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Re: Symbols _fe_dfl_env and _fe_nomask_env not exported on x86_64




On 2018-07-20 01:00, Houder wrote:
L.S.,

This STC fails to compile on Cygwin for x86_64:

// gcc -Wall -o stc-fenv stc-fenv.c
// Linux: gcc -Wall -o stc-fenv stc-fenv.c -lm
#define _GNU_SOURCE
#include <fenv.h>

int main()
{
    fesetenv(FE_DFL_ENV);
    fesetenv(FE_NOMASK_ENV);
}

64-@@ gcc -Wall -o stc-fenv stc-fenv.c
/tmp/cchxZMgV.o:stc-fenv.c:(.rdata$.refptr._fe_nomask_env[.refptr._fe_nomask_env]+0x0):
undefined reference to `_fe_nomask_env'
/tmp/cchxZMgV.o:stc-fenv.c:(.rdata$.refptr._fe_dfl_env[.refptr._fe_dfl_env]+0x0):
undefined reference to `_fe_dfl_env'
collect2: error: ld returned 1 exit status

However the STC does compile on x86.

Where has the machinery gone wrong?

File winsup/CVSChangeLogs.old/cygwin/ChangeLog.64 bit contains: (line 761 ff)

2013-02-08  Corinna Vinschen  <corinna@xxxxxxxxxxx>

        * cygwin64.din (BASE): Set to 0x180040000.
        (_fe_dfl_env): Remove useless symbol.
        (_fe_nomask_env): Remove useless symbol.

File cygwin64.din does not exist anymore (as far as I can tell).

Has it been renamed x68_64.din?

Regards,

Henri

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