diff --git a/wlcs.spec b/wlcs.spec
index 72d00f0..7dca8f9 100644
--- a/wlcs.spec
+++ b/wlcs.spec
@@ -83,7 +83,18 @@ SourceLicense:  %{shrink:
 URL:            https://github.com/MirServer/wlcs
 Source:         %{url}/archive/v%{version}/wlcs-%{version}.tar.gz
 
-BuildRequires:  cmake
+BuildSystem:    cmake
+# WLCS_FATAL_COMPILE_WARNINGS: makes sense for upstream CI, but too strict for
+#                              downstream packaging
+BuildOption(conf): %{shrink:
+    -DWLCS_BUILD_ASAN=%{?with_asan:ON}%{?!with_asan:OFF}
+    -DWLCS_BUILD_TSAN=%{?with_tsan:ON}%{?!with_tsan:OFF}
+    -DWLCS_BUILD_UBSAN=%{?with_ubsan:ON}%{?!with_ubsan:OFF}
+    -DWLCS_FATAL_COMPILE_WARNINGS:BOOL=OFF
+    }
+# We have built a test suite for compositors, but we have no tests for the test
+# suite, i.e., %%ctest would find no tests and there is nothing useful we could
+# do in %%check.
 
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
@@ -134,33 +145,6 @@ The wlcs-devel package contains libraries and header files for developing
 Wayland compositor tests that use wlcs.
 
 
-%prep
-%autosetup
-
-
-%conf
-# WLCS_FATAL_COMPILE_WARNINGS: makes sense for upstream CI, but too strict for
-#                              downstream packaging
-%cmake \
-    -DWLCS_BUILD_ASAN=%{?with_asan:ON}%{?!with_asan:OFF} \
-    -DWLCS_BUILD_TSAN=%{?with_tsan:ON}%{?!with_tsan:OFF} \
-    -DWLCS_BUILD_UBSAN=%{?with_ubsan:ON}%{?!with_ubsan:OFF} \
-    -DWLCS_FATAL_COMPILE_WARNINGS:BOOL=OFF
-
-
-%build
-%cmake_build
-
-
-%install
-%cmake_install
-
-
-# We have built a test suite for compositors, but we have no tests for the test
-# suite, i.e., %%ctest would find no tests and there is nothing useful we could
-# do in %%check.
-
-
 %files
 %license COPYING.*
 %doc README.rst