%global _trivial .0
%global _buildid .1

# https://ziglang.org/download/VERSION/release-notes.html#Support-Table
%global zig_arches x86_64 aarch64 riscv64 %{mips64}

# Signing key from https://ziglang.org/download/
%global public_key RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U

# AL2023 uses compat LLVM packages
%if 0%{?amzn}
%define llvm_compat 21
%endif

%global llvm_version 21.1.8

%bcond_with docs
%bcond_without macro
%bcond_without test

%global zig_cache_dir %{_builddir}/zig-cache

%global zig_build_options %{shrink: \
    --verbose \
    --release=fast \
    --summary all \
    \
    -Dtarget=native \
    -Dcpu=baseline \
    --zig-lib-dir lib \
    --build-id=sha1 \
    \
    --cache-dir "%{zig_cache_dir}" \
    --global-cache-dir "%{zig_cache_dir}" \
    \
    -Dversion-string="%{version}" \
    -Dstatic-llvm=false \
    -Denable-llvm=true \
    -Dno-langref=true \
    -Dstd-docs=false \
    -Dpie \
    -Dconfig_h="%{__cmake_builddir}/config.h" \
}
%global zig_install_options %zig_build_options %{shrink: \
    --prefix "%{_prefix}" \
}

Name:           zig
Version:        0.16.0
Release:        1%{?dist}%{?_trivial}%{?_buildid}
Summary:        Programming language for maintaining robust, optimal, and reusable software

License:        MIT AND NCSA AND LGPL-2.1-or-later AND LGPL-2.1-or-later WITH GCC-exception-2.0 AND GPL-2.0-or-later AND GPL-2.0-or-later WITH GCC-exception-2.0 AND BSD-3-Clause AND Inner-Net-2.0 AND ISC AND LicenseRef-Fedora-Public-Domain AND GFDL-1.1-or-later AND ZPL-2.1
URL:            https://ziglang.org

Source0:        %{url}/download/%{version}/%{name}-%{version}.tar.xz
Source1:        %{url}/download/%{version}/%{name}-%{version}.tar.xz.minisig
Source2:        macros.%{name}

# Remove native lib directories from rpath
# this is unlikely to be upstreamed in its current state because upstream
# wants to work around the shortcomings of NixOS
Patch0:         0001-remove-native-lib-directories-from-rpath.patch

BuildRequires:  gcc
BuildRequires:  gcc-c++
BuildRequires:  cmake
BuildRequires:  llvm%{?llvm_compat}-devel
BuildRequires:  clang%{?llvm_compat}-devel
BuildRequires:  lld%{?llvm_compat}-devel
BuildRequires:  compiler-rt%{?llvm_compat}
BuildRequires:  zlib-devel
BuildRequires:  libxml2-devel
# for man page generation
BuildRequires:  help2man
# for signature verification
BuildRequires:  minisign

%if 0%{?amzn}
BuildRequires:  gcc14
BuildRequires:  gcc14-c++
%global toolchain gcc14
%endif

%if %{with test}
# for testing
BuildRequires:  elfutils-libelf-devel
BuildRequires:  libstdc++-static
%endif

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

# These packages are bundled as source
Provides:       bundled(compiler-rt) = %{llvm_version}
Provides:       bundled(glibc) = 2.43
Provides:       bundled(libcxx) = %{llvm_version}
Provides:       bundled(libcxxabi) = %{llvm_version}
Provides:       bundled(libunwind) = %{llvm_version}
Provides:       bundled(mingw) = 3839e21b08807479a31d5a9764666f82ae2f0356
Provides:       bundled(musl) = 1.2.5
Provides:       bundled(wasi-libc) = d03829489904d38c624f6de9983190f1e5e7c9c5

ExclusiveArch:  %{zig_arches}

%description
Zig is an open-source programming language designed for robustness, optimality,
and clarity. This package provides the zig compiler and the associated runtime.

# The Zig stdlib only contains uncompiled code
%package libs
Summary:        %{name} Standard Library
BuildArch:      noarch

%description libs
%{name} Standard Library

%if %{with docs}
%package doc
Summary:        Documentation for %{name}
BuildArch:      noarch
Requires:       %{name} = %{version}

%description doc
Documentation for %{name}. For more information, visit %{url}
%endif

%if %{with macro}
%package        rpm-macros
Summary:        Common RPM macros for %{name}
Requires:       rpm
BuildArch:      noarch

%description    rpm-macros
This package contains common RPM macros for %{name}.
%endif

%prep
/usr/bin/minisign -V -m %{SOURCE0} -x %{SOURCE1} -P %{public_key}

%autosetup -p1

%build
export CCACHE_DISABLE=1

%cmake \
    -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
    -DCMAKE_C_FLAGS_RELWITHDEBINFO:STRING="-DNDEBUG -Wno-unused" \
    -DCMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING="-DNDEBUG -Wno-unused" \
    \
    -DZIG_EXTRA_BUILD_ARGS:STRING="--verbose;--build-id=sha1" \
    -DZIG_SHARED_LLVM:BOOL=true \
    -DZIG_PIE:BOOL=true \
    \
    -DZIG_TARGET_MCPU:STRING=baseline \
    -DZIG_TARGET_TRIPLE:STRING=native \
    \
    -DZIG_VERSION:STRING="%{version}"

# 1. Build the stage3 compiler using the C++ bootstrap code (no pre-existing zig needed).
echo "### Building stage3 bootstrap compiler... ###"
%cmake_build --target stage3

export PATH="%{_builddir}/%{name}-%{version}/%{__cmake_builddir}/stage3/bin:$PATH"
%cmake_build --target zigcpp
zig build %{zig_build_options}

# 2. Generate the manpage using the newly-built compiler.
echo "### Generating man page... ###"
LD_LIBRARY_PATH=%{_libdir} help2man --no-discard-stderr --no-info "./zig-out/bin/zig" --version-option=version --output=zig.1

%if %{with docs}
# 3. Use the newly made compiler to generate docs.
echo "### Building documentation... ###"
LD_LIBRARY_PATH=%{_libdir} ./zig-out/bin/zig build docs %{zig_build_options}
%endif

%install
# Use the newly built zig compiler to install itself into the buildroot.
echo "### Installing zig... ###"
LD_LIBRARY_PATH=%{_libdir} DESTDIR="%{buildroot}" ./zig-out/bin/zig build install %{zig_install_options}

# Install the man page.
echo "### Installing man page... ###"
install -D -pv -m 0644 -t %{buildroot}%{_mandir}/man1/ zig.1

%if %{with macro}
install -D -pv -m 0644 %{SOURCE2} %{buildroot}%{_rpmmacrodir}/macros.%{name}
%endif

%if %{with test}
%check
# Run reduced set of tests, based on the Zig CI
LD_LIBRARY_PATH=%{_libdir} "%{buildroot}%{_bindir}/zig" test test/behavior.zig -Itest
%endif

%files
%license LICENSE
%{_bindir}/zig
%{_mandir}/man1/%{name}.1.*

%files libs
%{_prefix}/lib/%{name}

%if %{with docs}
%files doc
%doc README.md
%doc zig-out/doc/langref.html
%doc zig-out/doc/std
%endif

%if %{with macro}
%files rpm-macros
%{_rpmmacrodir}/macros.%{name}
%endif

%changelog
* Sun Jul 06 2025 yxwang5db2 - 0.16.0-1.amzn2023.0.1
- Update to 0.16.0
- Switch to LLVM 21
- Update bundled glibc to 2.43