diff -urN Linux-PAM-0.72/modules/pam_limits/Makefile Linux-PAM-0.72.new/modules/pam_limits/Makefile
--- Linux-PAM-0.72/modules/pam_limits/Makefile	Wed Jul  4 20:58:43 2001
+++ Linux-PAM-0.72.new/modules/pam_limits/Makefile	Wed Jul  4 19:31:37 2001
@@ -6,7 +6,7 @@
 # Created by Cristian Gafton <gafton@redhat.com> 1996/09/10
 #
 
-ifeq ($(OS),linux)
+ifneq (,$(findstring $(OS),gnu linux))
 TITLE=pam_limits
 CONFD=$(CONFIGED)/security
 export CONFD
@@ -22,7 +22,10 @@
 LIBOBJD = $(addprefix dynamic/,$(LIBOBJ))
 LIBOBJS = $(addprefix static/,$(LIBOBJ))
 
+ifeq (linux,$(OS))
 LINKLIBS+=-lcap
+CFLAGS+=-DUSE_CAPABILITIES
+endif
 
 dynamic/%.o : %.c
 	$(CC) $(CFLAGS) $(DYNAMIC) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@
diff -urN Linux-PAM-0.72/modules/pam_limits/pam_limits.c Linux-PAM-0.72.new/modules/pam_limits/pam_limits.c
--- Linux-PAM-0.72/modules/pam_limits/pam_limits.c	Wed Jul  4 20:58:48 2001
+++ Linux-PAM-0.72.new/modules/pam_limits/pam_limits.c	Wed Jul  4 19:31:31 2001
@@ -13,12 +13,10 @@
  * See end for Copyright information
  */
 
-#if !(defined(linux))
-#error THIS CODE IS KNOWN TO WORK ONLY ON LINUX !!!
-#endif 
-
+#ifdef USE_CAPABILITIES
 #include <sys/capability.h>
 #include <sys/prctl.h>
+#endif
 
 #include <stdio.h>
 #include <unistd.h>
@@ -62,9 +60,11 @@
 				 specific user or to count all logins */
 static int priority;	    /* the priority to run user process with */
 static char chroot_dir[8092] = "";	/* directory to chroot into */
+#ifdef USE_CAPABILITIES
 static cap_t capabilities;	/* capability handle */
 static int caps_set = 0;	/* capabilities set */
 static int caps_allocated = 0;	/* capabilities allocated */
+#endif
 
 #define LIMIT_LOGIN RLIM_NLIMITS+1
 #define LIMIT_NUMSYSLOGINS RLIM_NLIMITS+2
@@ -261,11 +261,13 @@
     priority = 0;
     login_limit = -2;
     login_limit_def = LIMITS_DEF_NONE;
+#ifdef USE_CAPABILITIES
     if (caps_allocated)
 	cap_free(capabilities);
     capabilities = cap_init();
     caps_allocated = 1;
     caps_set = 0;
+#endif
     return retval;
 }    
 
@@ -401,9 +403,13 @@
 	} else if (limit_item == LIMIT_CHROOT) {
 		strncpy(chroot_dir, value_orig, sizeof(chroot_dir));
 	} else if (limit_item == LIMIT_CAPS) {
+#ifdef USE_CAPABILITIES
 		capabilities = cap_from_text(value_orig);
 		prctl(PR_SET_KEEPCAPS, 1);
 		caps_set = 1;
+#else
+		_pam_log(LOG_WARNING, "capabilities not supported on this system, ignoring them");
+#endif
 	}
     return;    
 }
@@ -533,12 +539,14 @@
 	if (i != 0)
 	    retval = LIMIT_ERR;
     }
+#ifdef USE_CAPABILITIES
     if (!retval && caps_set) {
 	retval = cap_set_proc(capabilities) ? LIMIT_ERR : 0;
 	cap_free(capabilities);
 	caps_set = 0;
 	caps_allocated = 0;
     }
+#endif
     return retval;
 }