add fake try_compile and try outputting yaml log

Author: ryanofsky

CMakeLists.txt

@@ -36,6 +36,18 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
   set(CMAKE_CXX_STANDARD_REQUIRED YES)
 endif()
 
+# Failing inline try_compile example
+try_compile(HAS_BOGUS
+    "${CMAKE_BINARY_DIR}/try_bogus"   # binary dir for the test
+    SOURCE "int main() { return bogus(); }"
+)
+
+if(HAS_BOGUS)
+  message(STATUS "bogus() exists")
+else()
+  message(STATUS "bogus() not found (expected failure)")
+endif()
+
 include("cmake/compat_find.cmake")
 
 find_package(Threads REQUIRED)

ci/scripts/ci.sh

@@ -47,6 +47,14 @@ if ! cmake "$src_dir" "${cmake_args[@]}"; then
   # Could add --trace / --trace-expand here too but they are very verbose.
   cmake_args+=(--debug-find --debug-trycompile --log-level=DEBUG -DCMAKE_TRY_COMPILE_NO_CLEAN=ON)
   cmake "$src_dir" "${cmake_args[@]}" || echo "cmake exited with $?"
+  echo "=== CMakeConfigureLog.yaml ==="
+  if [ -f CMakeFiles/CMakeConfigureLog.yaml ]; then
+    cat CMakeFiles/CMakeConfigureLog.yaml
+  else
+    echo "(no configure log found)"
+  fi
+
+
   find . -ls
   find . -type f -name CMakeOutput.log -exec sh -c 'echo "--- {} ---"; cat "{}"' \;
   find . -type f -name CMakeError.log -exec sh -c 'echo "--- {} ---"; cat "{}"' \;