[Bug bootstrap/28515] CFLAGS not propagated, resulting in object mismatch

["skunk at iskunk dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #6 from skunk at iskunk dot org  2006-08-02 16:30 -------
Interestingly enough, the test-cc script teased out an apparent bug in
config/depstand.m4 (routines to check the compiler's mode of dependency
generation). When the compiler is invoked, at the $SHELL line in the below
excerpt...

----(begin config/depstand.m4 excerpt)----
    depcmd="depmode=$depmode \
       source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
       $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c"
    echo "| $depcmd" | sed -e 's/  */ /g' >&AS_MESSAGE_LOG_FD
    if env $depcmd > conftest.err 2>&1 &&
----(end config/depstand.m4 excerpt)----

...no compiler flags are passed to it.

You'll have to work around this in order to make use of the wrapper script, but
would this be worth a new bug report? You could imagine a case where the
compiler does something stupid here (strict K&R mode?) if it doesn't get a
certain flag.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28515