Build fails with gcc: `iso9660_fs.c: error: only weak aliases are supported in this configuration`

[barracuda156]

Description

Build fails with gcc on some invalid syntax in iso9660 module.

How to Reproduce

Try building.

Output Given

:info:build Making all in iso9660
:info:build make[3]: Entering directory `/opt/local/var/macports/build/libcdio-a6295c0d/work/libcdio-2.3.0/lib/iso9660'
:info:build depbase=`echo iso9660.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
:info:build 	/bin/sh ../../libtool  --tag=CC   --mode=compile /opt/local/bin/gcc-mp-16 -DHAVE_CONFIG_H -I. -I../..  -I../../lib/driver -I../../include -I../../include/ -I/opt/local/include -D_LARGEFILE64_SOURCE  -pipe -Os -arch ppc  -Wall -Wbad-function-cast -Wcast-align -Wchar-subscripts -Wdeclaration-after-statement -Wdisabled-optimization -Wendif-labels -Winline -Wmissing-prototypes -Wnested-externs -Wno-sign-compare -Wpointer-arith -Wshadow -Wstrict-prototypes -Wundef -Wunused -Wwrite-strings -MT iso9660.lo -MD -MP -MF $depbase.Tpo -c -o iso9660.lo iso9660.c &&\
:info:build 	mv -f $depbase.Tpo $depbase.Plo
:info:build depbase=`echo iso9660_fs.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
:info:build 	/bin/sh ../../libtool  --tag=CC   --mode=compile /opt/local/bin/gcc-mp-16 -DHAVE_CONFIG_H -I. -I../..  -I../../lib/driver -I../../include -I../../include/ -I/opt/local/include -D_LARGEFILE64_SOURCE  -pipe -Os -arch ppc  -Wall -Wbad-function-cast -Wcast-align -Wchar-subscripts -Wdeclaration-after-statement -Wdisabled-optimization -Wendif-labels -Winline -Wmissing-prototypes -Wnested-externs -Wno-sign-compare -Wpointer-arith -Wshadow -Wstrict-prototypes -Wundef -Wunused -Wwrite-strings -MT iso9660_fs.lo -MD -MP -MF $depbase.Tpo -c -o iso9660_fs.lo iso9660_fs.c &&\
:info:build 	mv -f $depbase.Tpo $depbase.Plo
:info:build libtool: compile:  /opt/local/bin/gcc-mp-16 -DHAVE_CONFIG_H -I. -I../.. -I../../lib/driver -I../../include -I../../include/ -I/opt/local/include -D_LARGEFILE64_SOURCE -pipe -Os -arch ppc -Wall -Wbad-function-cast -Wcast-align -Wchar-subscripts -Wdeclaration-after-statement -Wdisabled-optimization -Wendif-labels -Winline -Wmissing-prototypes -Wnested-externs -Wno-sign-compare -Wpointer-arith -Wshadow -Wstrict-prototypes -Wundef -Wunused -Wwrite-strings -MT iso9660.lo -MD -MP -MF .deps/iso9660.Tpo -c iso9660.c  -fno-common -DPIC -o .libs/iso9660.o
:info:build libtool: compile:  /opt/local/bin/gcc-mp-16 -DHAVE_CONFIG_H -I. -I../.. -I../../lib/driver -I../../include -I../../include/ -I/opt/local/include -D_LARGEFILE64_SOURCE -pipe -Os -arch ppc -Wall -Wbad-function-cast -Wcast-align -Wchar-subscripts -Wdeclaration-after-statement -Wdisabled-optimization -Wendif-labels -Winline -Wmissing-prototypes -Wnested-externs -Wno-sign-compare -Wpointer-arith -Wshadow -Wstrict-prototypes -Wundef -Wunused -Wwrite-strings -MT iso9660_fs.lo -MD -MP -MF .deps/iso9660_fs.Tpo -c iso9660_fs.c  -fno-common -DPIC -o .libs/iso9660_fs.o
:info:build iso9660_fs.c:1817:1: error: only weak aliases are supported in this configuration
:info:build  1817 | iso9660_find_fs_lsn(CdIo_t *p_cdio, lsn_t i_lsn) __attribute__ ((alias ("iso9660_fs_find_lsn")));
:info:build       | ^~~~~~~~~~~~~~~~~~~
:info:build make[3]: *** [iso9660_fs.lo] Error 1
:info:build make[3]: *** Waiting for unfinished jobs....
:info:build In file included from iso9660.c:32:
:info:build ../../include/cdio/bytesex.h: In function 'iso9660_set_pvd':
:info:build ../../include/cdio/bytesex.h:205:1: warning: inlining failed in call to 'to_733': call is unlikely and code size would grow [-Winline]
:info:build   205 | to_733(uint32_t i)
:info:build       | ^~~~~~
:info:build iso9660.c:654:25: note: called from here
:info:build   654 |   ipd.path_table_size = to_733(path_table_size);
:info:build       |                         ^~~~~~~~~~~~~~~~~~~~~~~
:info:build ../../include/cdio/bytesex.h:205:1: warning: inlining failed in call to 'to_733': call is unlikely and code size would grow [-Winline]
:info:build   205 | to_733(uint32_t i)
:info:build       | ^~~~~~
:info:build iso9660.c:648:27: note: called from here
:info:build   648 |   ipd.volume_space_size = to_733(iso_size);
:info:build       |                           ^~~~~~~~~~~~~~~~
:info:build ../../include/cdio/bytesex.h:205:1: warning: inlining failed in call to 'to_733': call is unlikely and code size would grow [-Winline]
:info:build   205 | to_733(uint32_t i)
:info:build       | ^~~~~~
:info:build iso9660.c:654:25: note: called from here
:info:build   654 |   ipd.path_table_size = to_733(path_table_size);
:info:build       |                         ^~~~~~~~~~~~~~~~~~~~~~~
:info:build ../../include/cdio/bytesex.h: In function 'iso9660_dir_add_entry_su':
:info:build ../../include/cdio/bytesex.h:205:1: warning: inlining failed in call to 'to_733': call is unlikely and code size would grow [-Winline]
:info:build   205 | to_733(uint32_t i)
:info:build       | ^~~~~~
:info:build iso9660.c:779:15: note: called from here
:info:build   779 |   idr->size = to_733(size);
:info:build       |               ^~~~~~~~~~~~
:info:build ../../include/cdio/bytesex.h:205:1: warning: inlining failed in call to 'to_733': call is unlikely and code size would grow [-Winline]
:info:build   205 | to_733(uint32_t i)
:info:build       | ^~~~~~
:info:build iso9660.c:778:17: note: called from here
:info:build   778 |   idr->extent = to_733(extent);
:info:build       |                 ^~~~~~~~~~~~~~
:info:build libtool: compile:  /opt/local/bin/gcc-mp-16 -DHAVE_CONFIG_H -I. -I../.. -I../../lib/driver -I../../include -I../../include/ -I/opt/local/include -D_LARGEFILE64_SOURCE -pipe -Os -arch ppc -Wall -Wbad-function-cast -Wcast-align -Wchar-subscripts -Wdeclaration-after-statement -Wdisabled-optimization -Wendif-labels -Winline -Wmissing-prototypes -Wnested-externs -Wno-sign-compare -Wpointer-arith -Wshadow -Wstrict-prototypes -Wundef -Wunused -Wwrite-strings -MT iso9660.lo -MD -MP -MF .deps/iso9660.Tpo -c iso9660.c -o iso9660.o >/dev/null 2>&1
:info:build make[3]: Leaving directory `/opt/local/var/macports/build/libcdio-a6295c0d/work/libcdio-2.3.0/lib/iso9660'
:info:build make[2]: *** [all-recursive] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/libcdio-a6295c0d/work/libcdio-2.3.0/lib'
:info:build make[1]: *** [all-recursive] Error 1

Expected behavior

Compilation should succeed with every major compiler supporting required lang standards.

Environment

libcdio 2.3.0
MacPorts build env

[rocky]

@barracuda156 Are you up for fixing?