← Back
Editing: conditionalbuilds.md
--- layout: default title: rpm.org - Conditional Builds --- # Conditional Builds Rpmbuild supports conditional package builds with the command line switches `--with` and `--without`. Here is an example of how to enable gnutls and disable openssl support: ``` $ rpmbuild -ba newpackage.spec --with gnutls --without openssl ``` ## Creating build conditionals ### Using `%bcond` (new in rpm 4.17.1) To create a build conditional in a spec file, use the `%bcond` macro at the beginning of the file, specifying the name of the conditional and its default value: ``` # Create a "gnutls" build conditional, enabled by default: %bcond gnutls 1 # Create a "bootstrap" build conditional, disabled by default: %bcond bootstrap 0 ``` The default can be any numeric expression. To pass a complex expression as a single argument, you can enclose it in `%[...]` . ``` # Create `--with openssl` and `--without openssl` cli options, with the default # being the inverse of the gnutls setting: %bcond openssl %{without gnutls} # Create `extra_tests` bcond, enabled by default if both of the other # conditinals # are enabled: %bcond extra_tests %[%{with gnutls} && %{with sqlite}] ``` ### Using `%bcond_with` and `%bcond_without` Build conditionals can also be created using the macros `%bcond_with` and `%bcond_without`. These macros *create command line options*. When you add an option to build with feature X, it implies that the default is to build without. These macros have historically confused a lot of people (which is why `%bcond` was added) but are not hard to use once you think in terms of adding command line switches: ``` # Create an option to build with gnutls (`--with gnutls`), thus default to # building without it %bcond_with gnutls # Create an option to build without openssl (`--without openssl`), thus default # building with it %bcond_without openssl ``` To change the default, change the command line switch from `with` to `without` or vice versa. The remainder of the spec file can be left unchanged. ## Check whether an option is enabled or disabled To make parts of the spec file conditional depending on the command-line switch, you can use the `%{with foo}` macro or its counterpart, `%{without foo}`: ``` %if %{with gnutls} BuildRequires: gnutls-devel %endif %if %{with openssl} BuildRequires: openssl-devel %endif ``` Alternatively, you can test the presence (or lack thereof) of `%with_foo` macros which is nicer in other situations, e.g.: ``` %configure \ %{?with_static:--enable-static} \ %{!?with_static:--disable-static} ``` Always test for the `with`-condition, not the `without`-counterpart! ## References * [macros](https://github.com/rpm-software-management/rpm/blob/master/macros.in)
Save File
Cancel