Tests: make openmp-rpm test compatible with RHEL distros and collections

tests/openmp-rpm/main.fmf

@@ -1,6 +1,30 @@
 summary: Test build a simple RPM package to ensure that -fopenmp works
+test: "$WITH_SCL ./runtest.sh"
 require:
-  - dnf
-  - dnf-plugins-core
   - rpm-build
-test: ./runtest.sh
+adjust:
+  - because: "libomp not supported in s390x"
+    when: arch == s390x
+    enabled: false
+
+  - because: "Use yum in RHEL < 8"
+    require+:
+      - yum-utils
+    environment+:
+      BUILDDEP_CMD: "yum-builddep"
+    when: distro < rhel-8
+
+  - because: "Use dnf in RHEL >= 8, Fedora and CentOS"
+    require+:
+      - dnf-plugins-core
+    environment+:
+      BUILDDEP_CMD: "dnf builddep"
+    when: distro >= rhel-8 or distro != rhel
+
+  # Requirements for SCL-ized LLVM
+  - require+:
+      - llvm-toolset-13.0-build
+    when: "collection == llvm-toolset-13.0"
+  - require+:
+      - llvm-toolset-14.0-build
+    when: "collection == llvm-toolset-14.0"

tests/openmp-rpm/runtest.sh

@@ -2,5 +2,5 @@
 
 set -ex
 
-dnf -y build-dep test.spec
+${BUILDDEP_CMD} -y test.spec
 rpmbuild --define '_sourcedir .' --define '_builddir .' -bb test.spec

tests/openmp-rpm/test.spec

@@ -1,4 +1,5 @@
 %global toolchain clang
+%{?scl:%global scl_prefix %{scl}-}
 
 Name: test
 Version: 1
@@ -6,8 +7,8 @@ Release: 1
 Summary: Test package for checking that RPM packages using -fopenmp build correctly
 License: MIT
 
-BuildRequires: clang
-BuildRequires: libomp
+BuildRequires: %{?scl_prefix}clang
+BuildRequires: %{?scl_prefix}libomp
 
 Source0: test.c