Fixed an assortment of C++ and Haiku build errors.

GNUbaserules.mk

@@ -15,6 +15,8 @@ CFLAGS += \
 	-Wno-switch \
 	--std=c99
 
+# TODO consider switching to C++11
+# this will hopelessly disbar Haiku for GCC 2
 CXXFLAGS += \
 	-g \
 	-Wall -Wextra \

common/uipriv.h

@@ -1,4 +1,8 @@
 // 6 april 2015
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdlib.h>
 
 #define uthash_fatal(msg) complain("uthash failed: %s", (msg))
@@ -70,3 +74,7 @@ extern void fallbackScale(uiDrawMatrix *, double, double, double, double);
 extern void fallbackMultiply(uiDrawMatrix *, uiDrawMatrix *);
 extern void fallbackTransformPoint(uiDrawMatrix *, double *, double *);
 extern void fallbackTransformSize(uiDrawMatrix *, double *, double *);
+
+#ifdef __cplusplus
+}
+#endif

haiku/GNUmakeinc.mk

@@ -16,7 +16,7 @@ CXXFLAGS += \
 LDFLAGS += \
 	-fvisibility=hidden \
 	-fPIC \
-	-lbe -lm
+	-lbe
 
 # flags for warning on undefined symbols
 LDFLAGS += \

haiku/alloc.cpp

@@ -3,7 +3,7 @@
 #include <cstdio>
 #include <cstdlib>
 #include "uipriv_haiku.hpp"
-using namepsace std;
+using namespace std;
 
 static set<void *> allocations;
 
@@ -48,23 +48,23 @@ void *uiAlloc(size_t size, const char *type)
 	return DATA(out);
 }
 
-void *uiRealloc(void *p, size_t new, const char *type)
+void *uiRealloc(void *p, size_t xnew, const char *type)
 {
 	void *out;
 	size_t *s;
 
 	if (p == NULL)
-		return uiAlloc(new, type);
+		return uiAlloc(xnew, type);
 	p = BASE(p);
-	out = realloc(p, EXTRA + new);
+	out = realloc(p, EXTRA + xnew);
 	if (out == NULL) {
 		fprintf(stderr, "memory exhausted in uiRealloc()\n");
 		abort();
 	}
 	s = SIZE(out);
-	if (new <= *s)
-		memset(((uint8_t *) DATA(out)) + *s, 0, new - *s);
-	*s = new;
+	if (xnew <= *s)
+		memset(((uint8_t *) DATA(out)) + *s, 0, xnew - *s);
+	*s = xnew;
 	// TODO check this
 	allocations.erase(p);
 	allocations.insert(out);

haiku/uipriv_haiku.hpp

@@ -1,7 +1,9 @@
 // 17 november 2015
 // TODO versioning macros?
+#include <AppKit.h>
 #include <InterfaceKit.h>
-#include "../ui.h"
+//TODO#include "../ui.h"
+#include "ui.hpp"
 #include "../ui_haiku.hpp"
 #include "../common/uipriv.h"