[PATCH] D54334: [AVR] Automatically link CRT and libgcc from the system avr-gcc
Dylan McKay via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Fri Nov 9 10:59:34 PST 2018
dylanmckay created this revision.
dylanmckay added reviewers: aaron.ballman, kparzysz, asb, hfinkel.
This patch modifies the AVR toolchain so that if avr-gcc and avr-libc
are detected during compilation, the CRT, libgcc, libm, and libc anre
This matches avr-gcc's default behaviour, and the expected behaviour of
all C compilers - including the C runtime.
avr-gcc also needs a -mmcu specified in order to link runtime libraries.
The difference betwen this patch and avr-gcc is that this patch will
warn users whenever they compile without a runtime, as opposed to GCC,
which silently trims the runtime libs from the linker arguments when no
-mmcu is specified.
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