I'm not sure what I'm looking at when I checked config.log. I just did a grep on errors and this is what I came up with:

# grep error config.log
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: File processing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
perror("fopen");
configure:17008: error: structure has no member named `tm_zone'
configure:17077: error: `localtime_r' undeclared (first use in this function)
configure:17077: error: (Each undeclared identifier is reported only once
configure:17077: error: for each function it appears in.)
configure:17102: error: `gmtime_r' undeclared (first use in this function)
configure:17102: error: (Each undeclared identifier is reported only once
configure:17102: error: for each function it appears in.)
configure:17177: error: `strtok_r' undeclared (first use in this function)
configure:17177: error: (Each undeclared identifier is reported only once
configure:17177: error: for each function it appears in.)
configure:17245: error: structure has no member named `tm_gmtoff'
configure:17371: error: `intmax_t' undeclared (first use in this function)
configure:17371: error: (Each undeclared identifier is reported only once
configure:17371: error: for each function it appears in.)
configure:17488: error: `ptrdiff_t' undeclared (first use in this function)
configure:17488: error: (Each undeclared identifier is reported only once
configure:17488: error: for each function it appears in.)
configure:17893: error: structure has no member named `sa_len'
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
configure:18133: checking for gai_strerror
configure:18133: checking for perror
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
configure:18133: checking for strerror
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
ld: fatal: Symbol referencing errors. No output written to conftest
/* Override any gcc2 internal prototype to avoid an error. */
configure:18681: error: too many arguments to function `asctime_r'
configure:18713: error: too many arguments to function `asctime_r'

Please help.