Compile with -no-exceptions on Mac.

qfontdialog_mac.mm needs to handle exceptions thrown by Cocoa,
even if Qt is configured with if -no-exceptions.

This ads a bit of qmake logic for the benefit of a single file,
but I would like to keep -no-exceptions working. The savings
are significant (around 10-15%).

Revby: Richard Moe Gustavsen

2 files changed, 17 insertions, 3 deletions

diff --git a/configure b/configure
index 6dc3898c94..486dc0c2c0 100755
--- a/configure
+++ b/configure
@@ -131,7 +131,7 @@ compilerSupportsFlag()
     cat >conftest.cpp <<EOF
 int main() { return 0; }
 EOF
-    "$TEST_COMPILER" "$@" -o /dev/null conftest.cpp
+    "$TEST_COMPILER" "$@" -o conftest.o conftest.cpp
     ret=$?
     rm -f conftest.cpp conftest.o
     return $ret
diff --git a/src/gui/dialogs/dialogs.pri b/src/gui/dialogs/dialogs.pri
index b9fad41d78..63f64a2d0d 100644
--- a/src/gui/dialogs/dialogs.pri
+++ b/src/gui/dialogs/dialogs.pri
@@ -28,13 +28,27 @@ HEADERS += \
         dialogs/qprintpreviewdialog.h
 
 !embedded:mac {
-    OBJECTIVE_SOURCES += dialogs/qcolordialog_mac.mm \
-                         dialogs/qfiledialog_mac.mm \
+    OBJECTIVE_SOURCES += dialogs/qfiledialog_mac.mm \
                          dialogs/qfontdialog_mac.mm \
                          dialogs/qnspanelproxy_mac.mm \
                          dialogs/qpagesetupdialog_mac.mm \
                          dialogs/qprintdialog_mac.mm
+
+# Compile qcolordialog_mac.mm with exception support, disregarding the -no-exceptions 
+# configure option. (qcolordialog_mac needs to catch exceptions thrown by cocoa)
+    EXCEPTION_SOURCES = dialogs/qcolordialog_mac.mm
+    exceptions_compiler.commands = $$QMAKE_CXX -c
+    exceptions_compiler.commands += $(CXXFLAGS) $(INCPATH) ${QMAKE_FILE_IN} -o ${QMAKE_FILE_OUT}
+    exceptions_compiler.commands += -fexceptions
+    exceptions_compiler.dependency_type = TYPE_C
+    exceptions_compiler.output = ${QMAKE_VAR_OBJECTS_DIR}${QMAKE_FILE_BASE}$${first(QMAKE_EXT_OBJ)}
+    exceptions_compiler.input = EXCEPTION_SOURCES
+    exceptions_compiler.variable_out = OBJECTS
+    exceptions_compiler.name = compiling[exceptopns] ${QMAKE_FILE_IN}
+    silent:exceptions_compiler.commands = @echo compiling[exceptopns] ${QMAKE_FILE_IN} && $$exceptions_compiler.commands
+    QMAKE_EXTRA_COMPILERS += exceptions_compiler
 }
+
 win32 {
     HEADERS += dialogs/qwizard_win_p.h
     SOURCES += dialogs/qdialogsbinarycompat_win.cpp \