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      1 # Don't build libgcc.a with debug info
      2 LIBGCC2_DEBUG_CFLAGS =
      3 
      4 # We provide our own implementation for __clear_cache, using a
      5 # VxWorks specific entry point.
      6 LIB2FUNCS_EXCLUDE += _clear_cache
      7 
      8 # Arrange to have the correct target headers used when compiling
      9 # libgcc.  We specifically need to handle VxWorks system headers
     10 # having names that collide with GCC's internal headers.
     11 #
     12 # For example, compiling gthr-vxworks.c #includes <taskLib.h>
     13 # which in turn #includes <regs.h>, which exists both in the gcc
     14 # source tree and as a VxWorks system header.  We need that
     15 # #include to get the VxWorks version, not the compiler one.
     16 #
     17 # We still need to make sure that the local libgcc headers prevail
     18 # (e.g. ./unwind.h), and that gcc provided header files intended
     19 # to be user visible eventually are visible as well (gcc/include
     20 # and gcc/include-fixed).
     21 #
     22 # The latter are added unconditionally as -isystem during regular
     23 # cross builds via the %I spec processing and search paths introduced
     24 # by -B options. These take priority over whatever we can add here,
     25 # even with -nostdinc, and end up at the tail of the search chain.
     26 #
     27 # We keep explicit options nevertheless, to accommodate canadian
     28 # setups where the libraries are built with an installed cross compiler,
     29 # without -B.  Also note, incidentally, that the detection of duplicate
     30 # paths differs between Windows and Linux hosts as the latter can perform
     31 # inode based checks while the former may only rely on name comparisons.
     32 
     33 LIBGCC2_INCLUDES = -nostdinc -I. \
     34   $(if $(findstring vxworks7, $(target_noncanonical)), \
     35     -I$(VSB_DIR)/h -I$(VSB_DIR)/share/h -I=/system -I=/public, \
     36     -I=/ -I=/wrn/coreip) \
     37   -isystem $(MULTIBUILDTOP)../../gcc/include-fixed$(MULTISUBDIR) \
     38   -isystem $(MULTIBUILDTOP)../../gcc/include
     39 
     40 # Use these also for the vxcrstuff objects (.e.g for version.h), on top of
     41 # the options possibly already set specifically for the target:
     42 CRTSTUFF_T_CFLAGS += $(LIBGCC2_INCLUDES)
     43