Nick Clifton wrote:
I am going to check in the attached patch which imports a fix from
the mainline dejagnu sources. This fix is to use the -isystem
switch to include system header files rather than -I. This fixes
several unexpected failures in the GCC and G++ testsuites where the
newlib system header file <limits.h> is included in strict ANSI
mode, and the compiler barfs on the #include_next directive.
Unfortunately this patch causes regressions on the gcc builtins tests.
These tests rely on detecting newlib by looking for the definition of
_NEWLIB_VERSION being added by including limits.h; but the change in the
search order means that we now pick up a dummy version of newlib.h from
the gcc include directory.
With your patch the search path has now become
/work/rearnsha/gnu/egcs/gcc/include
/work/rearnsha/gnu/egcs/arm-elf/./newlib/targ-include
/home/rearnsha/gnusrc/egcs-cross/newlib/libc/include
Whereas previously the gcc/include directory came later in the search.