Improve error handling

cmake/TryCompileShaders.cmake.in

@@ -2,5 +2,5 @@ execute_process(COMMAND "@BASH_EXECUTABLE@" CompileShaders.sh "@SHADER_OUTPUT_DE
                 WORKING_DIRECTORY "@SCRIPT_FOLDER@"
                 RESULT_VARIABLE res_var)
 if(NOT "${res_var}" STREQUAL "0")
-  message(FATAL_ERROR "Failed to recompile shaders")
+  message(FATAL_ERROR "Failed to recompile shaders. Result: ${res_val}")
 endif()

openVulkanoCpp/CMakeLists.txt

@@ -15,6 +15,9 @@ if ("${BASH_EXECUTABLE}" STREQUAL "")
     find_program(BASH_PROGRAM bash NO_CACHE REQUIRED)
     set(BASH_EXECUTABLE ${BASH_PROGRAM} CACHE FILEPATH "Path to bash executable" FORCE)
 endif()
+if ("${BASH_EXECUTABLE}" STREQUAL "") # fallback to just bash and hope it works, this way at least we should get some proper error
+    set(BASH_EXECUTABLE "bash" CACHE FILEPATH "Path to bash executable" FORCE)
+endif()
 # go from openVulkano/OpenVulkanoCpp to openVulkano
 cmake_path(GET CMAKE_CURRENT_SOURCE_DIR PARENT_PATH ROOT_FOLDER)
 set(SCRIPT_FOLDER "${ROOT_FOLDER}/Scripts")