Implement getline() in terms of fgetln() if we have it.

config.h.in

@@ -110,6 +110,9 @@
 /* Define to 1 if your system has the F_CLOSEM fcntl. */
 #undef HAVE_FCNTL_CLOSEM
 
+/* Define to 1 if you have the `fgetln' function. */
+#undef HAVE_FGETLN
+
 /* Define to 1 if you have the `flock' function. */
 #undef HAVE_FLOCK
 

configure

@@ -15828,11 +15828,13 @@ LIBS=$ac_save_LIBS
 
 
 
+
 
 
 for ac_func in dup2 strchr strrchr memchr memcpy memset sysconf tzset getline \
 	       strftime setrlimit initgroups getgroups fstat gettimeofday \
 	       regcomp setlocale getaddrinfo setsid setenv vhangup nanosleep
+	       fgetln
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 { echo "$as_me:$LINENO: checking for $ac_func" >&5

configure.in

@@ -1836,7 +1836,8 @@ dnl
 AC_FUNC_GETGROUPS
 AC_CHECK_FUNCS(dup2 strchr strrchr memchr memcpy memset sysconf tzset getline \
 	       strftime setrlimit initgroups getgroups fstat gettimeofday \
-	       regcomp setlocale getaddrinfo setsid setenv vhangup nanosleep)
+	       regcomp setlocale getaddrinfo setsid setenv vhangup nanosleep
+	       fgetln)
 AC_CHECK_FUNCS(openpty, [AC_CHECK_HEADERS(util.h pty.h, [break])], [
     AC_CHECK_LIB(util, openpty, [
 	AC_CHECK_HEADERS(util.h pty.h, [break])

getline.c

@@ -42,6 +42,31 @@
 
 extern void *erealloc __P((void *, size_t));
 
+#ifdef HAVE_FGETLN
+ssize_t
+getline(bufp, bufsizep, fp)
+    char **bufp;
+    size_t *bufsizep;
+    FILE *fp;
+{
+    char *buf;
+    size_t bufsize;
+    size_t len;
+
+    buf = fgetln(fp, &len);
+    if (buf) {
+	bufsize = *bufp ? *bufsizep : 0;
+	if (bufsize < len + 1) {
+	    bufsize = len + 1;
+	    *bufp = erealloc(*bufp, bufsize);
+	    *bufsizep = bufsize;
+	}
+	memcpy(*bufp, buf, len);
+	(*bufp)[len] = '\0';
+    }
+    return(buf ? len : -1);
+}
+#else
 ssize_t
 getline(bufp, bufsizep, fp)
     char **bufp;
@@ -74,3 +99,4 @@ getline(bufp, bufsizep, fp)
     *bufsizep = bufsize;
     return(len);
 }
+#endif