From 682c5ae66dccbce8336fd0e0d3dc40f087644ca6 Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@meshlink.io>
Date: Sun, 8 Oct 2017 17:11:19 +0200
Subject: [PATCH] Remove unused/obsolete checks from configure.ac and unused
 functions from dropin.c.

---
 configure.ac | 15 ++-------------
 src/dropin.c | 34 ----------------------------------
 src/dropin.h |  4 ----
 src/have.h   | 11 +++--------
 src/system.h |  6 ------
 5 files changed, 5 insertions(+), 65 deletions(-)

diff --git a/configure.ac b/configure.ac
index d2d7c8c7..f62eff73 100644
--- a/configure.ac
+++ b/configure.ac
@@ -95,20 +95,9 @@ AM_CONDITIONAL(INSTALL_TESTS, test "$install_tests" = true)
 dnl Checks for header files.
 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
 
-AC_HEADER_STDC
-AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h])
-AC_CHECK_HEADERS([time.h],
-  [], [], [#include "src/have.h"]
-)
+AC_CHECK_HEADERS([syslog.h sys/file.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h])
 
 dnl Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_C_VOLATILE
-AC_TYPE_PID_T
-AC_TYPE_SIZE_T
-AC_HEADER_TIME
-AC_STRUCT_TM
-
 MeshLink_ATTRIBUTE(__malloc__)
 MeshLink_ATTRIBUTE(__warn_unused_result__)
 
@@ -122,7 +111,7 @@ AC_CHECK_TYPES([struct sockaddr_storage], ,AC_MSG_ERROR([System must support str
 
 dnl Checks for library functions.
 AC_TYPE_SIGNAL
-AC_CHECK_FUNCS([asprintf fchmod fork get_current_dir_name gettimeofday random select strdup strerror time usleep],
+AC_CHECK_FUNCS([asprintf fchmod fork gettimeofday random select strdup usleep],
   [], [], [#include "src/have.h"]
 )
 
diff --git a/src/dropin.c b/src/dropin.c
index 9fbd6b9e..ff3e8c02 100644
--- a/src/dropin.c
+++ b/src/dropin.c
@@ -21,40 +21,6 @@
 
 #include "xalloc.h"
 
-#ifndef HAVE_GET_CURRENT_DIR_NAME
-/*
-  Replacement for the GNU get_current_dir_name function:
-
-  get_current_dir_name will malloc(3) an array big enough to hold the
-  current directory name.  If the environment variable PWD is set, and
-  its value is correct, then that value will be returned.
-*/
-char *get_current_dir_name(void) {
-	size_t size;
-	char *buf;
-	char *r;
-
-	/* Start with 100 bytes.  If this turns out to be insufficient to
-	   contain the working directory, double the size.  */
-	size = 100;
-	buf = xmalloc(size);
-
-	errno = 0;                                      /* Success */
-	r = getcwd(buf, size);
-
-	/* getcwd returns NULL and sets errno to ERANGE if the bufferspace
-	   is insufficient to contain the entire working directory.  */
-	while(r == NULL && errno == ERANGE) {
-		free(buf);
-		size <<= 1;                             /* double the size */
-		buf = xmalloc(size);
-		r = getcwd(buf, size);
-	}
-
-	return buf;
-}
-#endif
-
 #ifndef HAVE_ASPRINTF
 int asprintf(char **buf, const char *fmt, ...) {
 	int result;
diff --git a/src/dropin.h b/src/dropin.h
index a85f8110..fe2b8589 100644
--- a/src/dropin.h
+++ b/src/dropin.h
@@ -23,10 +23,6 @@
 #include "fake-getaddrinfo.h"
 #include "fake-getnameinfo.h"
 
-#ifndef HAVE_GET_CURRENT_DIR_NAME
-extern char *get_current_dir_name(void);
-#endif
-
 #ifndef HAVE_ASPRINTF
 extern int asprintf(char **, const char *, ...);
 extern int vasprintf(char **, const char *, va_list ap);
diff --git a/src/have.h b/src/have.h
index 7695adc1..536226d5 100644
--- a/src/have.h
+++ b/src/have.h
@@ -32,6 +32,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <inttypes.h>
 #include <string.h>
 #include <ctype.h>
 #include <signal.h>
@@ -47,18 +50,10 @@
 #include <ws2tcpip.h>
 #endif
 
-#ifdef HAVE_STDBOOL_H
-#include <stdbool.h>
-#endif
-
 #ifdef HAVE_TERMIOS_H
 #include <termios.h>
 #endif
 
-#ifdef HAVE_INTTYPES_H
-#include <inttypes.h>
-#endif
-
 /* Include system specific headers */
 
 #ifdef HAVE_SYSLOG_H
diff --git a/src/system.h b/src/system.h
index 2c095515..dc392874 100644
--- a/src/system.h
+++ b/src/system.h
@@ -24,12 +24,6 @@
 
 #include "have.h"
 
-#ifndef HAVE_STDBOOL_H
-typedef int bool;
-#define true 1
-#define false 0
-#endif
-
 #ifndef HAVE_STRSIGNAL
 # define strsignal(p) ""
 #endif
-- 
2.39.5