then
    arch = "armv7"
    abi = "gnueabihf"
  elseif arch == "ppc64" then
    arch = "powerpc64"
  elseif arch == "ppc64le" then
    arch = "powerpc64le"
  end
  return arch.."-unknown-linux-"..abi
end}

%global rust_triple %{lua: print(rust_triple(rpm.expand("%{_target_cpu}")))}

%if %defined bootstrap_arches
# For each bootstrap arch, add an additional binary Source.
# Also define bootstrap_source just for the current target.
%{lua: do
  local bootstrap_arches = {}
  for arch in string.gmatch(rpm.expand("%{bootstrap_arches}"), "%S+") do
    table.insert(bootstrap_arches, arch)
  end
  local base = rpm.expand("https://static.rust-lang.org/dist/%{bootstrap_date}"
                          .."/rust-%{bootstrap_channel}")
  local target_arch = rpm.expand("%{_target_cpu}")
  for i, arch in ipairs(bootstrap_arches) do
    print(string.format("Source%d: %s-%s.tar.xz\n",
                        i, base, rust_triple(arch)))
    if arch == target_arch then
      rpm.define("bootstrap_source "..i)
    end
  end
end}
%endif

%ifarch %{bootstrap_arches}
%global bootstrap_root rust-%{bootstrap_channel}-%{rust_triple}
%global local_rust_root %{_builddir}/%{bootstrap_root}/usr
Provides:       bundled(%{name}-bootstrap) = %{bootstrap_rust}
%else
BuildRequires:  cargo >= %{bootstrap_cargo}
BuildRequires:  %{name} >= %{bootstrap_rust}
BuildConflicts: %{name} > %{version}
%global local_rust_root %{_prefix}
%endif

BuildRequires:  make
BuildRequires:  gcc
BuildRequires:  gcc-c++
BuildRequires:  ncurses-devel
BuildRequires:  zlib-devel
BuildRequires:  python2
BuildRequires:  curl

%if %with bundled_llvm
BuildRequires:  cmake3 >= 3.4.3
Provides:       bundled(llvm) = 4.0
%else
BuildRequires:  cmake >= 2.8.7
%if 0%{?epel}
%global llvm llvm3.9
%endif
%if 0%{?fedora} >= 27
%global llvm llvm4.0
%endif
%if %defined llvm
%global llvm_root %{_libdir}/%{llvm}
%else
%global llvm llvm
%global llvm_root %{_prefix}
%endif
BuildRequires:  %{llvm}-devel >= 3.7
%if %with llvm_static
BuildRequires:  %{llvm}-static
BuildRequires:  libffi-devel
%else
# Make sure llvm-config doesn't see it.
BuildConflicts: %{llvm}-static
%endif
%endif

# make check needs "ps" for src/test/run-pass/wait-forked-but-failed-child.rs
BuildRequires:  procps-ng

# debuginfo-gdb tests need gdb
BuildRequires:  gdb

# TODO: work on unbundling these!
Provides:       bundled(hoedown) = 3.0.5
Provides:       bundled(jquery) = 2.1.4
Provides:       bundled(libbacktrace) = 6.1.0
Provides:       bundled(miniz) = 1.14

# Virtual provides for folks who attempt "dnf install rustc"
Provides:       rustc = %{version}-%{release}
Provides:       rustc%{?_isa} = %{version}-%{release}

# Always require our exact standard library
Requires:       %{name}-std-static%{?_isa} = %{version}-%{release}

# The C compiler is needed at runtime just for linking.  Someday rustc might
# invoke the linker directly, and then we'll only need binutils.
# https://github.com/rust-lang/rust/issues/11937
Requires:       /usr/bin/cc

# ALL Rust libraries are private, because they don't keep an ABI.
%global _privatelibs lib.*-[[:xdigit:]]*[.]so.*
%global __provides_exclude ^(%{_privatelibs})$
%global __requires_exclude ^(%{_privatelibs})$
%global __provides_exclude_from ^%{_docdir}/.*$
%global __requires_exclude_from ^%{_docdir}/.*$

# While we don't want to encourage dynamic linking to Rust shared libraries, as
# there's no stable ABI, we still need the unallocated metadata (.rustc) to
# support custom-derive plugins like #[proc_macro_derive(Foo)].  But eu-strip is
# very eager by default, so we have to limit it to -g, only debugging symbols.
%if 0%{?fedora} >= 27
# Newer find-debuginfo.sh supports --keep-section, which is preferable. rhbz1465997
%global _find_debuginfo_opts --keep-section .rustc
%else
%global _find_debuginfo_opts -g
%undefine _include_minidebuginfo
%endif

# Use hardening ldflags.
%global rustflags -Clink-arg=-Wl,-z,relro,-z,now

%if %{without bundled_llvm} && "%{llvm_root}" != "%{_prefix}"
# https://github.com/rust-lang/rust/issues/40717
%global library_path $(%{llvm_root}/bin/llvm-config --libdir)
%endif

%description
Rust is a systems programming language that runs blazingly fast, prevents
segfaults, and guarantees thread safety.

This package includes the Rust compiler and documentation generator.


%package std-static
Summary:        Standard library for Rust

%description std-static
This package includes the standard libraries for building applications
written in Rust.


%package debugger-common
Summary:        Common debugger pretty printers for Rust
BuildArch:      noarch

%description debugger-common
This package includes the common functionality for %{name}-gdb and %{name}-lldb.


%package gdb
Summary:        GDB pretty printers for Rust
BuildArch:      noarch
Requires:       gdb
Requires:       %{name}-debugger-common = %{version}-%{release}

%description gdb
This package includes the rust-gdb script, which allows easier debugging of Rust
programs.


%if %with lldb

%package lldb
Summary:        LLDB pretty printers for Rust

# It could be noarch, but lldb has limited availability
#BuildArch:      noarch

Requires:       lldb
Requires:       python-lldb
Requires:       %{name}-debugger-common = %{version}-%{release}

%description lldb
This package includes the rust-lldb script, which allows easier debugging of Rust
programs.

%endif


%package doc
Summary:        Documentation for Rust
# NOT BuildArch:      noarch
# Note, while docs are mostly noarch, some things do vary by target_arch.
# Koji will fail the build in rpmdiff if two architectures build a noarch
# subpackage differently, so instead we have to keep its arch.

%description doc
This package includes HTML documentation for the Rust programming language and
its standard library.


%package src
Summary:        Sources for the Rust standard library
BuildArch:      noarch

%description src
This package includes source files for the Rust standard library.  It may be
useful as a reference for code completion tools in various editors.


%prep

%ifarch %{bootstrap_arches}
%setup -q -n %{bootstrap_root} -T -b %{bootstrap_source}
./install.sh --components=cargo,rustc,rust-std-%{rust_triple} \
  --prefix=%{local_rust_root} --disable-ldconfig
test -f '%{local_rust_root}/bin/cargo'
test -f '%{local_rust_root}/bin/rustc'
%endif

%setup -q -n %{rustc_package}

pushd src/binaryen
%patch1 -p1 -b.aarch64
popd

# We're disabling jemalloc, but rust-src still wants it.
# rm -rf src/jemalloc/

%if %without bundled_llvm
rm -rf src/llvm/
%endif

# extract bundled licenses for packaging
cp src/rt/hoedown/LICENSE src/rt/hoedown/LICENSE-hoedown
sed -e '/*\//q' src/libbacktrace/backtrace.h \
  >src/libbacktrace/LICENSE-libbacktrace

# This tests a problem of exponential growth, which seems to be less-reliably
# fixed when running on older LLVM and/or some arches.  Just skip it for now.
sed -i.ignore -e '1i // ignore-test may still be exponential...' \
  src/test/run-pass/issue-41696.rs

%if %{with bundled_llvm} && 0%{?epel}
mkdir -p cmake-bin
ln -s /usr/bin/cmake3 cmake-bin/cmake
%global cmake_path $PWD/cmake-bin
%endif

%if %{without bundled_llvm} && %{with llvm_static}
# Static linking to distro LLVM needs to add -lffi
# https://github.com/rust-lang/rust/issues/34486
sed -i.ffi -e '$a #[link(name = "ffi")] extern {}' \
  src/librustc_llvm/lib.rs
%endif

# The configure macro will modify some autoconf-related files, which upsets
# cargo when it tries to verify checksums in those files.  If we just truncate
# that file list, cargo won't have anything to complain about.
find src/vendor -name .cargo-checksum.json \
  -exec sed -i.uncheck -e 's/"files":{[^}]*}/"files":{ }/' '{}' '+'


%build

%{?cmake_path:export PATH=%{cmake_path}:$PATH}
%{?library_path:export LIBRARY_PATH="%{library_path}"}
%{?rustflags:export RUSTFLAGS="%{rustflags}"}

# We're going to override --libdir when configuring to get rustlib into a
# common path, but we'll fix the shared libraries during install.
%global common_libdir %{_prefix}/lib
%global rustlibdir %{common_libdir}/rustlib

%ifarch %{arm}
# full debuginfo is exhausting memory; just do libstd for now
# https://github.com/rust-lang/rust/issues/45854
%define enable_debuginfo --enable-debuginfo --enable-debuginfo-only-std --disable-debuginfo-lines
%else
%define enable_debuginfo --enable-debuginfo --disable-debuginfo-only-std --disable-debuginfo-lines
%endif

%configure --disable-option-checking \
  --libdir=%{common_libdir} \
  --build=%{rust_triple} --host=%{rust_triple} --target=%{rust_triple} \
  --enable-local-rust --local-rust-root=%{local_rust_root} \
  %{!?with_bundled_llvm: --llvm-root=%{llvm_root} --disable-codegen-tests \
    %{!?with_llvm_static: --enable-llvm-link-shared } } \
  --disable-jemalloc \
  --disable-rpath \
  %{enable_debuginfo} \
  --enable-vendor \
  --release-channel=%{channel}

./x.py build
./x.py doc


%install
%{?cmake_path:export PATH=%{cmake_path}:$PATH}
%{?library_path:export LIBRARY_PATH="%{library_path}"}
%{?rustflags:export RUSTFLAGS="%{rustflags}"}

DESTDIR=%{buildroot} ./x.py install
DESTDIR=%{buildroot} ./x.py install src


# Make sure the shared libraries are in the proper libdir
%if "%{_libdir}" != "%{common_libdir}"
mkdir -p %{buildroot}%{_libdir}
find %{buildroot}%{common_libdir} -maxdepth 1 -type f -name '*.so' \
  -exec mv -v -t %{buildroot}%{_libdir} '{}' '+'
%endif

# The shared libraries should be executable for debuginfo extraction.
find %{buildroot}%{_libdir} -maxdepth 1 -type f -name '*.so' \
  -exec chmod -v +x '{}' '+'

# The libdir libraries are identical to those under rustlib/.  It's easier on
# library loading if we keep them in libdir, but we do need them in rustlib/
# to support dynamic linking for compiler plugins, so we'll symlink.
(cd "%{buildroot}%{rustlibdir}/%{rust_triple}/lib" &&
 find ../../../../%{_lib} -maxdepth 1 -name '*.so' \
   -exec ln -v -f -s -t . '{}' '+')

# Remove installer artifacts (manifests, uninstall scripts, etc.)
find %{buildroot}%{rustlibdir} -maxdepth 1 -type f -exec rm -v '{}' '+'

# FIXME: __os_install_post will strip the rlibs
# -- should we find a way to preserve debuginfo?

# Remove unwanted documentation files (we already package them)
rm -f %{buildroot}%{_docdir}/%{name}/README.md
rm -f %{buildroot}%{_docdir}/%{name}/COPYRIGHT
rm -f %{buildroot}%{_docdir}/%{name}/LICENSE-APACHE
rm -f %{buildroot}%{_docdir}/%{name}/LICENSE-MIT

# Sanitize the HTML documentation
find %{buildroot}%{_docdir}/%{name}/html -empty -delete
find %{buildroot}%{_docdir}/%{name}/html -type f -exec chmod -x '{}' '+'

%if %without lldb
rm -f %{buildroot}%{_bindir}/rust-lldb
rm -f %{buildroot}%{rustlibdir}/etc/lldb_*.py*
%endif


%check
%{?cmake_path:export PATH=%{cmake_path}:$PATH}
%{?library_path:export LIBRARY_PATH="%{library_path}"}
%{?rustflags:export RUSTFLAGS="%{rustflags}"}

# The results are not stable on koji, so mask errors and just log it.
./x.py test --no-fail-fast || :


%post -p /sbin/ldconfig
%postun -p /sbin/ldconfig


%files
%license COPYRIGHT LICENSE-APACHE LICENSE-MIT
%license src/libbacktrace/LICENSE-libbacktrace
%license src/rt/hoedown/LICENSE-hoedown
%doc README.md
%{_bindir}/rustc
%{_bindir}/rustdoc
%{_libdir}/*.so
%{_mandir}/man1/rustc.1*
%{_mandir}/man1/rustdoc.1*
%dir %{rustlibdir}
%dir %{rustlibdir}/%{rust_triple}
%dir %{rustlibdir}/%{rust_triple}/lib
%{rustlibdir}/%{rust_triple}/lib/*.so


%files std-static
%dir %{rustlibdir}
%dir %{rustlibdir}/%{rust_triple}
%dir %{rustlibdir}/%{rust_triple}/lib
%{rustlibdir}/%{rust_triple}/lib/*.rlib


%files debugger-common
%dir %{rustlibdir}
%dir %{rustlibdir}/etc
%{rustlibdir}/etc/debugger_*.py*


%files gdb
%{_bindir}/rust-gdb
%{rustlibdir}/etc/gdb_*.py*


%if %with lldb
%files lldb
%{_bindir}/rust-lldb
%{rustlibdir}/etc/lldb_*.py*
%endif


%files doc
%docdir %{_docdir}/%{name}
%dir %{_docdir}/%{name}
%dir %{_docdir}/%{name}/html
%{_docdir}/%{name}/html/*/
%{_docdir}/%{name}/html/*.html
%{_docdir}/%{name}/html/*.css
%{_docdir}/%{name}/html/*.js
%{_docdir}/%{name}/html/*.woff
%license %{_docdir}/%{name}/html/*.txt


%files src
%dir %{rustlibdir}
%{rustlibdir}/src


%changelog
* Mon Jan 08 2018 Josh Stone <jistone@redhat.com> - 1.23.0-1
- Update to 1.23.0.

* Thu Nov 23 2017 Josh Stone <jistone@redhat.com> - 1.22.1-1
- Update to 1.22.1.

* Thu Oct 12 2017 Josh Stone <jistone@redhat.com> - 1.21.0-1
- Update to 1.21.0.

* Mon Sep 11 2017 Josh Stone <jistone@redhat.com> - 1.20.0-2
- ABI fixes for ppc64 and s390x.

* Thu Aug 31 2017 Josh Stone <jistone@redhat.com> - 1.20.0-1
- Update to 1.20.0.
- Add a rust-src subpackage.

* Thu Jul 20 2017 Josh Stone <jistone@redhat.com> - 1.19.0-1
- Update to 1.19.0.

* Thu Jun 08 2017 Josh Stone <jistone@redhat.com> - 1.18.0-1
- Update to 1.18.0.

* Mon May 08 2017 Josh Stone <jistone@redhat.com> - 1.17.0-2
- Move shared libraries back to libdir and symlink in rustlib

* Thu Apr 27 2017 Josh Stone <jistone@redhat.com> - 1.17.0-1
- Update to 1.17.0.

* Thu Mar 16 2017 Josh Stone <jistone@redhat.com> - 1.16.0-1
- Update to 1.16.0.
- Use rustbuild instead of the old makefiles.
- Update bootstrapping to include rust-std and cargo.
- Add a rust-lldb subpackage.

* Fri Feb 10 2017 Josh Stone <jistone@redhat.com> - 1.15.1-2
- Rebuild without bootstrap binaries.

* Fri Feb 10 2017 Josh Stone <jistone@redhat.com> - 1.15.1-1
- Update to 1.15.1.
- Require rust-rpm-macros for new crate packaging.
- Keep shared libraries under rustlib/, only debug-stripped.
- Merge and clean up conditionals for epel7.
- Bootstrap ppc64 and ppc64le.

* Tue Jan 03 2017 Josh Stone <jistone@redhat.com> - 1.14.0-1
- Update to 1.14.0.
- Rewrite bootstrap logic to target specific arches.

* Thu Nov 10 2016 Josh Stone <jistone@redhat.com> - 1.13.0-1
- Update to 1.13.0.
- Use hardening flags for linking.
- Split the standard library into its own package
- Centralize rustlib/ under /usr/lib/ for multilib integration.

* Sat Oct 22 2016 Josh Stone <jistone@redhat.com> - 1.12.1-1.1
- Rebuild without bootstrap binaries.

* Sat Oct 22 2016 Josh Stone <jistone@redhat.com> - 1.12.1-1
- Update to 1.12.1.
- Merge package changes from rawhide.
- Bootstrap aarch64.

* Tue Sep 20 2016 Josh Stone <jistone@redhat.com> - 1.11.0-3.2
- Rebuild without bootstrap binaries.

* Mon Sep 19 2016 Josh Stone <jistone@redhat.com> - 1.11.0-3.1
- Bootstrap el7, with bundled llvm

* Sat Sep 03 2016 Josh Stone <jistone@redhat.com> - 1.11.0-3
- Rebuild without bootstrap binaries.

* Fri Sep 02 2016 Josh Stone <jistone@redhat.com> - 1.11.0-2
- Bootstrap armv7hl, with backported no-neon patch.

* Wed Aug 24 2016 Josh Stone <jistone@redhat.com> - 1.11.0-1
- Update to 1.11.0.
- Drop the backported patches.
- Patch get-stage0.py to trust existing bootstrap binaries.
- Use libclang_rt.builtins from compiler-rt, dodging llvm-static issues.
- Use --local-rust-root to make sure the right bootstrap is used.

* Sat Aug 13 2016 Josh Stone <jistone@redhat.com> 1.10.0-4
- Rebuild without bootstrap binaries.

* Fri Aug 12 2016 Josh Stone <jistone@redhat.com> - 1.10.0-3
- Initial import into Fedora (#1356907), bootstrapped
- Format license text as suggested in review.
- Note how the tests already run in parallel.
- Undefine _include_minidebuginfo, because it duplicates ".note.rustc".
- Don't let checks fail the whole build.
- Note that -doc can't be noarch, as rpmdiff doesn't allow variations.

* Tue Jul 26 2016 Josh Stone <jistone@redhat.com> - 1.10.0-2
- Update -doc directory ownership, and mark its licenses.
- Package and declare licenses for libbacktrace and hoedown.
- Set bootstrap_base as a global.
- Explicitly require python2.

* Thu Jul 14 2016 Josh Stone <jistone@fedoraproject.org> - 1.10.0-1
- Initial package, bootstrapped