[ruby-core:42742] [ruby-trunk - Bug #5676] miniruby linking error: undefined reference to ___stack_chk_guard

Issue #5676 has been updated by Jon Forums.


Thanks for checking. Trunk builds fine using the old default gcc 4.2.1 and configure adds `-fstack-protector` to Makefile.

I think you're right on runtime library mismatch, but shouldn't it fail when miniruby is used later in the build process, not at miniruby link time?  The following sequence definitely looks like a library mismatch...

ldconfig -rv | grep gcc
	search directories: /lib:/usr/lib:/usr/lib/compat:/usr/local/lib:/usr/local/lib/compat/pkg:/usr/local/lib/gcc46:/usr/local/lib/nss:/usr/local/lib/pth:/usr/local/lib/qt4:/usr/local/lib/zsh
	33:-lgcc_s.1 => /lib/libgcc_s.so.1
	...
	475:-lssp.0 => /usr/local/lib/gcc46/libssp.so.0

ldconfig -rv | grep ssp
	35:-lssp.0 => /lib/libssp.so.0
	475:-lssp.0 => /usr/local/lib/gcc46/libssp.so.0

diff -q /lib/libssp.so.0 /usr/local/lib/gcc46/libssp.so.0
Files /lib/libssp.so.0 and /usr/local/lib/gcc46/libssp.so.0 differ

stat -f '%z' /lib/libssp.so.0 /usr/local/lib/gcc46/libssp.so.0 
6828
26880

objdump -tT /usr/local/lib/gcc46/libssp.so.0 | grep __stack_chk_fail
00000ba0 l     F .text	00000019              __stack_chk_fail_local
00000b40 g     F .text	00000028              __stack_chk_fail
00000b40 g    DF .text	00000028  LIBSSP_1.0  __stack_chk_fail

objdump -tT /lib/libssp.so.0 | grep __stack_chk_fail
00000fc0 g    DF .text	00000027  LIBSSP_1.0  __stack_chk_fail


But shouldn't gcc46's default search dirs save the link like it appears to be happening when configure (using `--with-gcc=gcc46`) executes `RUBY_TRY_CFLAGS(-fstack-protector, ...)`?

gcc46 -print-search-dirs 
install: /usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/
programs: =/usr/local/libexec/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/:/usr/local/libexec/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/:/usr/local/libexec/gcc46/gcc/i386-portbld-freebsd9.0/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/../../../../../i386-portbld-freebsd9.0/bin/i386-portbld-freebsd9.0/4.6.2/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/../../../../../i386-portbld-freebsd9.0/bin/
libraries: =/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/../../../../../i386-portbld-freebsd9.0/lib/i386-portbld-freebsd9.0/4.6.2/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/../../../../../i386-portbld-freebsd9.0/lib/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/../../../i386-portbld-freebsd9.0/4.6.2/:/usr/local/lib/gcc46/gcc/i386-portbld-freebsd9.0/4.6.2/../../../:/lib/i386-portbld-freebsd9.0/4.6.2/:/lib/:/usr/lib/i386-portbld-freebsd9.0/4.6.2/:/usr/lib/

I've overlooked something important or a FreeBSD post-install step after running `sudo pkg_add -r gcc-4.6.2`. Back to the RTFM-a-thon unless you guys spot my mistake.
----------------------------------------
Bug #5676: miniruby linking error: undefined reference to ___stack_chk_guard
https://bugs.ruby-lang.org/issues/5676

Author: Martin D端rst
Status: Feedback
Priority: Normal
Assignee: Motohiro KOSAKI
Category: build
Target version: 2.0.0
ruby -v: ruby 2.0.0dev (2011-11-27 trunk 33861) [i386-cygwin]


I get what I think is a linking error when linking miniruby.
Below is a (shortened) copy of the output I get. This is on
a clean checkout of trunk (using Ruby 1.8.7 as baseruby).

duerst@jougashima /cygdrive/c/Data/ruby-public
$ make
        CC = gcc
        LD = ld
        LDSHARED = gcc -shared -s
        CFLAGS = -O3 -g -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Werror=pointer-arith -Werror=write-strings -Werror=declaration-after-statement -Werror=implicit-function-declaration
        XCFLAGS = -include ruby/config.h -include ruby/missing.h -D_FORTIFY_SOURCE=2 -fstack-protector -DRUBY_EXPORT
        CPPFLAGS =   -I. -I.ext/include/i386-cygwin -I./include -I.
        DLDFLAGS = -Wl,--enable-auto-image-base,--enable-auto-import -Wl,--out-implib=libruby191.dll.a cygruby191.def -Xlinker --no-undefined
        SOLIBS = cygruby191.res.o -lpthread -lrt -ldl -lcrypt
linking miniruby.exe
dmyencoding.o: In function `set_encoding_const':
/cygdrive/c/Data/ruby-public/encoding.c:1473: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/encoding.c:1520: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/encoding.c:1520: undefined reference to `___stack_chk_fail'
bignum.o: In function `rb_str_to_inum':
/cygdrive/c/Data/ruby-public/bignum.c:763: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/bignum.c:790: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/bignum.c:790: undefined reference to `___stack_chk_fail'
dir.o: In function `dir_read':
/cygdrive/c/Data/ruby-public/dir.c:569: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/dir.c:586: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/dir.c:586: undefined reference to `___stack_chk_fail'

[... many more like these ...]

vm_dump.o: In function `control_frame_dump':
/cygdrive/c/Data/ruby-public/vm_dump.c:27: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/vm_dump.c:148: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/vm_dump.c:148: undefined reference to `___stack_chk_fail'
cont.o: In function `cont_restore_0':
/cygdrive/c/Data/ruby-public/cont.c:733: undefined reference to `___stack_chk_guard'
unicode.o: In function `onigenc_unicode_property_name_to_ctype':
/cygdrive/c/Data/ruby-public/./enc/unicode.c:2087: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/./enc/unicode.c:2114: undefined reference to `___stack_chk_guard'
/cygdrive/c/Data/ruby-public/./enc/unicode.c:2114: undefined reference to `___stack_chk_fail'
collect2: ld returned 1 exit status
make: *** [miniruby.exe] Error 1

duerst@jougashima /cygdrive/c/Data/ruby-public
$



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