config.mak.in: allow "configure --sysconfdir=/else/where"

diff --git a/git-compat-util.h b/git-compat-util.h
index e2d7e50179cca849f2e2097772439ba5840915ec..79b5122b4f75697413b23b45646813bef8705ba9 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -31,6 +31,9 @@
 #define maximum_signed_value_of_type(a) \
     (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
 
+#define maximum_unsigned_value_of_type(a) \
+    (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a)))
+
 /*
  * Signed integer overflow is undefined in C, so here's a helper macro
  * to detect if the sum of two integers will overflow.
@@ -40,6 +43,9 @@
 #define signed_add_overflows(a, b) \
     ((b) > maximum_signed_value_of_type(a) - (a))
 
+#define unsigned_add_overflows(a, b) \
+    ((b) > maximum_unsigned_value_of_type(a) - (a))
+
 #ifdef __GNUC__
 #define TYPEOF(x) (__typeof__(x))
 #else
@@ -112,6 +118,7 @@
 #endif
 #ifndef __MINGW32__
 #include <sys/wait.h>
+#include <sys/resource.h>
 #include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <termios.h>