204 lines
6.4 KiB
RPMSpec
204 lines
6.4 KiB
RPMSpec
# Build HTML docs from markdown using pandoc?
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%bcond_without html_docs
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Name: gn
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# Upstream uses the number of commits in the git history as the version number.
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# See gn --version, which outputs something like “1874 (2b683eff)”. The commit
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# position and short commit hash in this string come from “git describe HEAD
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# --match initial-commit”; see build/gen.py. This means that a complete git
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# checkout is required to establish the version number; the information is not
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# in the tarball! This is terribly inconvenient. See
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# https://bugs.chromium.org/p/gn/issues/detail?id=3.
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#
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# As a result, it is necessary to use our custom update-version script,
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# supplying the new full commit hash as the sole argument or providing no
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# arguments to select the latest commit. This will:
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# 1. Clone the git repository from the Internet (a substantial download)
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# 2. Run build/gen.py to generate last_commit_position.h, the header with
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# version information, and copy it into the same directory as the script
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# 3. Modify the commit and access macros and the Version field in this spec
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# file.
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# 4. Download the source tarball (spectool -g)
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# 5. Update the sources (fedpkg new-sources %%{commit}.tar.gz)
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# 6. Stage all changes in git
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# 7. Commit the changes
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#
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# See https://gn.googlesource.com/gn/+log for the latest changes.
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%global commit cc28efe62ef0c2fb32455f414a29c4a55bb7fbc4
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%global access 20220714
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%global shortcommit %(echo '%{commit}' | cut -b -12)
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%global position 2064
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Version: %{position}^%{access}git%{shortcommit}
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Release: %autorelease
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Summary: Meta-build system that generates build files for Ninja
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# The entire source is BSD-3-Clause, except:
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# - src/base/third_party/icu/ is (Unicode AND ICU); see
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# src/base/third_party/icu/LICENSE and also the header comment in
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# src/base/third_party/icu/icu_utf.h.
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#
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# Note that src/util/test/gn_test.cc, which is licensed Apache-2.0, does not
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# contribute to the binary RPMs, only to the gn_unittests executable, which is
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# not installed; you may verify this with:
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# gdb -ex 'set pagination off' -ex 'info sources' gn | grep -F gn_test.cc
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License: BSD-3-Clause AND Unicode AND ICU
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URL: https://gn.googlesource.com/gn
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Source0: %{url}/+archive/%{commit}.tar.gz#/gn-%{shortcommit}.tar.gz
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# Generated using script update-version:
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Source1: last_commit_position.h
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Source2: update-version
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# Stop overriding optimization flags; not sent upstream because this is
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# intentional on their part
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Patch: gn-0153d369-no-O3.patch
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BuildRequires: python3-devel
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BuildRequires: ninja-build
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BuildRequires: gcc-c++
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# For RPM macros:
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BuildRequires: emacs-common
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%if %{with html_docs}
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BuildRequires: pandoc
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BuildRequires: parallel
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%endif
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BuildRequires: help2man
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Requires: vim-filesystem
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Requires: python3
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Provides: vim-gn = %{version}-%{release}
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Requires: emacs-filesystem >= %{_emacs_version}
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Provides: emacs-gn = %{version}-%{release}
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# src/base/third_party/icu/icu_utf.h:
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#
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# This file has the relevant components from ICU copied to handle basic
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# UTF8/16/32 conversions. Components are copied from umachine.h, utf.h,
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# utf8.h, and utf16.h into icu_utf.h.
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#
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# The forked, bundled ICU components are copied from Chromium. Because of the
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# downstream changes (primarily, changing namespaces and symbol prefixes),
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# there is no clear path to unbundling.
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#
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# See src/base/third_party/icu/README.chromium, from which the version number
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# is taken.
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Provides: bundled(icu) = 60
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%description
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GN is a meta-build system that generates build files for Ninja.
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%package doc
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Summary: Documentation for GN
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BuildArch: noarch
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%description doc
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The gn-doc package contains detailed documentation for GN.
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%prep
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%autosetup -c -n gn-%{commit} -p1
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# Use pre-generated last_commit_position.h.
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mkdir -p ./out
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cp -vp '%{SOURCE1}' ./out
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# Copy and rename vim extensions readme for use in the main documentation
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# directory.
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cp -vp misc/vim/README.md README-vim.md
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# Fix shebangs in examples and such.
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%py3_shebang_fix .
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%build
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AR='gcc-ar'; export AR
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%set_build_flags
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# Both --use-icf and --use-lto add compiler flags that only work with clang++,
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# not with g++. We do get LTO on Fedora anyway, since we respect the
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# distribution’s build flags.
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%{python3} build/gen.py \
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--no-last-commit-position \
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--no-strip \
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--no-static-libstdc++
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ninja -C out -v
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%if %{with html_docs}
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# There is a script, misc/help_as_html.py, that generates some HTML help, but
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# pandoc does a better job and we can cover more Markdown sources.
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find . -type f -name '*.md' | parallel -v pandoc -o '{.}.html' '{}'
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%endif
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help2man \
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--name='%{summary}' \
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--version-string="gn $(./out/gn --version)" \
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--no-info \
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./out/gn |
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# Clean up a couple of stray binary bytes in the help output
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tr -d '\302\240' |
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# Format the entries within the sections as tagged paragraphs, and italicise
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# [placeholders in square brackets].
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sed -r -e 's/(^[[:alnum:]_]+:)/.TP\n.B \1\n/' \
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-e 's/\[([^]]+)\]/\\fI[\1]\\fR/g' > out/gn.1
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%install
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install -t '%{buildroot}%{_bindir}' -D -p out/gn
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install -d '%{buildroot}%{_datadir}/vim/vimfiles'
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cp -vrp misc/vim/* '%{buildroot}%{_datadir}/vim/vimfiles'
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find '%{buildroot}%{_datadir}/vim/vimfiles' \
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-type f -name 'README.*' -print -delete
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%py_byte_compile %{python3} '%{buildroot}%{_datadir}/vim/vimfiles/gn-format.py'
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install -t '%{buildroot}%{_emacs_sitestartdir}' -D -p -m 0644 misc/emacs/*.el
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install -t '%{buildroot}%{_mandir}/man1' -D -m 0644 -p out/gn.1
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%check
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out/gn_unittests
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# Verify consistency of the version header with the spec file
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grep -E '^#define[[:blank:]]+LAST_COMMIT_POSITION_NUM[[:blank:]]+'\
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'%{position}[[:blank:]]*' \
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'out/last_commit_position.h' >/dev/null
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grep -E '^#define[[:blank:]]+LAST_COMMIT_POSITION[[:blank:]]+'\
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'"%{position} \(%{shortcommit}\)"[[:blank:]]*' \
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'out/last_commit_position.h' >/dev/null
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%files
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%license LICENSE
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%{_bindir}/gn
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%{_mandir}/man1/gn.1*
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%{_datadir}/vim/vimfiles/gn-format.py
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%{_datadir}/vim/vimfiles/autoload/gn.vim
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%{_datadir}/vim/vimfiles/ftdetect/gnfiletype.vim
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%{_datadir}/vim/vimfiles/ftplugin/gn.vim
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%{_datadir}/vim/vimfiles/syntax/gn.vim
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%{_emacs_sitestartdir}/gn-mode.el
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%files doc
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%license LICENSE src/base/third_party/icu/README.chromium
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%doc AUTHORS
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%doc OWNERS
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%doc README*.md
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%if %{with html_docs}
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%doc README*.html
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%endif
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%doc docs
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%doc examples
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%doc infra
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%doc tools
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%changelog
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%autochangelog
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