the Ubuntu gcc (as well as the OpenSuse gcc) sets ---as-needed as the
default, so your configure test fails, making wrong assumptions. So
better build your configure test with -Wl,--no-as-needed.
** Changed in: gcc-defaults (Ubuntu)
Importance: High => Undecided
** Changed in: gcc-defaults (Ubuntu)
Status: Confirmed => Invalid
** Changed in: binutils (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1340250
Title:
"#pragma weak" symbol is 0 even when defined
Status in binutils package in Ubuntu:
Invalid
Status in gcc-defaults package in Ubuntu:
Invalid
Status in libidn package in Ubuntu:
New
Status in libunistring package in Ubuntu:
New
Bug description:
This compiler bug is making the gnulib tests dump core; see:
http://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00039.html
Compile and run the following program t.c with the shell commands "gcc
u.c -lm; ./a.out; echo $?"
#include <math.h>
#pragma weak tgamma
int
main (void)
{
if (!tgamma)
return 2;
if (tgamma (1) == 1)
return 0;
return 1;
}
The program will exit with status 2. It should exit with status 0,
because the math library does have a tgamma function and the function
pointer should be non-null.
I observe this problem with Ubuntu 14.04 x86-64 (GCC Ubuntu
4.8.2-19ubuntu1), but not on Fedora 20 or on RHEL 6.5.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gcc 4:4.8.2-1ubuntu6
ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Jul 10 07:39:11 2014
InstallationDate: Installed on 2012-12-21 (566 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: gcc-defaults
UpgradeStatus: Upgraded to trusty on 2014-04-18 (83 days ago)
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