Lately I upgraded from readline 5.2_p7 to 5.2_p12, and noticed all of a sudden, php was dying with "php: symbol lookup error: /lib/libreadline.so.5: undefined symbol: PC" Upon trying to remerge php , it dies and tells me there is no readline support. Oddly, I downgrade to 5.2_p7 and suddenly php stops dying, and readline support comes back. I extracted the "readline" config test from php's configure script and tested that exclusivley, breaking it down to a minimal set as far as i was able, and th e problem persists: i686-pc-linux-gnu-gcc -o conftest -I/usr/include -march=native -pipe -pthread -O0 -D_REENTRANT -L/lib -L/usr/lib -Wl,-O1 -Wl,-z,combreloc -Wl,--sort-common -Wl,--enable-new-dtags -Wl,--as-needed conftest.c -lncurses -lreadline conftest.c: In function 'main': conftest.c:14: warning: return makes integer from pointer without a cast /lib/libreadline.so: undefined reference to `PC' /lib/libreadline.so: undefined reference to `tgetflag' /lib/libreadline.so: undefined reference to `tgetent' /lib/libreadline.so: undefined reference to `UP' /lib/libreadline.so: undefined reference to `tputs' /lib/libreadline.so: undefined reference to `tgoto' /lib/libreadline.so: undefined reference to `tgetnum' /lib/libreadline.so: undefined reference to `BC' /lib/libreadline.so: undefined reference to `tgetstr' collect2: ld returned 1 exit status The instant i downgrade to 5.2_p7, the compile line happens cleanly, and php suddely stops failing the readline config test Having been familiar with --as-needed ness where its generally just an incorrect order of arguments, i twiddled the args a bit, and found no combination worked, except for of course removing -Wl,--as-needed I tried poking around, recompiled ncurses ( which provides most if not all of the missing symbols concerned ) Reproducible: Always readelf -a /lib/libreadline.so | egrep "(PC|tgetflag|tgetent|UP|tputs|tgoto|tgetnum|[^I]BC|tgetstr)" # _p12 0002dcb8 00000b06 R_386_GLOB_DAT 00000000 PC 0002de28 00002c06 R_386_GLOB_DAT 00000000 UP 0002df40 00004606 R_386_GLOB_DAT 00000000 BC 0002e0b4 00000d07 R_386_JUMP_SLOT 00000000 tgetflag 0002e248 00002407 R_386_JUMP_SLOT 00000000 tgetent 0002e344 00003407 R_386_JUMP_SLOT 00000000 tputs 0002e418 00004207 R_386_JUMP_SLOT 00000000 tgoto 0002e42c 00004507 R_386_JUMP_SLOT 00000000 tgetnum 0002e4d0 00005507 R_386_JUMP_SLOT 00000000 tgetstr 11: 00000000 0 NOTYPE GLOBAL DEFAULT UND PC 13: 00000000 0 NOTYPE GLOBAL DEFAULT UND tgetflag 36: 00000000 0 NOTYPE GLOBAL DEFAULT UND tgetent 44: 00000000 0 NOTYPE GLOBAL DEFAULT UND UP 52: 00000000 0 NOTYPE GLOBAL DEFAULT UND tputs 66: 00000000 0 NOTYPE GLOBAL DEFAULT UND tgoto 69: 00000000 0 NOTYPE GLOBAL DEFAULT UND tgetnum 70: 00000000 0 NOTYPE GLOBAL DEFAULT UND BC 85: 00000000 0 NOTYPE GLOBAL DEFAULT UND tgetstr readelf -a /lib/libreadline.so | egrep "(PC|tgetflag|tgetent|UP|tputs|tgoto|tgetnum|[^I]BC|tgetstr)" # _p7 0002dcc0 00000b06 R_386_GLOB_DAT 00000000 PC 0002de30 00002c06 R_386_GLOB_DAT 00000000 UP 0002df48 00004606 R_386_GLOB_DAT 00000000 BC 0002e0b4 00000d07 R_386_JUMP_SLOT 00000000 tgetflag 0002e248 00002407 R_386_JUMP_SLOT 00000000 tgetent 0002e344 00003407 R_386_JUMP_SLOT 00000000 tputs 0002e418 00004207 R_386_JUMP_SLOT 00000000 tgoto 0002e42c 00004507 R_386_JUMP_SLOT 00000000 tgetnum 0002e4d0 00005507 R_386_JUMP_SLOT 00000000 tgetstr 11: 00000000 1 OBJECT GLOBAL DEFAULT UND PC 13: 00000000 150 FUNC GLOBAL DEFAULT UND tgetflag 36: 00000000 1412 FUNC GLOBAL DEFAULT UND tgetent 44: 00000000 4 OBJECT GLOBAL DEFAULT UND UP 52: 00000000 643 FUNC GLOBAL DEFAULT UND tputs 66: 00000000 49 FUNC GLOBAL DEFAULT UND tgoto 69: 00000000 172 FUNC GLOBAL DEFAULT UND tgetnum 70: 00000000 4 OBJECT GLOBAL DEFAULT UND BC 85: 00000000 272 FUNC GLOBAL DEFAULT UND tgetstr I would imagine that the .dynsym table lacking "size" fields and the "Type" fields all being NOTYPE is possibly part of the problem. Will paste emerge --info as attachment as I've probably already hit my character limit. Summary: Portage 2.1.4_rc14 (default-linux/x86/2007.0, gcc-4.2.2, glibc-2.7-r1, 2.6.23-gentoo-r3kz i686) sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.24
Created attachment 139946 [details] emerge --info emerge --info data
This version doesn't exist any more; linking fixed in -r1. *readline-5.2_p12-r1 (02 Jan 2008) 02 Jan 2008; Mike Frysinger <vapier@gentoo.org> +readline-5.2_p12-r1.ebuild: Make sure we continue to always link against ncurses as reported by welp.
(In reply to comment #2) > This version doesn't exist any more; linking fixed in -r1. > > *readline-5.2_p12-r1 (02 Jan 2008) > > 02 Jan 2008; Mike Frysinger <vapier@gentoo.org> > +readline-5.2_p12-r1.ebuild: > Make sure we continue to always link against ncurses as reported by welp. > Cheers, I need to sync more often :)
