# (akien) This package is synced with Fedora / Josh Stone's spec.
# The aim is to work with them on a rust packaging policy we could share,
# so that we can ensure a good packaging and share the workload.

Name:           rust
Version:        1.74.0
Release:        %mkrel 6
Summary:        The Rust Programming Language
%if 0%{?mageia}
Group:          Development/Other
%endif
License:        (Apache-2.0 OR MIT) AND (Artistic-2.0 AND BSD-3-Clause AND ISC AND MIT AND MPL-2.0 AND Unicode-DFS-2016)
# ^ written as: (rust itself) and (bundled libraries)
URL:            https://www.rust-lang.org

# Only x86_64, i686, and aarch64 are Tier 1 platforms at this time.
# https://doc.rust-lang.org/nightly/rustc/platform-support.html
%global rust_arches x86_64 i686 armv7hl aarch64 ppc64le s390x riscv64

ExclusiveArch:  %{rust_arches} i586

%if 0%{?mageia}
# (akien) Added by tv in mga8/rust 1.37.0.
%global _python_bytecompile_extra 0
%endif

# To bootstrap from scratch, set the channel and date from src/stage0.json
# e.g. 1.59.0 wants rustc: 1.58.0-2022-01-13
# or nightly wants some beta-YYYY-MM-DD
%global bootstrap_version 1.73.0
%global bootstrap_channel 1.73.0
%global bootstrap_date 2023-10-05

# Only the specified arches will use bootstrap binaries.
# NOTE: Those binaries used to be uploaded with every new release, but that was
# a waste of lookaside cache space when they're most often unused.
# Run "spectool -g rust.spec" after changing this and then "fedpkg upload" to
# add them to sources. Remember to remove them again after the bootstrap build!
#global bootstrap_arches %%{rust_arches}
%global bootstrap_arches i686

# Define a space-separated list of targets to ship rust-std-static-$triple for
# cross-compilation. The packages are noarch, but they're not fully
# reproducible between hosts, so only x86_64 actually builds it.
%ifarch x86_64
%if 0%{?fedora} || 0%{?mageia}
%global mingw_targets i686-pc-windows-gnu x86_64-pc-windows-gnu
%endif
%global wasm_targets wasm32-unknown-unknown wasm32-wasi
%if 0%{?fedora} || 0%{?rhel} >= 10 || 0%{?mageia}
%global extra_targets x86_64-unknown-none x86_64-unknown-uefi
%endif
%endif
%global all_targets %{?mingw_targets} %{?wasm_targets} %{?extra_targets}
%define target_enabled() %{lua:
  print(string.find(rpm.expand(" %{all_targets} "), rpm.expand(" %1 "), 1, true) or 0)
}

# We need CRT files for *-wasi targets, at least as new as the commit in
# src/ci/docker/host-x86_64/dist-various-2/build-wasi-toolchain.sh
# (updated per https://github.com/rust-lang/rust/pull/96907)
%global wasi_libc_url https://github.com/WebAssembly/wasi-libc
#global wasi_libc_ref wasi-sdk-20
%global wasi_libc_ref bd950eb128bff337153de217b11270f948d04bb4
%global wasi_libc_name wasi-libc-%{wasi_libc_ref}
%global wasi_libc_source %{wasi_libc_url}/archive/%{wasi_libc_ref}/%{wasi_libc_name}.tar.gz
%global wasi_libc_dir %{_builddir}/%{wasi_libc_name}
%if 0%{?fedora}
%bcond_with bundled_wasi_libc
%else
%bcond_without bundled_wasi_libc
%endif

# Using llvm-static may be helpful as an opt-in, e.g. to aid LLVM rebases.
%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 15.0+.
%global min_llvm_version 15.0.0
%global bundled_llvm_version 17.0.4
%bcond_with bundled_llvm
# (akien) Hacks below are needed on mga's buildsystem when we have to rebootstrap llvm.
## Bundled LLVM has underlinking issues:
#%%global _disable_ld_no_undefined 1
#%%ifarch %%{arm} %%ix86
## Decrease debuginfo verbosity to reduce memory consumption during final library linking
#%%global optflags %%(echo %%{optflags} | sed 's/-g /-g1 /')
#%%endif

# Requires stable libgit2 1.7, and not the next minor soname change.
# This needs to be consistent with the bindings in vendor/libgit2-sys.
%global min_libgit2_version 1.7.1
%global next_libgit2_version 1.8.0~
%global bundled_libgit2_version 1.7.1
%if 0%{?fedora} >= 39 || 0%{?mageia} >= 99
%bcond_with bundled_libgit2
%else
%bcond_without bundled_libgit2
%endif

%if 0%{?rhel}
# Disable cargo->libgit2->libssh2 on RHEL, as it's not approved for FIPS (rhbz1732949)
%bcond_without disabled_libssh2
%else
%bcond_with disabled_libssh2
%endif

%if 0%{?__isa_bits} == 32
# Disable PGO on 32-bit to reduce build memory
%bcond_with rustc_pgo
%else
%bcond_without rustc_pgo
%endif

# Detect non-stable channels from the version, like 1.74.0~beta.1
%{lua: do
  local version = rpm.expand("%{version}")
  local version_channel, subs = string.gsub(version, "^.*~(%w+).*$", "%1", 1)
  rpm.define("channel " .. (subs ~= 0 and version_channel or "stable"))
  rpm.define("rustc_package rustc-" .. version_channel .. "-src")
end}
Source0:        https://static.rust-lang.org/dist/%{rustc_package}.tar.xz
Source1:        %{wasi_libc_source}
# Sources for bootstrap_arches are inserted by lua below

# By default, rust tries to use "rust-lld" as a linker for some targets.
Patch1:         0001-Use-lld-provided-by-system.patch

# Set a substitute-path in rust-gdb for standard library sources.
Patch2:         rustc-1.70.0-rust-gdb-substitute-path.patch

# Override default target CPUs to match distro settings
# TODO: upstream this ability into the actual build configuration
Patch3:         0001-Let-environment-variables-override-some-default-CPUs.patch

# Override the default self-contained system libraries
# TODO: the first can probably be upstreamed, but the second is hard-coded,
# and we're only applying that if not with bundled_wasi_libc.
Patch4:         0001-bootstrap-allow-disabling-target-self-contained.patch
Patch5:         0002-set-an-external-library-path-for-wasm32-wasi.patch

# (akien) Those tests fail on armv7 - on Fedora too, and jistone ignores them
# https://github.com/rust-lang/rust/issues/83453
Patch11:        rustc-1.50.0-allow_fail-armv7-instruction_set.patch

### RHEL-specific patches below ###

# Simple rpm macros for rust-toolset (as opposed to full rust-packaging)
Source100:      macros.rust-toolset

# Disable cargo->libgit2->libssh2 on RHEL, as it's not approved for FIPS (rhbz1732949)
Patch100:       rustc-1.74.0-disable-libssh2.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"
  elseif arch == "riscv64" then
    arch = "riscv64gc"
  end
  return arch.."-unknown-linux-"..abi
end}

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

# Get the environment form of the Rust triple
%global rust_triple_env %{lua:
  print(string.upper(string.gsub(rpm.expand("%{rust_triple}"), "-", "_")))
}

%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}")
  local channel = rpm.expand("%{bootstrap_channel}")
  local target_arch = rpm.expand("%{_target_cpu}")
  for i, arch in ipairs(bootstrap_arches) do
    i = 1000 + i * 3
    local suffix = channel.."-"..rust_triple(arch)
    print(string.format("Source%d: %s/cargo-%s.tar.xz\n", i, base, suffix))
    print(string.format("Source%d: %s/rustc-%s.tar.xz\n", i+1, base, suffix))
    print(string.format("Source%d: %s/rust-std-%s.tar.xz\n", i+2, base, suffix))
    if arch == target_arch then
      rpm.define("bootstrap_source_cargo "..i)
      rpm.define("bootstrap_source_rustc "..i+1)
      rpm.define("bootstrap_source_std "..i+2)
      rpm.define("bootstrap_suffix "..suffix)
    end
  end
end}
%endif

%ifarch %{bootstrap_arches}
%global local_rust_root %{_builddir}/rust-%{bootstrap_suffix}
Provides:       bundled(%{name}-bootstrap) = %{bootstrap_version}
%else
BuildRequires:  cargo >= %{bootstrap_version}
%if 0%{?mageia}
BuildRequires:  %{name} >= %{bootstrap_version}
BuildConflicts: %{name} > %{version}
%else
BuildRequires:  (%{name} >= %{bootstrap_version} with %{name} <= %{version})
%endif
%global local_rust_root %{_prefix}
%endif

BuildRequires:  make
BuildRequires:  gcc
BuildRequires:  gcc-c++
BuildRequires:  ncurses-devel
# explicit curl-devel to avoid httpd24-curl (rhbz1540167)
BuildRequires:  curl-devel
BuildRequires:  pkgconfig(libcurl)
BuildRequires:  pkgconfig(liblzma)
BuildRequires:  pkgconfig(openssl)
BuildRequires:  pkgconfig(zlib)

%if %{without bundled_libgit2}
%if 0%{?mageia}
BuildRequires:  pkgconfig(libgit2) >= %{min_libgit2_version}
BuildRequires:  pkgconfig(libgit2) < %{next_libgit2_version}
%else
BuildRequires:  (pkgconfig(libgit2) >= %{min_libgit2_version} with pkgconfig(libgit2) < %{next_libgit2_version})
%endif
%endif

%if %{without disabled_libssh2}
BuildRequires:  pkgconfig(libssh2)
%endif

%if 0%{?rhel} == 8
BuildRequires:  platform-python
%else
BuildRequires:  python3
%endif
BuildRequires:  python3-rpm-macros

%if %with bundled_llvm
BuildRequires:  cmake >= 3.20.0
BuildRequires:  ninja-build
Provides:       bundled(llvm) = %{bundled_llvm_version}
%else
BuildRequires:  cmake >= 3.5.1
%if %defined llvm
%if 0%{?mageia}
%global llvm_root %{_prefix}/lib/%{llvm}
%else
%global llvm_root %{_libdir}/%{llvm}
%endif
%else
%global llvm llvm
%global llvm_root %{_prefix}
%endif
BuildRequires:  %{llvm}-devel >= %{min_llvm_version}
%if %with llvm_static
BuildRequires:  %{llvm}-static
BuildRequires:  libffi-devel
%endif
%endif

# LLVM seems to need libatomic on armv7hl only. May be fixed in future releases?
%ifarch %{arm}
BuildRequires:  libatomic-devel
%endif

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

# debuginfo-gdb tests need gdb
BuildRequires:  gdb

# For src/test/run-make/static-pie
%if 0%{?mageia}
BuildRequires: glibc-static-devel
%else
BuildRequires: glibc-static
%endif

# 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
%if 0%{?mageia}
Requires:       gcc
%else
Requires:       /usr/bin/cc
%endif

%global __ranlib %{_bindir}/ranlib

# ALL Rust libraries are private, because they don't keep an ABI.
%global _privatelibs lib(.*-[[:xdigit:]]{16}*|rustc.*)[.]so.*
%global __provides_exclude ^(%{_privatelibs})$
%global __requires_exclude ^(%{_privatelibs})$
%global __provides_exclude_from ^(%{_docdir}|%{rustlibdir}/src)/.*$
%global __requires_exclude_from ^(%{_docdir}|%{rustlibdir}/src)/.*$

# 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)].
%global _find_debuginfo_opts --keep-section .rustc

%if %{without bundled_llvm}
%if "%{llvm_root}" == "%{_prefix}" || 0%{?scl:1}
%global llvm_has_filecheck 1
%endif
%endif

# 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

%if %defined mingw_targets
BuildRequires:  mingw32-filesystem >= 95
BuildRequires:  mingw64-filesystem >= 95
BuildRequires:  mingw32-crt
BuildRequires:  mingw64-crt
BuildRequires:  mingw32-gcc
BuildRequires:  mingw64-gcc
BuildRequires:  mingw32-winpthreads-static
BuildRequires:  mingw64-winpthreads-static
%endif

%if %defined wasm_targets
%if %with bundled_wasi_libc
BuildRequires:  clang
%else
BuildRequires:  wasi-libc-static
%endif
BuildRequires:  lld
# brp-strip-static-archive breaks the archive index for wasm
%global __os_install_post \
%__os_install_post \
find '%{buildroot}%{rustlibdir}'/wasm*/lib -type f -regex '.*\\.\\(a\\|rlib\\)' -print -exec '%{llvm_root}/bin/llvm-ranlib' '{}' ';' \
%{nil}
%endif

# For profiler_builtins
BuildRequires:  compiler-rt
%if 0%{?mageia}
BuildRequires:  rpm_macro(clang_major_version)
%endif

# This component was removed as of Rust 1.69.0.
# https://github.com/rust-lang/rust/pull/101841
Obsoletes:      %{name}-analysis < 1.69.0~

%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
Provides:       %{name}-std-static-%{rust_triple} = %{version}-%{release}
Requires:       %{name} = %{version}-%{release}
Requires:       glibc-devel%{?_isa} >= 2.17

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

%global target_package()                        \
%package std-static-%1                          \
Summary:        Standard library for Rust %1    \
Requires:       %{name} = %{version}-%{release}

%global target_description()                                            \
%description std-static-%1                                              \
This package includes the standard libraries for building applications  \
written in Rust for the %2 target %1.

%if %target_enabled i686-pc-windows-gnu
%target_package i686-pc-windows-gnu
Requires:       mingw32-crt
Requires:       mingw32-gcc
Requires:       mingw32-winpthreads-static
Provides:       mingw32-rust = %{version}-%{release}
Provides:       mingw32-rustc = %{version}-%{release}
BuildArch:      noarch
%target_description i686-pc-windows-gnu MinGW
%endif

%if %target_enabled x86_64-pc-windows-gnu
%target_package x86_64-pc-windows-gnu
Requires:       mingw64-crt
Requires:       mingw64-gcc
Requires:       mingw64-winpthreads-static
Provides:       mingw64-rust = %{version}-%{release}
Provides:       mingw64-rustc = %{version}-%{release}
BuildArch:      noarch
%target_description x86_64-pc-windows-gnu MinGW
%endif

%if %target_enabled wasm32-unknown-unknown
%target_package wasm32-unknown-unknown
Requires:       lld >= 8.0
BuildArch:      noarch
%target_description wasm32-unknown-unknown WebAssembly
%endif

%if %target_enabled wasm32-wasi
%target_package wasm32-wasi
Requires:       lld >= 8.0
%if %with bundled_wasi_libc
Provides:       bundled(wasi-libc)
%else
Requires:       wasi-libc-static
%endif
BuildArch:      noarch
%target_description wasm32-wasi WebAssembly
%endif

%if %target_enabled x86_64-unknown-none
%target_package x86_64-unknown-none
Requires:       lld
%target_description x86_64-unknown-none embedded
%endif

%if %target_enabled x86_64-unknown-uefi
%target_package x86_64-unknown-uefi
Requires:       lld
%target_description x86_64-unknown-uefi embedded
%endif


%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.


%package lldb
Summary:        LLDB pretty printers for Rust
BuildArch:      noarch
Requires:       lldb
Requires:       python3-lldb
Requires:       %{name}-debugger-common = %{version}-%{release}

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


%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.

# Cargo no longer builds its own documentation
# https://github.com/rust-lang/cargo/pull/4904
# We used to keep a shim cargo-doc package, but now that's merged too.
Obsoletes:      cargo-doc < 1.65.0~
Provides:       cargo-doc = %{version}-%{release}

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


%package -n cargo
Summary:        Rust's package manager and build tool
%if %with bundled_libgit2
Provides:       bundled(libgit2) = %{bundled_libgit2_version}
%endif
# For tests:
BuildRequires:  git-core
# Cargo is not much use without Rust
Requires:       %{name}

# "cargo vendor" is a builtin command starting with 1.37.  The Obsoletes and
# Provides are mostly relevant to RHEL, but harmless to have on Fedora/etc. too
Obsoletes:      cargo-vendor <= 0.1.23
Provides:       cargo-vendor = %{version}-%{release}

%description -n cargo
Cargo is a tool that allows Rust projects to declare their various dependencies
and ensure that you'll always get a repeatable build.


%package -n rustfmt
Summary:        Tool to find and fix Rust formatting issues
Requires:       cargo

# /usr/bin/rustfmt is dynamically linked against internal rustc libs
Requires:       %{name}%{?_isa} = %{version}-%{release}

# The component/package was rustfmt-preview until Rust 1.31.
Obsoletes:      rustfmt-preview < 1.0.0
Provides:       rustfmt-preview = %{version}-%{release}

%description -n rustfmt
A tool for formatting Rust code according to style guidelines.


%package analyzer
Summary:        Rust implementation of the Language Server Protocol

# The standard library sources are needed for most functionality.
Recommends:     %{name}-src

# RLS is no longer available as of Rust 1.65, but we're including the stub
# binary that implements LSP just enough to recommend rust-analyzer.
Obsoletes:      rls < 1.65.0~
# The component/package was rls-preview until Rust 1.31.
Obsoletes:      rls-preview < 1.31.6

%description analyzer
rust-analyzer is an implementation of Language Server Protocol for the Rust
programming language. It provides features like completion and goto definition
for many code editors, including VS Code, Emacs and Vim.


%package -n clippy
Summary:        Lints to catch common mistakes and improve your Rust code
Requires:       cargo
# /usr/bin/clippy-driver is dynamically linked against internal rustc libs
Requires:       %{name}%{?_isa} = %{version}-%{release}

# The component/package was clippy-preview until Rust 1.31.
Obsoletes:      clippy-preview <= 0.0.212
Provides:       clippy-preview = %{version}-%{release}

%description -n clippy
A collection of lints to catch common mistakes and improve your Rust code.


%package src
Summary:        Sources for the Rust standard library
BuildArch:      noarch
Recommends:     %{name}-std-static = %{version}-%{release}

%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.


%if 0%{?rhel}

%package toolset
Summary:        Rust Toolset
BuildArch:      noarch
Requires:       rust = %{version}-%{release}
Requires:       cargo = %{version}-%{release}

%description toolset
This is the metapackage for Rust Toolset, bringing in the Rust compiler,
the Cargo package manager, and a few convenience macros for rpm builds.

%endif


%prep

%ifarch %{bootstrap_arches}
rm -rf %{local_rust_root}
%setup -q -n cargo-%{bootstrap_suffix} -T -b %{bootstrap_source_cargo}
./install.sh --prefix=%{local_rust_root} --disable-ldconfig
%setup -q -n rustc-%{bootstrap_suffix} -T -b %{bootstrap_source_rustc}
./install.sh --prefix=%{local_rust_root} --disable-ldconfig
%setup -q -n rust-std-%{bootstrap_suffix} -T -b %{bootstrap_source_std}
./install.sh --prefix=%{local_rust_root} --disable-ldconfig
test -f '%{local_rust_root}/bin/cargo'
test -f '%{local_rust_root}/bin/rustc'
%endif

%if %{defined wasm_targets} && %{with bundled_wasi_libc}
%setup -q -n %{wasi_libc_name} -T -b 1
rm -rf %{wasi_libc_dir}/dlmalloc/
%endif

%setup -q -n %{rustc_package}

%patch -P1 -p1
%patch -P2 -p1
%patch -P3 -p1
%patch -P4 -p1
%if %without bundled_wasi_libc
%patch -P5 -p1
%endif

%patch -P11 -p1

%if %with disabled_libssh2
%patch -P100 -p1
%endif

# Use our explicit python3 first
sed -i.try-python -e '/^try python3 /i try "%{__python3}" "$@"' ./configure

# Set a substitute-path in rust-gdb for standard library sources.
sed -i.rust-src -e "s#@BUILDDIR@#$PWD#" ./src/etc/rust-gdb

%if %without bundled_llvm
rm -rf src/llvm-project/
mkdir -p src/llvm-project/libunwind/
%endif

# Remove other unused vendored libraries. This leaves the directory in place,
# because some build scripts watch them, e.g. "cargo:rerun-if-changed=curl".
%define clear_dir() find ./%1 -mindepth 1 -delete
%clear_dir vendor/curl-sys*/curl/
%clear_dir vendor/*jemalloc-sys*/jemalloc/
%clear_dir vendor/libffi-sys*/libffi/
%clear_dir vendor/libmimalloc-sys*/c_src/mimalloc/
%clear_dir vendor/libssh2-sys*/libssh2/
%clear_dir vendor/libz-sys*/src/zlib{,-ng}/
%clear_dir vendor/lzma-sys*/xz-*/
%clear_dir vendor/openssl-src*/openssl/ 

%if %without bundled_libgit2
%clear_dir vendor/libgit2-sys*/libgit2/
%endif

%if %with disabled_libssh2
rm -rf vendor/libssh2-sys*/
%endif

# This only affects the transient rust-installer, but let it use our dynamic xz-libs
sed -i.lzma -e '/LZMA_API_STATIC/d' src/bootstrap/tool.rs

%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 {}' \
  compiler/rustc_llvm/src/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 vendor -name .cargo-checksum.json \
  -exec sed -i.uncheck -e 's/"files":{[^}]*}/"files":{ }/' '{}' '+'

# Sometimes Rust sources start with #![...] attributes, and "smart" editors think
# it's a shebang and make them executable. Then brp-mangle-shebangs gets upset...
find -name '*.rs' -type f -perm /111 -exec chmod -v -x '{}' '+'

# The distro flags are only appropriate for the host, not our cross-targets,
# and they're not as fine-grained as the settings we choose for std vs rustc.
%if %defined build_rustflags
%global build_rustflags %{nil}
%endif

# These are similar to __cflags_arch_* in /usr/lib/rpm/redhat/macros
%global rustc_target_cpus %{lua: do
  local fedora = tonumber(rpm.expand("0%{?fedora}"))
  local rhel = tonumber(rpm.expand("0%{?rhel}"))
  local env =
    " RUSTC_TARGET_CPU_X86_64=x86-64" .. ((rhel >= 10) and "-v3" or (rhel == 9) and "-v2" or "")
    .. " RUSTC_TARGET_CPU_PPC64LE=" .. ((rhel >= 9) and "pwr9" or "pwr8")
    .. " RUSTC_TARGET_CPU_S390X=" ..
        ((rhel >= 9) and "z14" or (rhel == 8 or fedora >= 38) and "z13" or
         (fedora >= 26) and "zEC12" or (rhel == 7) and "z196" or "z10")
  print(env)
end}

# Set up shared environment variables for build/install/check
%global rust_env %{?rustflags:RUSTFLAGS="%{rustflags}"} %{rustc_target_cpus}
%if %without disabled_libssh2
# convince libssh2-sys to use the distro libssh2
%global rust_env %{?rust_env} LIBSSH2_SYS_USE_PKG_CONFIG=1
%endif
%global export_rust_env %{?rust_env:export %{rust_env}}

%build
%{export_rust_env}

%ifarch aarch64 %{arm} %{ix86}
# full debuginfo is exhausting memory; just do libstd for now
# https://github.com/rust-lang/rust/issues/45854
%define enable_debuginfo --debuginfo-level=0 --debuginfo-level-std=2
%else
%define enable_debuginfo --debuginfo-level=2
%endif

# Some builders have relatively little memory for their CPU count.
# At least 2GB per CPU is a good rule of thumb for building rustc.
ncpus=$(/usr/bin/getconf _NPROCESSORS_ONLN)
max_cpus=$(( ($(free -g | awk '/^Mem:/{print $2}') + 1) / 2 ))
if [ "$max_cpus" -ge 1 -a "$max_cpus" -lt "$ncpus" ]; then
  ncpus="$max_cpus"
fi

%if %defined mingw_targets
%define mingw_target_config %{shrink:
  --set target.i686-pc-windows-gnu.linker=%{mingw32_cc}
  --set target.i686-pc-windows-gnu.cc=%{mingw32_cc}
  --set target.i686-pc-windows-gnu.ar=%{mingw32_ar}
  --set target.i686-pc-windows-gnu.ranlib=%{mingw32_ranlib}
  --set target.i686-pc-windows-gnu.self-contained=false
  --set target.x86_64-pc-windows-gnu.linker=%{mingw64_cc}
  --set target.x86_64-pc-windows-gnu.cc=%{mingw64_cc}
  --set target.x86_64-pc-windows-gnu.ar=%{mingw64_ar}
  --set target.x86_64-pc-windows-gnu.ranlib=%{mingw64_ranlib}
  --set target.x86_64-pc-windows-gnu.self-contained=false
}
%endif

%if %defined wasm_targets
%if %with bundled_wasi_libc
%make_build --quiet -C %{wasi_libc_dir} MALLOC_IMPL=emmalloc CC=clang AR=llvm-ar NM=llvm-nm
%define wasm_target_config --set target.wasm32-wasi.wasi-root=%{wasi_libc_dir}/sysroot
%else
%define wasm_target_config %{shrink:
  --set target.wasm32-wasi.wasi-root=%{_prefix}/wasm32-wasi
  --set target.wasm32-wasi.self-contained=false
}
%endif
%endif

# Find the compiler-rt library for the Rust profiler_builtins crate.
%if 0%{?clang_major_version} >= 17
%if 0%{?mageia}
%ifarch %{arm32}
%define _gnu -gnueabihf
%endif
%define profiler %{clang_resource_dir}/lib/%{_arch}-%{_real_vendor}-linux%{?_gnu}/libclang_rt.profile.a
%else
%define profiler %{clang_resource_dir}/lib/%{_arch}-redhat-linux-gnu/libclang_rt.profile.a
%endif
%else
# The exact profiler path is version dependent..
%if 0%{?mageia}
clang_arch=%{_arch}
%ifarch armv7hl
clang_arch=armhf
%endif
%define profiler %{_libdir}/clang/%{clang_major_version}/lib/libclang_rt.profile-$clang_arch.a
%else
%define profiler %(echo %{_libdir}/clang/??/lib/libclang_rt.profile-*.a)
%endif
%endif
test -r "%{profiler}"

%configure --disable-option-checking \
  --libdir=%{common_libdir} \
  --build=%{rust_triple} --host=%{rust_triple} --target=%{rust_triple} \
  --set target.%{rust_triple}.linker=%{__cc} \
  --set target.%{rust_triple}.cc=%{__cc} \
  --set target.%{rust_triple}.cxx=%{__cxx} \
  --set target.%{rust_triple}.ar=%{__ar} \
  --set target.%{rust_triple}.ranlib=%{__ranlib} \
  --set target.%{rust_triple}.profiler="%{profiler}" \
  %{?mingw_target_config} \
  %{?wasm_target_config} \
  --python=%{__python3} \
  --local-rust-root=%{local_rust_root} \
  --set build.rustfmt=/bin/true \
  %{!?with_bundled_llvm: --llvm-root=%{llvm_root} \
    %{!?llvm_has_filecheck: --disable-codegen-tests} \
    %{!?with_llvm_static: --enable-llvm-link-shared } } \
  --disable-llvm-static-stdcpp \
  --disable-rpath \
  %{enable_debuginfo} \
  --set rust.codegen-units=1 \
  --set rust.lto=thin \
  --set build.build-stage=2 \
  --set build.doc-stage=2 \
  --set build.install-stage=2 \
  --set build.test-stage=2 \
  --enable-extended \
  --tools=cargo,clippy,rls,rust-analyzer,rustfmt,src \
  --enable-vendor \
  --enable-verbose-tests \
  --dist-compression-formats=gz \
  --release-channel=%{channel} \
  --release-description="%{?mageia:Mageia }%{?fedora:Fedora }%{?rhel:Red Hat }%{version}-%{release}"

%global runx %{__python3} ./x.py
%global runxk %{runx} --keep-stage=0 --keep-stage=1 

%if %with rustc_pgo
# Build the compiler with profile instrumentation
PROFRAW="$PWD/build/profiles"
PROFDATA="$PWD/build/rustc.profdata"
mkdir -p "$PROFRAW"
%{runx} build -j "$ncpus" sysroot --rust-profile-generate="$PROFRAW"
# Build cargo as a workload to generate compiler profiles
env LLVM_PROFILE_FILE="$PROFRAW/default_%%m_%%p.profraw" %{runxk} build cargo
llvm-profdata merge -o "$PROFDATA" "$PROFRAW"
rm -r "$PROFRAW" build/%{rust_triple}/stage2*/
# Rebuild the compiler using the profile data
%{runx} build -j "$ncpus" sysroot --rust-profile-use="$PROFDATA"
%else
# Build the compiler without PGO
%{runx} build -j "$ncpus" sysroot
%endif

# Build everything else normally
%{runxk} build
%{runxk} doc 

for triple in %{?all_targets} ; do
  %{runxk} build --target=$triple std
done

%install
%if 0%{?rhel} && 0%{?rhel} <= 9
%{?set_build_flags}
%endif
%{export_rust_env}

DESTDIR=%{buildroot} %{runxk} install

for triple in %{?all_targets} ; do
  DESTDIR=%{buildroot} %{runxk} install --target=$triple std
done

# The rls stub doesn't have an install target, but we can just copy it.
%{__install} -t %{buildroot}%{_bindir} build/%{rust_triple}/stage2-tools-bin/rls

# These are transient files used by x.py dist and install
rm -rf ./build/dist/ ./build/tmp/

# Some of the components duplicate-install binaries, leaving backups we don't want
rm -f %{buildroot}%{_bindir}/*.old

# 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.
find %{buildroot}%{rustlibdir}/%{rust_triple}/lib/ -maxdepth 1 -type f -name '*.so' |
while read lib; do
 lib2="%{buildroot}%{_libdir}/${lib##*/}"
 if [ -f "$lib2" ]; then
   # make sure they're actually identical!
   cmp "$lib" "$lib2"
   ln -v -f -r -s -T "$lib2" "$lib"
 fi
done

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

# Remove backup files from %%configure munging
find %{buildroot}%{rustlibdir} -type f -name '*.orig' -exec rm -v '{}' '+'

# https://fedoraproject.org/wiki/Changes/Make_ambiguous_python_shebangs_error
# We don't actually need to ship any of those python scripts in rust-src anyway.
find %{buildroot}%{rustlibdir}/src -type f -name '*.py' -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
rm -f %{buildroot}%{_docdir}/%{name}/LICENSE-APACHE
rm -f %{buildroot}%{_docdir}/%{name}/LICENSE-MIT
rm -f %{buildroot}%{_docdir}/%{name}/LICENSE-THIRD-PARTY
rm -f %{buildroot}%{_docdir}/%{name}/*.old

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

# Create the path for crate-devel packages
mkdir -p %{buildroot}%{_datadir}/cargo/registry

# Cargo no longer builds its own documentation
# https://github.com/rust-lang/cargo/pull/4904
mkdir -p %{buildroot}%{_docdir}/cargo
ln -sT ../rust/html/cargo/ %{buildroot}%{_docdir}/cargo/html

# We don't want Rust copies of LLVM tools (rust-lld, rust-llvm-dwp)
rm -f %{buildroot}%{rustlibdir}/%{rust_triple}/bin/rust-ll*

%if 0%{?rhel}
# This allows users to build packages using Rust Toolset.
%{__install} -D -m 644 %{S:100} %{buildroot}%{rpmmacrodir}/macros.rust-toolset
%endif


%check
%if 0%{?rhel} && 0%{?rhel} <= 9
%{?set_build_flags}
%endif
%{export_rust_env}

# Sanity-check the installed binaries, debuginfo-stripped and all.
%{buildroot}%{_bindir}/cargo new build/hello-world
(
  cd build/hello-world
  export RUSTC=%{buildroot}%{_bindir}/rustc \
    LD_LIBRARY_PATH="%{buildroot}%{_libdir}:$LD_LIBRARY_PATH"
  %{buildroot}%{_bindir}/cargo run --verbose

  # Sanity-check that code-coverage builds and runs
  env RUSTFLAGS="-Cinstrument-coverage" %{buildroot}%{_bindir}/cargo run --verbose
  test -r default_*.profraw

  # Try a build sanity-check for other std-enabled targets
  for triple in %{?mingw_targets} %{?wasm_targets}; do
    %{buildroot}%{_bindir}/cargo build --verbose --target=$triple
  done
)

# The results are not stable on koji, so mask errors and just log it.
# Some of the larger test artifacts are manually cleaned to save space.

# Bootstrap is excluded because it's not something we ship, and a lot of its
# tests are geared toward the upstream CI environment.
%{runxk} test --no-fail-fast --skip src/bootstrap || :
rm -rf "./build/%{rust_triple}/test/"

%{runxk} test --no-fail-fast cargo || :
rm -rf "./build/%{rust_triple}/stage2-tools/%{rust_triple}/cit/"

%{runxk} test --no-fail-fast clippy || :

%{runxk} test --no-fail-fast rust-analyzer || :

%{runxk} test --no-fail-fast rustfmt || :


%{?ldconfig_scriptlets}


%files
%license COPYRIGHT LICENSE-APACHE LICENSE-MIT
%doc README.md
%{_bindir}/rustc
%{_bindir}/rustdoc
%{_libdir}/*.so
%{_libexecdir}/rust-analyzer-proc-macro-srv
%{_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

%global target_files()      \
%files std-static-%1        \
%dir %{rustlibdir}          \
%dir %{rustlibdir}/%1       \
%dir %{rustlibdir}/%1/lib   \
%{rustlibdir}/%1/lib/*.rlib

%if %target_enabled i686-pc-windows-gnu
%target_files i686-pc-windows-gnu
%{rustlibdir}/i686-pc-windows-gnu/lib/rs*.o
%exclude %{rustlibdir}/i686-pc-windows-gnu/lib/*.dll
%exclude %{rustlibdir}/i686-pc-windows-gnu/lib/*.dll.a
%endif

%if %target_enabled x86_64-pc-windows-gnu
%target_files x86_64-pc-windows-gnu
%{rustlibdir}/x86_64-pc-windows-gnu/lib/rs*.o
%exclude %{rustlibdir}/x86_64-pc-windows-gnu/lib/*.dll
%exclude %{rustlibdir}/x86_64-pc-windows-gnu/lib/*.dll.a
%endif

%if %target_enabled wasm32-unknown-unknown
%target_files wasm32-unknown-unknown
%endif

%if %target_enabled wasm32-wasi
%target_files wasm32-wasi
%if %with bundled_wasi_libc
%dir %{rustlibdir}/wasm32-wasi/lib/self-contained
%{rustlibdir}/wasm32-wasi/lib/self-contained/crt*.o
%{rustlibdir}/wasm32-wasi/lib/self-contained/libc.a
%endif
%endif

%if %target_enabled x86_64-unknown-none
%target_files x86_64-unknown-none
%endif

%if %target_enabled x86_64-unknown-uefi
%target_files x86_64-unknown-uefi
%endif


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


%files gdb
%{_bindir}/rust-gdb
%{rustlibdir}/etc/gdb_*
%exclude %{_bindir}/rust-gdbgui


%files lldb
%{_bindir}/rust-lldb
%{rustlibdir}/etc/lldb_*


%files doc
%docdir %{_docdir}/%{name}
%dir %{_docdir}/%{name}
%{_docdir}/%{name}/html
# former cargo-doc
%docdir %{_docdir}/cargo
%dir %{_docdir}/cargo
%{_docdir}/cargo/html


%files -n cargo
%license src/tools/cargo/LICENSE-{APACHE,MIT,THIRD-PARTY}
%doc src/tools/cargo/README.md
%{_bindir}/cargo
%{_mandir}/man1/cargo*.1*
%{_sysconfdir}/bash_completion.d/cargo
%{_datadir}/zsh/site-functions/_cargo
%dir %{_datadir}/cargo
%dir %{_datadir}/cargo/registry


%files -n rustfmt
%{_bindir}/rustfmt
%{_bindir}/cargo-fmt
%doc src/tools/rustfmt/{README,CHANGELOG,Configurations}.md
%license src/tools/rustfmt/LICENSE-{APACHE,MIT}


%files analyzer
%{_bindir}/rls
%{_bindir}/rust-analyzer
%doc src/tools/rust-analyzer/README.md
%license src/tools/rust-analyzer/LICENSE-{APACHE,MIT}


%files -n clippy
%{_bindir}/cargo-clippy
%{_bindir}/clippy-driver
%doc src/tools/clippy/{README.md,CHANGELOG.md}
%license src/tools/clippy/LICENSE-{APACHE,MIT}


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


%if 0%{?rhel}
%files toolset
%{rpmmacrodir}/macros.rust-toolset
%endif