红帽全球峰会9.2. RubyGems spec file conventions
A RubyGems spec file must meet the following conventions:
-
The file contains a definition of
%{gem_name}, which is the name from the gem’s specification. - The source of the package must be the full URL to the released gem archive.
- The version of the package must be the gem’s version.
The file contains the following
BuildRequires:directive:BuildRequires: rubygems-develThe
rubygems-develpackage contains macros needed for a build.-
The file does not contain any additional
rubygem(foo)RequiresorProvidesdirectives because these directives are autogenerated from the gem metadata.
9.2.1. RubyGems spec file example
The following is the RubyGems-specific part of an example spec file for building gems. The remaining part of the spec file follows the generic guidelines.
A RubyGems-specific part of an example spec file
%prep
%setup -q -n %{gem_name}-%{version}
# Modify the gemspec if necessary
# Also apply patches to code if necessary
%patch 0 -p1
%build
# Create the gem as gem install only works on a gem file
gem build ../%{gem_name}-%{version}.gemspec
# %%gem_install compiles any C extensions and installs the gem into ./%%gem_dir
# by default, so that we can move it into the buildroot in %%install
%gem_install
%install
mkdir -p %{buildroot}%{gem_dir}
cp -a ./%{gem_dir}/* %{buildroot}%{gem_dir}/
# If there were programs installed:
mkdir -p %{buildroot}%{_bindir}
cp -a ./%{_bindir}/* %{buildroot}%{_bindir}
# If there are C extensions, copy them to the extdir.
mkdir -p %{buildroot}%{gem_extdir_mri}
cp -a .%{gem_extdir_mri}/{gem.build_complete,*.so} %{buildroot}%{gem_extdir_mri}/9.2.2. RubyGems spec file directives
The following are the specifics of particular items in the RubyGems-specific part of the spec file.
| Directive | RubyGems specifics |
|---|---|
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RPM can directly unpack gem archives. The
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This section includes commands for building the software into machine code. The |
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The installation is performed into the |
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