https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80720
Bug ID: 80720
Summary: gcc build fails on libiberty conflicting types:
CP_STATIC_IF_GLIBCPP_V3
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: joriswu at gmail dot com
Target Milestone: ---
When building gcc release 7.1.0 according to https://gcc.gnu.org/install, a
type conflict in building libiberty causes an error.
When building without binutils added to the source tree, buid stops at a
missing libiberty.aq
When building binutils libiberty in a separate dir and copying linbiberty.a, an
error about incorrect relacation type shows.
When unpacking binutils 2.28 into the gcc source dir, the type conflict shows :
if [ x"-fpic" != x ]; then \
gcc -c -DHAVE_CONFIG_H -g -I. -I../../gcc-7.1.0/libiberty/../include
-W -Wall -Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic
-D_GNU_SOURCE -fpic ../../gcc-7.1.0/libiberty/cp-demangle.c -o
pic/cp-demangle.o; \
else true; fi
../../gcc-7.1.0/libiberty/cp-demangle.c:4248:1: error: conflicting types for
‘cplus_demangle_print_callback’
cplus_demangle_print_callback (int options,
^
In file included from ../../gcc-7.1.0/libiberty/cp-demangle.c:140:0:
../../gcc-7.1.0/libiberty/../include/demangle.h:715:1: note: previous
declaration of ‘cplus_demangle_print_callback’ was here
cplus_demangle_print_callback (int options,
^
../../gcc-7.1.0/libiberty/cp-demangle.c:4292:1: error: conflicting types for
‘cplus_demangle_print’
cplus_demangle_print (int options, const struct demangle_component *dc,
^
In file included from ../../gcc-7.1.0/libiberty/cp-demangle.c:140:0:
../../gcc-7.1.0/libiberty/../include/demangle.h:695:1: note: previous
declaration of ‘cplus_demangle_print’ was here
cplus_demangle_print (int options,
^
make[3]: *** [cp-demangle.o] Error 1
make[3]: Leaving directory `/home/joris/pkg/gccbld/libiberty'
configured as :
../gcc-7.1.0/configure --prefix=/home/joris --enable-languages=c
--enable-checking=release --disable-nls --disable-multilib
Looking into the conflicting decls the difference is that the source function
has CP_STATIC_IF_GLIBCPP_V3 translating into static whilst demangle.h has it as
extern
