On Sun, Mar 09, 2003 at 11:35:49PM -0800, Vladimir G. Ivanovic wrote: > gcc -std=c99 -g -Wall -o tst tst.c Odd as it is, -std=c99 causes definition of __STRICT_ANSI__, which is in /usr/include/features.h interpreted as a request to make visible only those parts of the library mandated by ISO C99. If you want to use both -std=c99 and POSIX library features, you should add #define _POSIX_C_SOURCE 200112L before inclusion of any header files. This is required by the POSIX standard. glibc doesn't require this unless you are compiling with __STRICT_ANSI__. The number 200112L indicates currently valid version of POSIX, IEEE Std. 1003.1-2001. Mirek _______________________________________________ Redhat-devel-list mailing list Redhat-devel-list@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/redhat-devel-list