Merge branch 'ehofman/mingw'

[flightgear.git] / src / Main / bootstrap.cxx

diff --git a/src/Main/bootstrap.cxx b/src/Main/bootstrap.cxx
index f2018a678660a18de54eaba4b3bdfdab97d017ec..877712d359f920f2ef0dd2c3338796ba6af2cc7e 100644 (file)
--- a/src/Main/bootstrap.cxx
+++ b/src/Main/bootstrap.cxx
@@ -25,41 +25,38 @@
 #  include <config.h>
 #endif
 
-#if defined(__linux__) && defined(__i386__)
+#if defined(HAVE_FEENABLEEXCEPT)
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <fenv.h>
+#elif defined(__linux__) && defined(__i386__)
 #  include <fpu_control.h>
-#  include <signal.h>
-#elif defined(__FreeBSD__)
-#  include <signal.h>
 #endif
 
 #include <errno.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <stdio.h>
 
 #include <simgear/compiler.h>
 #include <simgear/structure/exception.hxx>
 #include <simgear/debug/logstream.hxx>
+#include <simgear/math/SGMath.hxx>
 
-#include STL_IOSTREAM
-SG_USING_STD(cerr);
-SG_USING_STD(endl);
+#include <cstring>
+#include <iostream>
+using std::cerr;
+using std::endl;
 
 #include "main.hxx"
 #include "globals.hxx"
+#include "fg_props.hxx"
+#include "fgviewer.hxx"
 
 
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>
-#  include <float.h>
-#  include <pthread.h>
-#endif
-
 #include "fg_os.hxx"
 
-#ifdef macintosh
-#  include <console.h>         // -dw- for command line dialog
-#endif
-
 char *homedir = ::getenv( "HOME" );
 char *hostname = ::getenv( "HOSTNAME" );
 bool free_hostname = false;
@@ -67,9 +64,28 @@ bool free_hostname = false;
 // foreward declaration.
 void fgExitCleanup();
 
-#if defined(__linux__) && defined(__i386__)
+static bool fpeAbort = false;
+static void handleFPE(int);
+static void initFPE();
+
+#if defined(HAVE_FEENABLEEXCEPT)
+static void
+initFPE ()
+{
+    if (fpeAbort) {
+        int except = fegetexcept();
+        feenableexcept(except | FE_DIVBYZERO | FE_INVALID);
+    } else {
+        signal(SIGFPE, handleFPE);
+    }
+}
 
-static void handleFPE (int);
+static void handleFPE(int)
+{
+    feclearexcept(FE_ALL_EXCEPT);
+    signal(SIGFPE, handleFPE);
+}
+#elif defined(__linux__) && defined(__i386__)
 
 static void
 initFPE ()
@@ -92,25 +108,14 @@ handleFPE (int num)
   initFPE();
   SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
 }
-#endif
-
-#ifdef __APPLE__
-
-typedef struct
+#else
+static void handleFPE(int)
 {
-  int  lo;
-  int  hi;
-} PSN;
-
-extern "C" {
-  short CPSGetCurrentProcess(PSN *psn);
-  short CPSSetProcessName (PSN *psn, char *processname);
-  short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
-  short CPSSetFrontProcess(PSN *psn);
-};
-
-#define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
+}
 
+static void initFPE()
+{
+}
 #endif
 
 #ifdef _MSC_VER
@@ -144,6 +149,16 @@ void flush_fpe(void)
 }
 #endif
 
+static void fg_terminate() {
+    cerr << endl <<
+            "Uncaught Exception: you should see a meaningful error message\n"
+            "here, but your GLUT (or SDL) library was apparently compiled\n"
+            "and/or linked without exception support. Please complain to\n"
+            "its provider!"
+            << endl << endl;
+    abort();
+}
+
 int _bootstrap_OSInit;
 
 // Main entry point; catch any exceptions that have made it this far.
@@ -155,12 +170,21 @@ int main ( int argc, char **argv ) {
 #endif
     _bootstrap_OSInit = 0;
 
-#if defined(__linux__) && defined(__i386__)
-    // Enable floating-point exceptions for Linux/x86
-    initFPE();
-#elif defined(__FreeBSD__)
+#if defined(__FreeBSD__)
     // Ignore floating-point exceptions on FreeBSD
-    signal(SIGFPE, SIG_IGN);
+    signal(SIGFPE, SIG_IGN); 
+#else
+    // Maybe Enable floating-point exceptions on Linux
+    for (int i = 0; i < argc; ++i) {
+        if (!strcmp("--enable-fpe", argv[i])) {
+            fpeAbort = true;
+            break;
+        }
+    }
+    initFPE();
+#endif
+#ifndef _WIN32
+    signal(SIGPIPE, SIG_IGN);
 #endif
 
 #if defined(sgi)
@@ -186,38 +210,37 @@ int main ( int argc, char **argv ) {
 #if defined( HAVE_BC5PLUS )
     _control87(MCW_EM, MCW_EM);  /* defined in float.h */
 #endif
-
-    // Keyboard focus hack
-#if defined(__APPLE__) && !defined(OSX_BUNDLE)
-    {
-      PSN psn;
-
-      fgOSInit (&argc, argv);
-      _bootstrap_OSInit++;
-
-      CPSGetCurrentProcess(&psn);
-      CPSSetProcessName(&psn, "FlightGear");
-      CPSEnableFG(&psn);
-      CPSSetFrontProcess(&psn);
+    bool fgviewer = false;
+    for (int i = 0; i < argc; ++i) {
+        if (!strcmp("--fgviewer", argv[i])) {
+            fgviewer = true;
+            break;
+        }
     }
-#endif
 
     // FIXME: add other, more specific
     // exceptions.
     try {
+        std::set_terminate(fg_terminate);
         atexit(fgExitCleanup);
-        fgMainInit(argc, argv);
+        if (fgviewer)
+            fgviewerMain(argc, argv);
+        else
+            fgMainInit(argc, argv);
     } catch (const sg_throwable &t) {
                             // We must use cerr rather than
                             // logging, since logging may be
                             // disabled.
         cerr << "Fatal error: " << t.getFormattedMessage() << endl;
-        if (!t.getOrigin().empty())
+        if (std::strlen(t.getOrigin()) != 0)
             cerr << " (received from " << t.getOrigin() << ')' << endl;
 
     } catch (const string &s) {
         cerr << "Fatal error: " << s << endl;
 
+    } catch (const char *s) {
+        cerr << "Fatal error: " << s << endl;
+
     } catch (...) {
         cerr << "Unknown exception in the main loop. Aborting..." << endl;
         if (errno)