build system: Changes for xc32 compiler #1264
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Three changes are needed to accommodate xc32 compiler build: - optimized build flag other than -Os added CFLAGS_OPTIMIZED that defaults to -Os but can be overridden in boards - build without -lnosys added LIBS_GCC with default libraries that can be changed in boards - build without LD_FILE specification if LD_FILE is empty -Wl,-T options is not added to LDFLAGS
hathach
approved these changes
Dec 31, 2021
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Describe the PR
Three changes are needed to accommodate xc32 compiler build:
added CFLAGS_OPTIMIZED that defaults to
-Osbut can be overridden in boards-lnosysadded LIBS_GCC with default libraries that can be changed in boards
if LD_FILE is empty
-Wl,-Toptions is not added to LDFLAGSAdditional context
xc32 compiler for Microchip mips chips in free edition have some functional limitations like
lack of
-Osand-flto.It also provides linker script automatically so it does not have to be specified on command line.
It does not have nosys library that is not needed for bulild.