Red Hat Bugzilla – Bug 606830
ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality can not be used when making an executable; recompile with -fPIE and relink with -pie
Last modified: 2011-06-27 14:44:40 EDT
Description of problem:
static linkage doesn't work with binutils 2.6.20
Version-Release number of selected component (if applicable):
Create a sample file and try to compile it with -static and -Wl,--export-dynamic flags.
Steps to Reproduce:
1. Create a file with the following contents:
int main(int argc, char **argv)
2. Run the following command:
gcc -static -Wl,--export-dynamic test.c
/usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/gcc/x86_64-redhat-linux/4.4.4/../../../../lib64/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie
collect2: ld returned 1 exit status
File compiles and links normally.
Reproduced both with Fedora 13 x86 and Fedora 13 x86_64. Reproduced when using gcc and gcc34 compilers.
Here is the similar problem for Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=584607
Same scenario works fine on Debian lenny x86:
$ gcc --version
gcc (Debian 4.3.2-1.1) 4.3.2
GNU C Library stable release version 2.7, by Roland McGrath et al.
$ dpkg-query -W binutils
Works fine on Arch Linux x86_64 with the following:
$ pacman -Q gcc glibc binutils
--export-dynamic doesn't make sense in a static link.
FIY, the reason why strcmp is dynamic is described in http://udrepper.livejournal.com/20948.html section "Automatic use of optimized function".
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