# 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 1.15.1
%global bootstrap_cargo 0.16.0
%global bootstrap_channel %{bootstrap_rust}
%global bootstrap_date 2017-02-09

# 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}
%bcond_without bundled_llvm
%else
%bcond_with bundled_llvm
%endif

# LLDB isn't available everywhere...
%if 0%{?rhel}
%bcond_with lldb
%else
%bcond_without lldb
%endif



Name:           rust
Version:        1.16.0
Release:        2%{?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.gz

Patch1:         rust-1.16.0-configure-no-override.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.gz\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}%{_prefix}
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 0%{?epel}
BuildRequires:  cmake3
%else
BuildRequires:  cmake
%endif

%if %with bundled_llvm
Provides:       bundled(llvm) = 3.9
%else
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:       gcc

%if 0%{?fedora} >= 26
# Only non-bootstrap builds should require rust-rpm-macros, because that
# requires cargo, which might not exist yet.
%ifnarch %{bootstrap_arches}
Requires:       rust-rpm-macros
%endif
%endif

# 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})$

# 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.
%global _find_debuginfo_opts -g
%undefine _include_minidebuginfo

%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 gdb
Summary:        GDB pretty printers for Rust
BuildArch:      noarch
Requires:       gdb

%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
BuildArch:      noarch

# LLDB is only available on some architectures
ExclusiveArch:  %{arm} aarch64 %{ix86} x86_64  noarch
Requires:       lldb

%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.


%prep

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

%setup -q -n %{rustc_package}

# unbundle
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

# These tests assume that alloc_jemalloc is present
# https://github.com/rust-lang/rust/issues/35017
sed -i.jemalloc -e '1i // ignore-test jemalloc is disabled' \
  src/test/compile-fail/allocator-dylib-is-system.rs \
  src/test/compile-fail/allocator-rust-dylib-is-jemalloc.rs \
  src/test/run-pass/allocator-default.rs

%if 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

%patch1 -p1 -b .no-override


%build

%{?cmake_path:export PATH=%{cmake_path}:$PATH}

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

%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=%{_prefix} --disable-codegen-tests \
    %{!?with_llvm_static: --enable-llvm-link-shared } } \
  --disable-jemalloc \
  --disable-rpath \
  --enable-debuginfo \
  --enable-vendor \
  --release-channel=%{channel}

%make_build %{!?rhel:-Onone}


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

%make_install

# The libdir libraries are identical to those under rustlib/, and we need
# the latter in place to support dynamic linking for compiler plugins, so we'll
# point ldconfig to rustlib/ and remove the former.
%global rust_ldconfig %{_sysconfdir}/ld.so.conf.d/%{name}-%{_arch}.conf
mkdir -p %{buildroot}$(dirname %{rust_ldconfig})
echo "%{rustlibdir}/%{rust_triple}/lib" > %{buildroot}%{rust_ldconfig}
rm -v %{buildroot}%{common_libdir}/*.so

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

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

# 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}
export RUSTFLAGS="%{rustflags}"

# Note, many of the tests execute in parallel threads,
# so it's better not to use a parallel make here.
# The results are not stable on koji, so mask errors and just log it.
make check || :


%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
%{_mandir}/man1/rustc.1*
%{_mandir}/man1/rustdoc.1*
%dir %{rustlibdir}
%dir %{rustlibdir}/%{rust_triple}
%dir %{rustlibdir}/%{rust_triple}/lib
%{rustlibdir}/%{rust_triple}/lib/*.so
%{rust_ldconfig}


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


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


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


%files doc
%dir %{_docdir}/%{name}
%license %{_docdir}/%{name}/html/FiraSans-LICENSE.txt
%license %{_docdir}/%{name}/html/Heuristica-LICENSE.txt
%license %{_docdir}/%{name}/html/LICENSE-APACHE.txt
%license %{_docdir}/%{name}/html/LICENSE-MIT.txt
%license %{_docdir}/%{name}/html/SourceCodePro-LICENSE.txt
%license %{_docdir}/%{name}/html/SourceSerifPro-LICENSE.txt
%doc %{_docdir}/%{name}/html/


%changelog
* Fri Mar 17 2017 Josh Stone <jistone@redhat.com> - 1.16.0-2
- Limit rust-lldb arches

* 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.

* Thu Feb 09 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.

* Fri Dec 23 2016 Josh Stone <jistone@redhat.com> - 1.14.0-2
- Rebuild without bootstrap binaries.

* Thu Dec 22 2016 Josh Stone <jistone@redhat.com> - 1.14.0-1
- Update to 1.14.0.
- Rewrite bootstrap logic to target specific arches.
- Bootstrap ppc64, ppc64le, s390x. (thanks to Sinny Kumari for testing!)

* 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.

* Thu Oct 20 2016 Josh Stone <jistone@redhat.com> - 1.12.1-1
- Update to 1.12.1.

* Fri Oct 14 2016 Josh Stone <jistone@redhat.com> - 1.12.0-7
- Rebuild with LLVM 3.9.
- Add ncurses-devel for llvm-config's -ltinfo.

* Thu Oct 13 2016 Josh Stone <jistone@redhat.com> - 1.12.0-6
- Rebuild with llvm-static, preparing for 3.9

* Fri Oct 07 2016 Josh Stone <jistone@redhat.com> - 1.12.0-5
- Rebuild with fixed eu-strip (rhbz1380961)

* Fri Oct 07 2016 Josh Stone <jistone@redhat.com> - 1.12.0-4
- Rebuild without bootstrap binaries.

* Thu Oct 06 2016 Josh Stone <jistone@redhat.com> - 1.12.0-3
- Bootstrap aarch64.
- Use jemalloc's MALLOC_CONF to work around #36944.
- Apply pr36933 to really disable armv7hl NEON.

* Sat Oct 01 2016 Josh Stone <jistone@redhat.com> - 1.12.0-2
- Protect .rustc from rpm stripping.

* Fri Sep 30 2016 Josh Stone <jistone@redhat.com> - 1.12.0-1
- Update to 1.12.0.
- Always use --local-rust-root, even for bootstrap binaries.
- Remove the rebuild conditional - the build system now figures it out.
- Let minidebuginfo do its thing, since metadata is no longer a note.
- Let rust build its own compiler-rt builtins again.

* 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