take into account location of header files of dependencies in toolchain method that defines search path for header files in build environment#5041

bedroge merged 1 commit intoeasybuilders:developeasybuilders/easybuild-framework:developfrom

boegel:fix_toolchain_add_dependency_cpp_headersboegel/easybuild-framework:fix_toolchain_add_dependency_cpp_headersCopy head branch name to clipboard