http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47390
Summary: Linking with -export-dynamic broken
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: dirtye...@gentoo.org
When building gawk, -export-dynamic is added to LDFLAGS. It seems current
trunk treats options starting with "-e" differently that previous versions.
With 4.6 I get:
x86_64-unknown-linux-gnu-gcc -O2 -march=native -g -pipe -export-dynamic -o
gawk array.o awkgram.o builtin.o dfa.o ext.o field.o floatcomp.o gawkmisc.o
getopt.o getopt1.o io.o main.o msg.o node.o random.o re.o regex.o replace.o
version.o eval.o profile.o -ldl -lm -lm
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.6.0-pre9999/../../../../x86_64-unknown-linux-gnu/bin/ld:
warning: cannot find entry symbol xport-dynamic; defaulting to 00000000004034c0
This leads to a broken gawk:
$ gawk -V
(null): fatal: spec_setup: cp: can't allocate 2109862218 bytes of memory
(Success)
It could be that this is intentional and something like -Wl,-export-dynamic
should be used, but this mail indicates differently:
http://osdir.com/ml/bug-gnu-utils-gnu/2010-10/msg00002.html
If it is intentional, it should be documented in release notes so we have
something to point upstreams at.
$ gcc-4.6.0-pre9999 -v
Using built-in specs.
COLLECT_GCC=gcc-4.6.0-pre9999
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0-pre9999/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.6.0_pre9999/work/gcc-4.6.0-9999/configure
--prefix=/usr --bindir=/usr/x86_64-unknown-linux-gnu/gcc-bin/4.6.0-pre9999
--includedir=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.6.0-pre9999/include
--datadir=/usr/share/gcc-data/x86_64-unknown-linux-gnu/4.6.0-pre9999
--mandir=/usr/share/gcc-data/x86_64-unknown-linux-gnu/4.6.0-pre9999/man
--infodir=/usr/share/gcc-data/x86_64-unknown-linux-gnu/4.6.0-pre9999/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.6.0-pre9999/include/g++-v4
--host=x86_64-unknown-linux-gnu --build=x86_64-unknown-linux-gnu
--disable-altivec --disable-fixed-point --with-ppl --with-cloog
--disable-ppl-version-check --with-cloog-include=/usr/include/cloog-ppl
--enable-lto --disable-nls --with-system-zlib --disable-werror
--enable-secureplt --enable-multilib --disable-libmudflap --disable-libssp
--enable-libgomp --enable-cld
--with-python-dir=/share/gcc-data/x86_64-unknown-linux-gnu/4.6.0-pre9999/python
--enable-checking=release --disable-libgcj --enable-languages=c,c++,go
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/
--with-pkgversion='Gentoo SVN'
Thread model: posix
gcc version 4.6.0-pre9999 20110121 (experimental) rev. 169076 (Gentoo SVN)
$ ld -v
GNU ld (GNU Binutils) 2.21
