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Jason Merrill
authored
The dependency output for header unit modules is based on the absolute pathname of the header file, but that's not something that a makefile can portably refer to. This patch adds a .c++-header-unit target based on the header name relative to an element of the include path. libcpp/ChangeLog: * internal.h (_cpp_get_file_dir): Declare. * files.cc (_cpp_get_file_dir): New fn. * mkdeps.cc (make_write): Use it. gcc/testsuite/ChangeLog: * g++.dg/modules/dep-4.H: New test.