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libstdc++/3070: unresolved fsqrt at link using sqrt and <cmath>
- To: gcc-gnats at gcc dot gnu dot org
- Subject: libstdc++/3070: unresolved fsqrt at link using sqrt and <cmath>
- From: pete at toyon dot com
- Date: 7 Jun 2001 01:14:30 -0000
- Reply-To: pete at toyon dot com
>Number: 3070
>Category: libstdc++
>Synopsis: unresolved fsqrt at link using sqrt and <cmath>
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Jun 06 18:16:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Pete Stieber
>Release: gcc version 3.1 20010605 (experimental)
>Organization:
>Environment:
i686-pc-linux-gnu
Red Hat 7.1
>Description:
Error linking cpp modules that use <cmath> and sqrt.
/tmp/ccg374LU.o: In function `std::sqrt(double)':
/tmp/ccg374LU.o(.gnu.linkonce.t._ZSt4sqrtd+0x2a): undefined reference to `fsqrt'
collect2: ld returned 1 exit status
>How-To-Repeat:
gcc test.cpp
>Fix:
Use <math.h> instead of <cmath>.
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/plain; name="test.cpp"
Content-Disposition: inline; filename="test.cpp"
#include <cmath>
using namespace std;
int main()
{
sqrt(10.0);
return 1;
}