C compiler cannot create executables

I am trying to compile some application from the command line and I'm getting theses "configure:2744: error" about the C compiler.

Any idea on what can be done?

Here is an extract.

Thanks a lot !

Jef

------

configure:2699: checking for C compiler default output file name
configure:2702: gcc conftest.c >&5
ld: can't locate file for: -lcrt1.o
configure:2705: $? = 1
configure: failed program was:
| /* confdefs.h. */
|
| #define PACKAGE_NAME "curl"
| #define PACKAGE_TARNAME "curl"
| #define PACKAGE_VERSION "-"
| #define PACKAGE_STRING "curl -"
| #define PACKAGE_BUGREPORT "a suitable curl mailing list => http://curl.haxx.se/mail/"
| #define PACKAGE "curl"
| #define VERSION "7.15.1"
| #define OS "powerpc-apple-darwin7.9.0"
| /* end confdefs.h. */
|
| int
| main ()
| {
|
| ;
| return 0;
| }
configure:2744: error: C compiler cannot create executables