https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61920
Bug ID: 61920
Summary: [4.8/4.9/4.10 Regression] libobjc has undefined
symbols on powerp*-linux-gnu
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libobjc
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
this is caused by:
2014-07-24 Ulrich Weigand <ulrich.weig...@de.ibm.com>
* config/rs6000/rs6000-protos.h (rs6000_special_adjust_field_align_p):
Add prototype.
* config/rs6000/rs6000.c (rs6000_special_adjust_field_align_p): New
function. Issue -Wpsabi warning if future GCC releases will use
different field alignment rules for this type.
* config/rs6000/sysv4.h (ADJUST_FIELD_ALIGN): Call it.
* config/rs6000/linux64.h (ADJUST_FIELD_ALIGN): Likewise.
* config/rs6000/freebsd64.h (ADJUST_FIELD_ALIGN): Likewise.
linking libobjc shows:
/«PKGBUILDDIR»/src/libobjc/encoding.c: In function
'objc_layout_structure_next_member':
/«PKGBUILDDIR»/src/libobjc/encoding.c:1163:3: warning: implicit declaration of
function 'rs6000_special_adjust_field_align_p'
[-Wimplicit-function-declaration]
desired_align = ADJUST_FIELD_ALIGN (type, desired_align);
^
and later the packaging tools warn about:
dpkg-shlibdeps: warning: symbol rs6000_special_adjust_field_align_p used by
debian/libobjc4/usr/lib/powerpc-linux-gnu/libobjc.so.4.0.0 found in none of the
libraries
resulting in build failures for any binary linking with -lobjc.
libobjc/encoding.c has a comment saying that it has no business including tm.h,
but up to now it did work.
