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# Don't build libgcc.a with debug info
LIBGCC2_DEBUG_CFLAGS =
# We provide our own implementation for __clear_cache, using a
# VxWorks specific entry point.
LIB2FUNCS_EXCLUDE += _clear_cache
# Arrange to have the correct target headers used when compiling
# libgcc. We specifically need to handle VxWorks system headers
# having names that collide with GCC's internal headers.
#
# For example, compiling gthr-vxworks.c #includes <taskLib.h>
# which in turn #includes <regs.h>, which exists both in the gcc
# source tree and as a VxWorks system header. We need that
# #include to get the VxWorks version, not the compiler one.
#
# We still need to make sure that the local libgcc headers prevail
# (e.g. ./unwind.h), and that gcc provided header files intended
# to be user visible eventually are visible as well (gcc/include
# and gcc/include-fixed).
#
# The latter are added unconditionally as -isystem during regular
# cross builds via the %I spec processing and search paths introduced
# by -B options. These take priority over whatever we can add here,
# even with -nostdinc, and end up at the tail of the search chain.
#
# We keep explicit options nevertheless, to accommodate canadian
# setups where the libraries are built with an installed cross compiler,
# without -B. Also note, incidentally, that the detection of duplicate
# paths differs between Windows and Linux hosts as the latter can perform
# inode based checks while the former may only rely on name comparisons.
LIBGCC2_INCLUDES = -nostdinc -I. \
$(if $(findstring vxworks7, $(target_noncanonical)), \
-I$(VSB_DIR)/h -I$(VSB_DIR)/share/h -I=/system -I=/public, \
-I=/ -I=/wrn/coreip) \
-isystem $(MULTIBUILDTOP)../../gcc/include-fixed$(MULTISUBDIR) \
-isystem $(MULTIBUILDTOP)../../gcc/include
# Use these also for the vxcrstuff objects (.e.g for version.h), on top of
# the options possibly already set specifically for the target:
CRTSTUFF_T_CFLAGS += $(LIBGCC2_INCLUDES)
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