File nethack-decl.patch of Package nethack

Index: NetHack-3.6.7/include/system.h
===================================================================
--- NetHack-3.6.7.orig/include/system.h
+++ NetHack-3.6.7/include/system.h
@@ -109,7 +109,9 @@ E void srand48();
 #if !defined(BSD) || defined(ultrix)
 /* real BSD wants all these to return int */
 #ifndef MICRO
+#  ifndef __GLIBC__
 E void FDECL(exit, (int));
+#  endif
 #endif /* MICRO */
 /* compensate for some CSet/2 bogosities */
 #if defined(OS2_CSET2) && defined(OS2_CSET2_VER_2)
@@ -128,7 +130,9 @@ E void FDECL(exit, (int));
 #if defined(__STDC__) || !defined(FLEX_SCANNER)
 #ifndef OS2_CSET2
 #ifndef MONITOR_HEAP
+#    ifndef __GLIBC__
 E void FDECL(free, (genericptr_t));
+#    endif
 #endif
 #endif
 #endif
@@ -362,27 +366,35 @@ E char *FDECL(memset, (char *, int, int)
 E void sleep();
 #endif
 #if defined(ULTRIX) || defined(SYSV)
+# ifndef __GLIBC__
 E unsigned sleep();
+# endif
 #endif
 #if defined(HPUX)
 E unsigned int FDECL(sleep, (unsigned int));
 #endif
 #endif
 #ifdef VMS
+# ifndef __GLIBC__
 E int FDECL(sleep, (unsigned));
+# endif
 #endif
 
+#ifndef __GLIBC__
 E char *FDECL(getenv, (const char *));
 E char *getlogin();
+#endif
 #if defined(HPUX) && !defined(_POSIX_SOURCE)
 E long NDECL(getuid);
 E long NDECL(getgid);
 E long NDECL(getpid);
 #else
 #ifdef POSIX_TYPES
+#  ifndef __GLIBC__
 E pid_t NDECL(getpid);
 E uid_t NDECL(getuid);
 E gid_t NDECL(getgid);
+#  endif
 #ifdef VMS
 E pid_t NDECL(getppid);
 #endif