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Editing: buildprocess.md
--- layout: default title: rpm.org - Package Build Process --- # Package Build Process ## Overview * Unpack srpm/tar (optional) * Parse the [spec](spec.md) * If buildarch detected parse spec multiple times - once for each arch with `_target_cpu` macro set * Build will iterate over all the spec variants and build multiple versions * Check static build requires * Execute present [build scriptlets](spec.md#build-scriptlets) * `%prep` * `%generate_buildrequires` * re-check build requires - stop build on errors * `%conf` * `%build` * `%install` * Read [dynamic spec parts](dynamic_specs.md) * `%check` * Process files * Turn [%files](spec.md#files-section) lines into actual files (evaluate globs) * Read from -f param * Run [file classifier](dependency_generators.md#file-attributes) * Run [dependency generators](dependency_generators.md) * Check packaged files against install root * Create packages * Clean up * %clean ## Tunables The build process can be tuned and tweaked in lots of ways via macro configurables. ### Parallelism Various aspects of run in parallel on SMP systems. Rpm estimates the number of processes/threads to use based on detected resources and normally there's no need to touch these but sometimes it's necessary to work around buggy make-files, tune the parameters for an unusual compilation resource usage or such. Macro name | Description ------------------------|------------ `%_smp_ncpus_max` | Maximum number of CPUs `%_smp_nthreads_max` | Maximum number of threads `%_smp_build_ncpus` | Number of CPUs to use for building `%_smp_build_nthreads` | Number of threads to use for building `%_smp_tasksize_proc` | Assumed task size of a process `%_smp_tasksize_thread` | Assumed task size of a thread ### Package generation Macro name | Description --------------------------------|------------ `%_binary_filedigest_algorithm` | Compression algorithm of binary packages `%_source_filedigest_algorithm` | Compression algorithm of source packages `%_changelog_trimage` | Maximum age of `%changelog` entries `%_changelog_trimtime` | Cut-off date of `%changelog` entries ### Debuginfo Macro name | Description ---------------------------|------------- `%_enable_debug_packages` | Enable generation of debuginfo packages `%_include_minidebuginfo` | Include minimal debuginfo in binaries directly `%_include_gdb_index` | Include a `.gdb_index` section to `.debug` files `%_build_id_links` | BuildID link generation: `none`/`alldebug`/`separate`/`compat` `%_unique_build_ids` | Use version info to seed the BuildIDs `%_unique_debug_names` | Use version info to differentiate .debug files `%_unique_debug_srcs` | Use version info to differentiate debug sources `%_debugsource_packages` | Generate a separate sub-package for debug sources `%_debuginfo_subpackages` | Generate debuginfo packages per sub-package `%_no_recompute_build_ids` | Preserve pre-existing BuildIDs ### Packaging hygiene Various packaging sanity check overrides for dealing with legacy content. Macro name | Description ------------------------------------------------|------------ `%_unpackaged_files_terminate_build` | Excess files in buildroot terminates build `%_duplicate_files_terminate_build` | Duplicates in `%files` terminates build `%_missing_doc_files_terminate_build` | Missing `%doc` files terminates build `%_empty_manifest_terminate_build` | Empty `%files -f` manifest terminates build `%_binaries_in_noarch_packages_terminate_build` | ELF binaries in noarch packages terminates build `%_invalid_encoding_terminates_build` | Non-UTF8 encoding in package data terminates build `%_wrong_version_format_terminate_build` | Invalid version format in dependencies terminates build `%_missing_build_ids_terminate_build` | ELF files without BuildIDs terminates builds (if debuginfo creation enabled) `%_nonzero_exit_pkgcheck_terminate_build` | Package check program failing terminates build `%_build_pkgcheck` | Progam to run on each generated binary package `%_build_pkcheck_set` | Program to run on the generated binary package set ### Reproducability Macro name | Description --------------------------------------|----------- `%source_date_epoch_from_changelog` | Set `SOURCE_DATE_EPOCH` from latest `%changelog` entry `%use_source_date_epoch_as_buildtime` | Set package BuildTime to `SOURCE_DATE_EPOCH` `%clamp_mtime_to_source_date_epoch` | Ensure file timestamps are not newer than `SOURCE_DATE_EPOCH` ### Vendor defaults These can be used to automatically populate some common spec tags without changing the spec itself. Macro name | Description ----------------|------------ `%bugurl` | BugURL tag `%distribution` | Distribution tag `%disturl` | DistURL tag `%disttag` | DistTag tag `%packager` | Packager tag `%vendor` | Vendor tag ### Dependencies See [dependency generators](dependency_generators.md).
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