On May 25, 2007, at 12:31 PM, Martin Schröder wrote: > compiling 1.2.3 with gcc -std=c99 gives this warning: > gzio.c: In function 'gz_open': > gzio.c:181: warning: implicit declaration of function 'fdopen' I can't duplicate that problem when I add -std=c99 to the compile options. What were all of the options you used? Mark