Fix a bug with #1954. If generating the .o failed due to a non-existent dependency, the .d file wasn't regenerated (e.g. for some #include "foo.h", if the build failed because foo.h didn't exist then removing the #include wouldn't allow the build to proceed)
Clarify the error message when a dependency file doesn't exist by allowing scaninc to ignore it (example below)
Silence some warnings when a .d file doesn't exist yet
Silence some warnings for -Wunqualified-std-cast-call
Explicitly default KEEP_TEMPS to 0
Example -- given #include "foo.h" in parent.c where foo.h doesn't exist...
before:
make: *** No rule to make target `src/foo.h', needed by `build/emerald/src/parent.o'. Stop.
after:
src/parent.c:<line_num>:<col_num>: fatal error: foo.h: No such file or directory
<line_num> | #include "foo.h"
.ofailed due to a non-existent dependency, the.dfile wasn't regenerated (e.g. for some#include "foo.h", if the build failed becausefoo.hdidn't exist then removing the#includewouldn't allow the build to proceed).dfile doesn't exist yet-Wunqualified-std-cast-callKEEP_TEMPSto0Example -- given
#include "foo.h"inparent.cwherefoo.hdoesn't exist... before:after: