Add a test for compiling with the fedora compiler and linker flags

fedora-flags/hello.c

@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+void hello() {
+  printf("Hello World\n");
+}

fedora-flags/hello.cpp

@@ -0,0 +1,5 @@
+#include <iostream>
+
+void hello() {
+  std::cout << "Hello World\n";
+}

fedora-flags/main.c

@@ -0,0 +1,6 @@
+void hello();
+
+int main(int argc, char **argv) {
+  hello();
+  return 0;
+}

fedora-flags/main.cpp

@@ -0,0 +1,6 @@
+void hello();
+
+int main(int argc, char **argv) {
+  hello();
+  return 0;
+}

fedora-flags/runtest.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -ex pipefail
+
+cflags=`rpm -D '%toolchain clang' -E %{build_cflags}`
+cxxflags=`rpm -D '%toolchain clang' -E %{build_cxxflags}`
+ldflags=`rpm -D '%toolchain clang' -E %{build_ldflags}`
+
+
+# Test a c program
+clang $cflags -c hello.c -o hello.o
+clang $cflags -c main.c -o main.o
+clang $ldflags -o hello main.o hello.o
+./hello | grep "Hello World"
+
+# Test a cxx program
+clang++ $cxxflags -c hello.cpp -o hello-cpp.o
+clang++ $cxxflags -c main.cpp -o main-cpp.o
+clang++ $ldflags -o hello-cpp main-cpp.o hello-cpp.o
+./hello-cpp | grep "Hello World"

tests-clang.yml

@@ -20,8 +20,12 @@
       - libcxx-devel
       - glibc-devel
       - gcc
+        # Required for fedora-flags:
+      - annobin
+      - redhat-rpm-config
     tests:
       - rhbz_1657544
       - rhbz_1647130
       - rhbz_1794936
       - llvm-toolchain
+      - fedora-flags