More updates. Implement strsignal. Add pwd_grp tests

14 files changed, 451 insertions, 65 deletions

diff --git a/include/string.h b/include/string.h
index 2c334ba71..e276db7ee 100644
--- a/include/string.h
+++ b/include/string.h
@@ -95,6 +95,8 @@ extern size_t strcspn __P ((__const char *__s, __const char *__reject));
    consists entirely of characters in ACCEPT.  */
 extern size_t strspn __P ((__const char *__s, __const char *__accept));
 
+/* Return a string describing the meaning of the signal number in SIG.  */
+extern char *strsignal __P ((int __sig));
 
 /* More BSD compatabilty */
 #define bcmp	memcmp
diff --git a/libc/signal/Makefile b/libc/signal/Makefile
index 4014fd11d..bc81d0b09 100644
--- a/libc/signal/Makefile
+++ b/libc/signal/Makefile
@@ -24,7 +24,7 @@ TOPDIR=../
 include $(TOPDIR)Rules.mak
 LIBC=$(TOPDIR)libc.a
 
-CSRC=raise.c
+CSRC=raise.c sys_siglist.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(COBJS)
 
diff --git a/libc/string/Makefile b/libc/string/Makefile
index 5e6c241cb..0bdb925fd 100644
--- a/libc/string/Makefile
+++ b/libc/string/Makefile
@@ -32,9 +32,9 @@ MOBJ=strlen.o strcat.o strcpy.o strchr.o strcmp.o strncat.o strncpy.o \
 MSRC1=index.c
 MOBJ1=index.o rindex.o
 
-CSRC=strpbrk.c strsep.c strstr.c strtok.c strcspn.c config.c \
-	strspn.c strcasecmp.c strncasecmp.c strerror.c sys_siglist.c \
-	bcopy.c bzero.c bcmp.c 
+CSRC=strpbrk.c strsep.c strstr.c strtok.c strcspn.c config.c strspn.c \
+	strcasecmp.c strncasecmp.c strerror.c bcopy.c bzero.c bcmp.c \
+	strsignal.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(MOBJ) $(MOBJ1) $(COBJS)
 
diff --git a/libc/string/strerror.c b/libc/string/strerror.c
index 6eeac104e..91565965f 100644
--- a/libc/string/strerror.c
+++ b/libc/string/strerror.c
@@ -32,14 +32,14 @@ char *strerror(int err)
 	if (sys_nerr) {
 		if (err < 0 || err >= sys_nerr)
 			goto unknown;
-		return sys_errlist[err];
+		strcpy(retbuf, sys_errlist[err]);
+		return retbuf;
 	}
 
 	if (err <= 0)
 		goto unknown;
 
   unknown:
-	printf("sys_nerr=%d\n", sys_nerr);
 	strcpy(retbuf, "Unknown Error: errno=");
 	strcat(retbuf, (char *) itoa(err));
 	return retbuf;
diff --git a/libc/string/strsignal.c b/libc/string/strsignal.c
new file mode 100644
index 000000000..e1f7ab129
--- /dev/null
+++ b/libc/string/strsignal.c
@@ -0,0 +1,36 @@
+/* vi: set sw=4 ts=4: */
+/* Copyright (C) 2000 Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * This file is part of the uC-Linux and is distributed under the 
+ * GNU Library General Public License.
+ */
+
+#include <string.h>
+#include <malloc.h>
+#include <signal.h>
+
+extern __const char *__const _sys_siglist[_NSIG];
+extern __const char *__const sys_siglist[_NSIG];
+
+/********************** Function strsignal ************************************/
+
+char *strsignal (int sig)
+{
+	static char retbuf[80];
+
+	if (sys_siglist) {
+		if (sig < 0 || sig >= _NSIG)
+			goto unknown;
+		strcpy(retbuf, sys_siglist[sig]);
+		return retbuf;
+	}
+
+	if (sig <= 0)
+		goto unknown;
+
+  unknown:
+	strcpy(retbuf, "Unknown Signal: ");
+	strcat(retbuf, (char *) itoa(sig));
+	return retbuf;
+}
+
+/********************** THE END ********************************************/
diff --git a/test/Makefile b/test/Makefile
index 5c647822b..ebc60523d 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -20,7 +20,7 @@
 # other sundry sources.  Files within this library are copyright by their
 # respective copyright holders.
 
-DIRS = assert ctype silly stdlib string 
+DIRS = assert ctype pwd_grp signal silly stdlib string 
 all: subdirs
 
 tags:
diff --git a/test/pwd_grp/.cvsignore b/test/pwd_grp/.cvsignore
new file mode 100644
index 000000000..b2b052525
--- /dev/null
+++ b/test/pwd_grp/.cvsignore
@@ -0,0 +1,6 @@
+test_grp
+test_grp.o
+test_grp.out
+test_grp_glibc
+test_grp_glibc.o
+test_grp_glibc.out
diff --git a/test/pwd_grp/.indent.pro b/test/pwd_grp/.indent.pro
new file mode 100644
index 000000000..492ecf1c7
--- /dev/null
+++ b/test/pwd_grp/.indent.pro
@@ -0,0 +1,33 @@
+--blank-lines-after-declarations
+--blank-lines-after-procedures
+--break-before-boolean-operator
+--no-blank-lines-after-commas
+--braces-on-if-line
+--braces-on-struct-decl-line
+--comment-indentation25
+--declaration-comment-column25
+--no-comment-delimiters-on-blank-lines
+--cuddle-else
+--continuation-indentation4
+--case-indentation0
+--else-endif-column33
+--space-after-cast
+--line-comments-indentation0
+--declaration-indentation1
+--dont-format-first-column-comments
+--dont-format-comments
+--honour-newlines
+--indent-level4
+/* changed from 0 to 4 */
+--parameter-indentation4
+--line-length78 /* changed from 75 */
+--continue-at-parentheses
+--no-space-after-function-call-names
+--dont-break-procedure-type
+--dont-star-comments
+--leave-optional-blank-lines
+--dont-space-special-semicolon
+--tab-size4
+/* additions by Mark */
+--case-brace-indentation0
+--leave-preprocessor-space
diff --git a/test/pwd_grp/Makefile b/test/pwd_grp/Makefile
new file mode 100644
index 000000000..bfeb0e652
--- /dev/null
+++ b/test/pwd_grp/Makefile
@@ -0,0 +1,87 @@
+TOPDIR=../../
+include $(TOPDIR)Rules.mak
+
+# Check if 'ls -sh' works or not 
+LSFLAGS = $(shell if ls -sh >/dev/null 2>&1; \
+    then echo "-sh"; else echo "-s" ; fi)
+
+XCFLAGS = -Wall -Os -fomit-frame-pointer -fno-builtin -nostdinc \
+	-I$(TOPDIR)include -I/usr/include/linux
+XLDFLAGS = -nostdlib -s -gc-sections
+EXTRA_LIBS=$(TOPDIR)libc.a
+
+YCFLAGS = -Wall -Os -fomit-frame-pointer
+YLDFLAGS = -s --static 
+
+# Allow alternative stripping tools to be used...
+ifndef $(STRIPTOOL)
+	STRIPTOOL = strip
+endif
+STRIP    = $(STRIPTOOL) --remove-section=.note --remove-section=.comment $@
+
+TARGETS=test_pwd test_pwd_glibc
+TARGETS+=test_grp test_grp_glibc
+TARGETS+=test_pwd_diff test_grp_diff
+
+all: $(TARGETS)
+
+test_pwd: test_pwd.c Makefile $(TOPDIR)libc.a
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Compiling vs uCLibc: "
+	-@ echo " "
+	$(CC) $(XCFLAGS) -c $< -o $@.o
+	$(CC) $(XLDFLAGS) $@.o -o $@ $(EXTRA_LIBS)
+	-./$@ 2>&1 >test_pwd.out
+	-@ echo " "
+
+test_pwd_glibc: test_pwd.c Makefile $(TOPDIR)libc.a
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Compiling vs GNU libc: "
+	-@ echo " "
+	$(CC) $(YCFLAGS) -c $< -o $@.o
+	$(CC) $(YLDFLAGS) --static $@.o -o $@
+	-./$@ 2>&1 >test_pwd_glibc.out
+	-@ echo " "
+
+test_grp: test_grp.c Makefile $(TOPDIR)libc.a
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Compiling vs uCLibc: "
+	-@ echo " "
+	$(CC) $(XCFLAGS) -c $< -o $@.o
+	$(CC) $(XLDFLAGS) $@.o -o $@ $(EXTRA_LIBS)
+	-./$@ 2>&1 >test_grp.out
+	-@ echo " "
+
+test_grp_glibc: test_grp.c Makefile $(TOPDIR)libc.a
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Compiling vs GNU libc: "
+	-@ echo " "
+	$(CC) $(YCFLAGS) -c $< -o $@.o
+	$(CC) $(YLDFLAGS) --static $@.o -o $@
+	-./$@ 2>&1 >test_grp_glibc.out
+	-@ echo " "
+
+test_pwd_diff: test_pwd_glibc test_pwd
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Diffing output: "
+	-@ echo " "
+	-diff -u test_pwd_glibc.out test_pwd.out
+	-@ echo " "
+
+test_grp_diff: test_grp_glibc test_grp
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Diffing output: "
+	-@ echo " "
+	-diff -u test_grp_glibc.out test_grp.out
+	-@ echo " "
+
+clean:
+	rm -f *.[oa] *~ core $(TARGETS) *.out
+
+
diff --git a/test/pwd_grp/test_grp.c b/test/pwd_grp/test_grp.c
new file mode 100644
index 000000000..0e9c4a013
--- /dev/null
+++ b/test/pwd_grp/test_grp.c
@@ -0,0 +1,100 @@
+/*
+ * test_grp.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <grp.h>
+
+int main(int argc, char **argv)
+{
+	struct group *group;
+	char **tmp_mem;
+	int test_gid;
+
+	fprintf(stdout, "Beginning test of libc/grp...\n");
+
+	fprintf(stdout, "=> Testing setgrent(), getgrent(), endgrent()...\n");
+	fprintf(stdout, "-> setgrent()...\n");
+	setgrent();
+	fprintf(stdout, "-> getgrent()...\n");
+	printf
+		("********************************************************************************\n");
+	while ((group = getgrent()) != NULL) {
+		printf("gr_name\t\t: %s\n", group->gr_name);
+		printf("gr_passwd\t: %s\n", group->gr_passwd);
+		printf("gr_gid\t\t: %d\n", (int) group->gr_gid);
+		printf("gr_mem\t\t: ");
+		fflush(stdout);
+		tmp_mem = group->gr_mem;
+		while (*tmp_mem != NULL) {
+			printf("%s, ", *tmp_mem);
+			tmp_mem++;
+		}
+		printf
+			("\n********************************************************************************\n");
+	}
+	fprintf(stdout, "-> endgrent()...\n");
+	endgrent();
+	fprintf(stdout,
+			"=> Test of setgrent(), getgrent(), endgrent() complete.\n");
+	fprintf(stdout, "=> Testing getgrid(), getgrnam()...\n");
+	fprintf(stdout, "-> getgrgid()...\n");
+	printf
+		("********************************************************************************\n");
+	for (test_gid = 0; test_gid < 100; test_gid++) {
+		fprintf(stdout, "-> getgrgid(%d)...\n", test_gid);
+		group = getgrgid((gid_t) test_gid);
+		if (group != NULL) {
+			printf("gr_name\t: %s\n", group->gr_name);
+			printf("gr_passwd\t: %s\n", group->gr_passwd);
+			printf("gr_gid\t: %d\n", (int) group->gr_gid);
+			printf("gr_mem\t\t: ");
+			fflush(stdout);
+			tmp_mem = group->gr_mem;
+			while (*tmp_mem != NULL) {
+				printf("%s, ", *tmp_mem);
+				tmp_mem++;
+			}
+		}
+		printf
+			("\n********************************************************************************\n");
+	}
+	fprintf(stdout, "-> getgrnam()...\n");
+	group = getgrnam("root");
+	if (group == NULL) {
+		printf(">NULL<\n");
+	} else {
+		printf("gr_name\t: %s\n", group->gr_name);
+		printf("gr_passwd\t: %s\n", group->gr_passwd);
+		printf("gr_gid\t: %d\n", (int) group->gr_gid);
+		printf("gr_mem\t\t: ");
+		fflush(stdout);
+		tmp_mem = group->gr_mem;
+		while (*tmp_mem != NULL) {
+			printf("%s, ", *tmp_mem);
+			tmp_mem++;
+		}
+		printf("\n");
+	}
+
+
+	return 0;
+}
diff --git a/test/pwd_grp/test_pwd.c b/test/pwd_grp/test_pwd.c
new file mode 100644
index 000000000..9d2186695
--- /dev/null
+++ b/test/pwd_grp/test_pwd.c
@@ -0,0 +1,87 @@
+/*
+ * test_pwd.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <pwd.h>
+
+int main(int argc, char **argv)
+{
+	struct passwd *passwd;
+	int test_uid;
+
+	fprintf(stdout, "Beginning test of libc/pwd...\n");
+
+	fprintf(stdout, "=> Testing setpwent(), getpwent(), endpwent()...\n");
+	fprintf(stdout, "-> setpwent()...\n");
+	setpwent();
+	fprintf(stdout, "-> getpwent()...\n");
+	printf
+		("********************************************************************************\n");
+	while ((passwd = getpwent()) != NULL) {
+		printf("pw_name\t\t: %s\n", passwd->pw_name);
+		printf("pw_passwd\t: %s\n", passwd->pw_passwd);
+		printf("pw_uid\t\t: %d\n", (int) passwd->pw_uid);
+		printf("pw_gid\t\t: %d\n", (int) passwd->pw_gid);
+		printf("pw_gecos\t: %s\n", passwd->pw_gecos);
+		printf("pw_dir\t\t: %s\n", passwd->pw_dir);
+		printf("pw_shell\t: %s\n", passwd->pw_shell);
+		printf
+			("********************************************************************************\n");
+	}
+	fprintf(stdout, "-> endpwent()...\n");
+	endpwent();
+	fprintf(stdout,
+			"=> Test of setpwent(), getpwent(), endpwent() complete.\n");
+	fprintf(stdout, "=> Testing getpwuid(), getpwnam()...\n");
+	fprintf(stdout, "-> getpwuid()...\n");
+	printf
+		("********************************************************************************\n");
+	for (test_uid = 0; test_uid < 1000; test_uid++) {
+		fprintf(stdout, "-> getpwuid(%d)...\n", test_uid);
+		passwd = getpwuid((uid_t) test_uid);
+		if (passwd != NULL) {
+			printf("pw_name\t\t: %s\n", passwd->pw_name);
+			printf("pw_passwd\t: %s\n", passwd->pw_passwd);
+			printf("pw_uid\t\t: %d\n", (int) passwd->pw_uid);
+			printf("pw_gid\t\t: %d\n", (int) passwd->pw_gid);
+			printf("pw_gecos\t: %s\n", passwd->pw_gecos);
+			printf("pw_dir\t\t: %s\n", passwd->pw_dir);
+			printf("pw_shell\t: %s\n", passwd->pw_shell);
+			printf
+				("********************************************************************************\n");
+		}
+	}
+	fprintf(stdout, "-> getpwnam()...\n");
+	passwd = getpwnam("root");
+	if (passwd == NULL) {
+		printf(">NULL<\n");
+	} else {
+		printf("pw_name\t\t: %s\n", passwd->pw_name);
+		printf("pw_passwd\t: %s\n", passwd->pw_passwd);
+		printf("pw_uid\t\t: %d\n", (int) passwd->pw_uid);
+		printf("pw_gid\t\t: %d\n", (int) passwd->pw_gid);
+		printf("pw_gecos\t: %s\n", passwd->pw_gecos);
+		printf("pw_dir\t\t: %s\n", passwd->pw_dir);
+		printf("pw_shell\t: %s\n", passwd->pw_shell);
+	}
+	return 0;
+}
diff --git a/test/signal/.indent.pro b/test/signal/.indent.pro
new file mode 100644
index 000000000..492ecf1c7
--- /dev/null
+++ b/test/signal/.indent.pro
@@ -0,0 +1,33 @@
+--blank-lines-after-declarations
+--blank-lines-after-procedures
+--break-before-boolean-operator
+--no-blank-lines-after-commas
+--braces-on-if-line
+--braces-on-struct-decl-line
+--comment-indentation25
+--declaration-comment-column25
+--no-comment-delimiters-on-blank-lines
+--cuddle-else
+--continuation-indentation4
+--case-indentation0
+--else-endif-column33
+--space-after-cast
+--line-comments-indentation0
+--declaration-indentation1
+--dont-format-first-column-comments
+--dont-format-comments
+--honour-newlines
+--indent-level4
+/* changed from 0 to 4 */
+--parameter-indentation4
+--line-length78 /* changed from 75 */
+--continue-at-parentheses
+--no-space-after-function-call-names
+--dont-break-procedure-type
+--dont-star-comments
+--leave-optional-blank-lines
+--dont-space-special-semicolon
+--tab-size4
+/* additions by Mark */
+--case-brace-indentation0
+--leave-preprocessor-space
diff --git a/test/signal/signal.c b/test/signal/signal.c
index fc411a1b9..9198af5f6 100644
--- a/test/signal/signal.c
+++ b/test/signal/signal.c
@@ -1,21 +1,25 @@
-/* Tester for string functions.
-   Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+/* vi: set sw=4 ts=4: */
+/*
+ * signal testing function for uC-Libc
+ *
+ * Copyright (C) 2000 by Lineo, inc.
+ * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
 
 
 #include <errno.h>
@@ -30,21 +34,20 @@
 /* -------------------------------------------------*/
 /* This stuff is common to all the testing routines */
 /* -------------------------------------------------*/
-const char *it = "<UNSET>";	/* Routine name for message routines. */
+const char *it = "<UNSET>";		/* Routine name for message routines. */
 size_t errors = 0;
 
-void check (int thing, int number)
+void check(int thing, int number)
 {
-  if (!thing)
-    {
-      printf("%s flunked test %d\n", it, number);
-      ++errors;
-    }
+	if (!thing) {
+		printf("%s: flunked test %d\n", it, number);
+		++errors;
+	}
 }
 
-void equal (const char *a, const char *b, int number)
+void equal(const char *a, const char *b, int number)
 {
-  check(a != NULL && b != NULL && (strcmp(a, b)==0), number);
+	check(a != NULL && b != NULL && (strcmp(a, b) == 0), number);
 }
 
 
@@ -56,43 +59,42 @@ int global_int = 0;
 
 void set_global_int_to_one(int signum)
 {
-    printf("entering set_global_int_to_one\n");
-    global_int = 1;
-    return;
+	printf ("Received signal %d (%s).\n", signum, strsignal(signum));
+	global_int = 1;
+	return;
 }
 
-void
-signal_test_1 (void)
+void signal_test_1(void)
 {
-  global_int = 0;
+	global_int = 0;
+
+	it = "global variable set from signal handler";
+	signal(SIGUSR1, set_global_int_to_one);
+	raise(SIGUSR1);
 
-  signal(SIGUSR1, set_global_int_to_one);
-  raise( SIGUSR1);
-  /* This should have first jumped to the signal handler */
-  check ( (global_int == 0), 0);
+	/* This should already have jumped to the signal handler */
+	check((global_int == 1), 1);
 
-  signal(SIGUSR1, SIG_DFL);
-  raise( SIGUSR1);
-  printf("Here I am.\n");
+	global_int = 0;
+	signal(SIGUSR1, SIG_IGN);
+	raise(SIGUSR1);
+	/* This should not go to the signal handler this time since we  */
+	check((global_int == 0), 1);
 }
 
 
-int
-main (void)
+int main(void)
 {
-  int status;
-
-  signal_test_1 ();
-
-  if (errors == 0)
-    {
-      status = EXIT_SUCCESS;
-      printf("No errors.\n");
-    }
-  else
-    {
-      status = EXIT_FAILURE;
-      printf("%d errors.\n", errors);
-    }
-  exit(status);
+	int status;
+
+	signal_test_1();
+
+	if (errors == 0) {
+		status = EXIT_SUCCESS;
+		printf("No errors.\n");
+	} else {
+		status = EXIT_FAILURE;
+		printf("%d errors.\n", errors);
+	}
+	exit(status);
 }
diff --git a/test/stdlib/Makefile b/test/stdlib/Makefile
index d33f3f6ca..0140739d7 100644
--- a/test/stdlib/Makefile
+++ b/test/stdlib/Makefile
@@ -1,5 +1,5 @@
 TOPDIR=../../
-include $(TOPDIR)Rules.make
+include $(TOPDIR)Rules.mak
 
 # Check if 'ls -sh' works or not 
 LSFLAGS = $(shell if ls -sh >/dev/null 2>&1; \