Weaklink most toolbox modules, improving backward compatibility. Modules will no longer fail to load if a single routine is missing on the curent OS version, in stead calling the missing routine will raise an exception.

Should finally fix 531398. 2.2.1 candidate.

Also blacklisted some constants with definitions that were not Python-compatible.

1 files changed, 183 insertions, 0 deletions

diff --git a/Mac/Modules/icn/_Icnmodule.c b/Mac/Modules/icn/_Icnmodule.c
index bc27732..19930df 100644
--- a/Mac/Modules/icn/_Icnmodule.c
+++ b/Mac/Modules/icn/_Icnmodule.c
@@ -34,6 +34,9 @@ static PyObject *Icn_GetCIcon(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	CIconHandle _rv;
 	SInt16 iconID;
+#ifndef GetCIcon
+	PyMac_PRECHECK(GetCIcon);
+#endif
 	if (!PyArg_ParseTuple(_args, "h",
 	                      &iconID))
 		return NULL;
@@ -48,6 +51,9 @@ static PyObject *Icn_PlotCIcon(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	Rect theRect;
 	CIconHandle theIcon;
+#ifndef PlotCIcon
+	PyMac_PRECHECK(PlotCIcon);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      PyMac_GetRect, &theRect,
 	                      ResObj_Convert, &theIcon))
@@ -63,6 +69,9 @@ static PyObject *Icn_DisposeCIcon(PyObject *_self, PyObject *_args)
 {
 	PyObject *_res = NULL;
 	CIconHandle theIcon;
+#ifndef DisposeCIcon
+	PyMac_PRECHECK(DisposeCIcon);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIcon))
 		return NULL;
@@ -77,6 +86,9 @@ static PyObject *Icn_GetIcon(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	Handle _rv;
 	SInt16 iconID;
+#ifndef GetIcon
+	PyMac_PRECHECK(GetIcon);
+#endif
 	if (!PyArg_ParseTuple(_args, "h",
 	                      &iconID))
 		return NULL;
@@ -91,6 +103,9 @@ static PyObject *Icn_PlotIcon(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	Rect theRect;
 	Handle theIcon;
+#ifndef PlotIcon
+	PyMac_PRECHECK(PlotIcon);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      PyMac_GetRect, &theRect,
 	                      ResObj_Convert, &theIcon))
@@ -110,6 +125,9 @@ static PyObject *Icn_PlotIconID(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconTransformType transform;
 	SInt16 theResID;
+#ifndef PlotIconID
+	PyMac_PRECHECK(PlotIconID);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhh",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -131,6 +149,9 @@ static PyObject *Icn_NewIconSuite(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	OSErr _err;
 	IconSuiteRef theIconSuite;
+#ifndef NewIconSuite
+	PyMac_PRECHECK(NewIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, ""))
 		return NULL;
 	_err = NewIconSuite(&theIconSuite);
@@ -147,6 +168,9 @@ static PyObject *Icn_AddIconToSuite(PyObject *_self, PyObject *_args)
 	Handle theIconData;
 	IconSuiteRef theSuite;
 	ResType theType;
+#ifndef AddIconToSuite
+	PyMac_PRECHECK(AddIconToSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&O&",
 	                      ResObj_Convert, &theIconData,
 	                      ResObj_Convert, &theSuite,
@@ -168,6 +192,9 @@ static PyObject *Icn_GetIconFromSuite(PyObject *_self, PyObject *_args)
 	Handle theIconData;
 	IconSuiteRef theSuite;
 	ResType theType;
+#ifndef GetIconFromSuite
+	PyMac_PRECHECK(GetIconFromSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      ResObj_Convert, &theSuite,
 	                      PyMac_GetOSType, &theType))
@@ -188,6 +215,9 @@ static PyObject *Icn_GetIconSuite(PyObject *_self, PyObject *_args)
 	IconSuiteRef theIconSuite;
 	SInt16 theResID;
 	IconSelectorValue selector;
+#ifndef GetIconSuite
+	PyMac_PRECHECK(GetIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "hl",
 	                      &theResID,
 	                      &selector))
@@ -207,6 +237,9 @@ static PyObject *Icn_DisposeIconSuite(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	IconSuiteRef theIconSuite;
 	Boolean disposeData;
+#ifndef DisposeIconSuite
+	PyMac_PRECHECK(DisposeIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&b",
 	                      ResObj_Convert, &theIconSuite,
 	                      &disposeData))
@@ -227,6 +260,9 @@ static PyObject *Icn_PlotIconSuite(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconTransformType transform;
 	IconSuiteRef theIconSuite;
+#ifndef PlotIconSuite
+	PyMac_PRECHECK(PlotIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhO&",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -251,6 +287,9 @@ static PyObject *Icn_LoadIconCache(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconTransformType transform;
 	IconCacheRef theIconCache;
+#ifndef LoadIconCache
+	PyMac_PRECHECK(LoadIconCache);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhO&",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -274,6 +313,9 @@ static PyObject *Icn_GetLabel(PyObject *_self, PyObject *_args)
 	SInt16 labelNumber;
 	RGBColor labelColor;
 	Str255 labelString;
+#ifndef GetLabel
+	PyMac_PRECHECK(GetLabel);
+#endif
 	if (!PyArg_ParseTuple(_args, "hO&",
 	                      &labelNumber,
 	                      PyMac_GetStr255, labelString))
@@ -295,6 +337,9 @@ static PyObject *Icn_PtInIconID(PyObject *_self, PyObject *_args)
 	Rect iconRect;
 	IconAlignmentType align;
 	SInt16 iconID;
+#ifndef PtInIconID
+	PyMac_PRECHECK(PtInIconID);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hh",
 	                      PyMac_GetPoint, &testPt,
 	                      PyMac_GetRect, &iconRect,
@@ -318,6 +363,9 @@ static PyObject *Icn_PtInIconSuite(PyObject *_self, PyObject *_args)
 	Rect iconRect;
 	IconAlignmentType align;
 	IconSuiteRef theIconSuite;
+#ifndef PtInIconSuite
+	PyMac_PRECHECK(PtInIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hO&",
 	                      PyMac_GetPoint, &testPt,
 	                      PyMac_GetRect, &iconRect,
@@ -341,6 +389,9 @@ static PyObject *Icn_RectInIconID(PyObject *_self, PyObject *_args)
 	Rect iconRect;
 	IconAlignmentType align;
 	SInt16 iconID;
+#ifndef RectInIconID
+	PyMac_PRECHECK(RectInIconID);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hh",
 	                      PyMac_GetRect, &testRect,
 	                      PyMac_GetRect, &iconRect,
@@ -364,6 +415,9 @@ static PyObject *Icn_RectInIconSuite(PyObject *_self, PyObject *_args)
 	Rect iconRect;
 	IconAlignmentType align;
 	IconSuiteRef theIconSuite;
+#ifndef RectInIconSuite
+	PyMac_PRECHECK(RectInIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hO&",
 	                      PyMac_GetRect, &testRect,
 	                      PyMac_GetRect, &iconRect,
@@ -387,6 +441,9 @@ static PyObject *Icn_IconIDToRgn(PyObject *_self, PyObject *_args)
 	Rect iconRect;
 	IconAlignmentType align;
 	SInt16 iconID;
+#ifndef IconIDToRgn
+	PyMac_PRECHECK(IconIDToRgn);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hh",
 	                      ResObj_Convert, &theRgn,
 	                      PyMac_GetRect, &iconRect,
@@ -411,6 +468,9 @@ static PyObject *Icn_IconSuiteToRgn(PyObject *_self, PyObject *_args)
 	Rect iconRect;
 	IconAlignmentType align;
 	IconSuiteRef theIconSuite;
+#ifndef IconSuiteToRgn
+	PyMac_PRECHECK(IconSuiteToRgn);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hO&",
 	                      ResObj_Convert, &theRgn,
 	                      PyMac_GetRect, &iconRect,
@@ -433,6 +493,9 @@ static PyObject *Icn_SetSuiteLabel(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	IconSuiteRef theSuite;
 	SInt16 theLabel;
+#ifndef SetSuiteLabel
+	PyMac_PRECHECK(SetSuiteLabel);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&h",
 	                      ResObj_Convert, &theSuite,
 	                      &theLabel))
@@ -450,6 +513,9 @@ static PyObject *Icn_GetSuiteLabel(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	SInt16 _rv;
 	IconSuiteRef theSuite;
+#ifndef GetSuiteLabel
+	PyMac_PRECHECK(GetSuiteLabel);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theSuite))
 		return NULL;
@@ -467,6 +533,9 @@ static PyObject *Icn_PlotIconHandle(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconTransformType transform;
 	Handle theIcon;
+#ifndef PlotIconHandle
+	PyMac_PRECHECK(PlotIconHandle);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhO&",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -491,6 +560,9 @@ static PyObject *Icn_PlotSICNHandle(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconTransformType transform;
 	Handle theSICN;
+#ifndef PlotSICNHandle
+	PyMac_PRECHECK(PlotSICNHandle);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhO&",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -515,6 +587,9 @@ static PyObject *Icn_PlotCIconHandle(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconTransformType transform;
 	CIconHandle theCIcon;
+#ifndef PlotCIconHandle
+	PyMac_PRECHECK(PlotCIconHandle);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhO&",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -536,6 +611,9 @@ static PyObject *Icn_PlotCIconHandle(PyObject *_self, PyObject *_args)
 static PyObject *Icn_IconServicesTerminate(PyObject *_self, PyObject *_args)
 {
 	PyObject *_res = NULL;
+#ifndef IconServicesTerminate
+	PyMac_PRECHECK(IconServicesTerminate);
+#endif
 	if (!PyArg_ParseTuple(_args, ""))
 		return NULL;
 	IconServicesTerminate();
@@ -552,6 +630,9 @@ static PyObject *Icn_IconRefToIconFamily(PyObject *_self, PyObject *_args)
 	IconRef theIconRef;
 	IconSelectorValue whichIcons;
 	IconFamilyHandle iconFamily;
+#ifndef IconRefToIconFamily
+	PyMac_PRECHECK(IconRefToIconFamily);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&l",
 	                      ResObj_Convert, &theIconRef,
 	                      &whichIcons))
@@ -572,6 +653,9 @@ static PyObject *Icn_IconFamilyToIconSuite(PyObject *_self, PyObject *_args)
 	IconFamilyHandle iconFamily;
 	IconSelectorValue whichIcons;
 	IconSuiteRef iconSuite;
+#ifndef IconFamilyToIconSuite
+	PyMac_PRECHECK(IconFamilyToIconSuite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&l",
 	                      ResObj_Convert, &iconFamily,
 	                      &whichIcons))
@@ -592,6 +676,9 @@ static PyObject *Icn_IconSuiteToIconFamily(PyObject *_self, PyObject *_args)
 	IconSuiteRef iconSuite;
 	IconSelectorValue whichIcons;
 	IconFamilyHandle iconFamily;
+#ifndef IconSuiteToIconFamily
+	PyMac_PRECHECK(IconSuiteToIconFamily);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&l",
 	                      ResObj_Convert, &iconSuite,
 	                      &whichIcons))
@@ -612,6 +699,9 @@ static PyObject *Icn_SetIconFamilyData(PyObject *_self, PyObject *_args)
 	IconFamilyHandle iconFamily;
 	OSType iconType;
 	Handle h;
+#ifndef SetIconFamilyData
+	PyMac_PRECHECK(SetIconFamilyData);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&O&",
 	                      ResObj_Convert, &iconFamily,
 	                      PyMac_GetOSType, &iconType,
@@ -633,6 +723,9 @@ static PyObject *Icn_GetIconFamilyData(PyObject *_self, PyObject *_args)
 	IconFamilyHandle iconFamily;
 	OSType iconType;
 	Handle h;
+#ifndef GetIconFamilyData
+	PyMac_PRECHECK(GetIconFamilyData);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&O&",
 	                      ResObj_Convert, &iconFamily,
 	                      PyMac_GetOSType, &iconType,
@@ -653,6 +746,9 @@ static PyObject *Icn_GetIconRefOwners(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	IconRef theIconRef;
 	UInt16 owners;
+#ifndef GetIconRefOwners
+	PyMac_PRECHECK(GetIconRefOwners);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIconRef))
 		return NULL;
@@ -669,6 +765,9 @@ static PyObject *Icn_AcquireIconRef(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	OSErr _err;
 	IconRef theIconRef;
+#ifndef AcquireIconRef
+	PyMac_PRECHECK(AcquireIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIconRef))
 		return NULL;
@@ -684,6 +783,9 @@ static PyObject *Icn_ReleaseIconRef(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	OSErr _err;
 	IconRef theIconRef;
+#ifndef ReleaseIconRef
+	PyMac_PRECHECK(ReleaseIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIconRef))
 		return NULL;
@@ -701,6 +803,9 @@ static PyObject *Icn_GetIconRefFromFile(PyObject *_self, PyObject *_args)
 	FSSpec theFile;
 	IconRef theIconRef;
 	SInt16 theLabel;
+#ifndef GetIconRefFromFile
+	PyMac_PRECHECK(GetIconRefFromFile);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      PyMac_GetFSSpec, &theFile))
 		return NULL;
@@ -722,6 +827,9 @@ static PyObject *Icn_GetIconRef(PyObject *_self, PyObject *_args)
 	OSType creator;
 	OSType iconType;
 	IconRef theIconRef;
+#ifndef GetIconRef
+	PyMac_PRECHECK(GetIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "hO&O&",
 	                      &vRefNum,
 	                      PyMac_GetOSType, &creator,
@@ -747,6 +855,9 @@ static PyObject *Icn_GetIconRefFromFolder(PyObject *_self, PyObject *_args)
 	SInt8 attributes;
 	SInt8 accessPrivileges;
 	IconRef theIconRef;
+#ifndef GetIconRefFromFolder
+	PyMac_PRECHECK(GetIconRefFromFolder);
+#endif
 	if (!PyArg_ParseTuple(_args, "hllbb",
 	                      &vRefNum,
 	                      &parentFolderID,
@@ -774,6 +885,9 @@ static PyObject *Icn_RegisterIconRefFromIconFamily(PyObject *_self, PyObject *_a
 	OSType iconType;
 	IconFamilyHandle iconFamily;
 	IconRef theIconRef;
+#ifndef RegisterIconRefFromIconFamily
+	PyMac_PRECHECK(RegisterIconRefFromIconFamily);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&O&",
 	                      PyMac_GetOSType, &creator,
 	                      PyMac_GetOSType, &iconType,
@@ -798,6 +912,9 @@ static PyObject *Icn_RegisterIconRefFromResource(PyObject *_self, PyObject *_arg
 	FSSpec resourceFile;
 	SInt16 resourceID;
 	IconRef theIconRef;
+#ifndef RegisterIconRefFromResource
+	PyMac_PRECHECK(RegisterIconRefFromResource);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&O&h",
 	                      PyMac_GetOSType, &creator,
 	                      PyMac_GetOSType, &iconType,
@@ -821,6 +938,9 @@ static PyObject *Icn_UnregisterIconRef(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	OSType creator;
 	OSType iconType;
+#ifndef UnregisterIconRef
+	PyMac_PRECHECK(UnregisterIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      PyMac_GetOSType, &creator,
 	                      PyMac_GetOSType, &iconType))
@@ -838,6 +958,9 @@ static PyObject *Icn_UpdateIconRef(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	OSErr _err;
 	IconRef theIconRef;
+#ifndef UpdateIconRef
+	PyMac_PRECHECK(UpdateIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIconRef))
 		return NULL;
@@ -855,6 +978,9 @@ static PyObject *Icn_OverrideIconRefFromResource(PyObject *_self, PyObject *_arg
 	IconRef theIconRef;
 	FSSpec resourceFile;
 	SInt16 resourceID;
+#ifndef OverrideIconRefFromResource
+	PyMac_PRECHECK(OverrideIconRefFromResource);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&h",
 	                      ResObj_Convert, &theIconRef,
 	                      PyMac_GetFSSpec, &resourceFile,
@@ -875,6 +1001,9 @@ static PyObject *Icn_OverrideIconRef(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	IconRef oldIconRef;
 	IconRef newIconRef;
+#ifndef OverrideIconRef
+	PyMac_PRECHECK(OverrideIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      ResObj_Convert, &oldIconRef,
 	                      ResObj_Convert, &newIconRef))
@@ -892,6 +1021,9 @@ static PyObject *Icn_RemoveIconRefOverride(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	OSErr _err;
 	IconRef theIconRef;
+#ifndef RemoveIconRefOverride
+	PyMac_PRECHECK(RemoveIconRefOverride);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIconRef))
 		return NULL;
@@ -909,6 +1041,9 @@ static PyObject *Icn_CompositeIconRef(PyObject *_self, PyObject *_args)
 	IconRef backgroundIconRef;
 	IconRef foregroundIconRef;
 	IconRef compositeIconRef;
+#ifndef CompositeIconRef
+	PyMac_PRECHECK(CompositeIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      ResObj_Convert, &backgroundIconRef,
 	                      ResObj_Convert, &foregroundIconRef))
@@ -929,6 +1064,9 @@ static PyObject *Icn_IsIconRefComposite(PyObject *_self, PyObject *_args)
 	IconRef compositeIconRef;
 	IconRef backgroundIconRef;
 	IconRef foregroundIconRef;
+#ifndef IsIconRefComposite
+	PyMac_PRECHECK(IsIconRefComposite);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &compositeIconRef))
 		return NULL;
@@ -947,6 +1085,9 @@ static PyObject *Icn_IsValidIconRef(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	Boolean _rv;
 	IconRef theIconRef;
+#ifndef IsValidIconRef
+	PyMac_PRECHECK(IsValidIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &theIconRef))
 		return NULL;
@@ -965,6 +1106,9 @@ static PyObject *Icn_PlotIconRef(PyObject *_self, PyObject *_args)
 	IconTransformType transform;
 	IconServicesUsageFlags theIconServicesUsageFlags;
 	IconRef theIconRef;
+#ifndef PlotIconRef
+	PyMac_PRECHECK(PlotIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&hhlO&",
 	                      PyMac_GetRect, &theRect,
 	                      &align,
@@ -992,6 +1136,9 @@ static PyObject *Icn_PtInIconRef(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconServicesUsageFlags theIconServicesUsageFlags;
 	IconRef theIconRef;
+#ifndef PtInIconRef
+	PyMac_PRECHECK(PtInIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hlO&",
 	                      PyMac_GetPoint, &testPt,
 	                      PyMac_GetRect, &iconRect,
@@ -1018,6 +1165,9 @@ static PyObject *Icn_RectInIconRef(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconServicesUsageFlags iconServicesUsageFlags;
 	IconRef theIconRef;
+#ifndef RectInIconRef
+	PyMac_PRECHECK(RectInIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hlO&",
 	                      PyMac_GetRect, &testRect,
 	                      PyMac_GetRect, &iconRect,
@@ -1044,6 +1194,9 @@ static PyObject *Icn_IconRefToRgn(PyObject *_self, PyObject *_args)
 	IconAlignmentType align;
 	IconServicesUsageFlags iconServicesUsageFlags;
 	IconRef theIconRef;
+#ifndef IconRefToRgn
+	PyMac_PRECHECK(IconRefToRgn);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&hlO&",
 	                      ResObj_Convert, &theRgn,
 	                      PyMac_GetRect, &iconRect,
@@ -1070,6 +1223,9 @@ static PyObject *Icn_GetIconSizesFromIconRef(PyObject *_self, PyObject *_args)
 	IconSelectorValue iconSelectorOutputPtr;
 	IconServicesUsageFlags iconServicesUsageFlags;
 	IconRef theIconRef;
+#ifndef GetIconSizesFromIconRef
+	PyMac_PRECHECK(GetIconSizesFromIconRef);
+#endif
 	if (!PyArg_ParseTuple(_args, "llO&",
 	                      &iconSelectorInput,
 	                      &iconServicesUsageFlags,
@@ -1091,6 +1247,9 @@ static PyObject *Icn_FlushIconRefs(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	OSType creator;
 	OSType iconType;
+#ifndef FlushIconRefs
+	PyMac_PRECHECK(FlushIconRefs);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      PyMac_GetOSType, &creator,
 	                      PyMac_GetOSType, &iconType))
@@ -1108,6 +1267,9 @@ static PyObject *Icn_FlushIconRefsByVolume(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	OSErr _err;
 	SInt16 vRefNum;
+#ifndef FlushIconRefsByVolume
+	PyMac_PRECHECK(FlushIconRefsByVolume);
+#endif
 	if (!PyArg_ParseTuple(_args, "h",
 	                      &vRefNum))
 		return NULL;
@@ -1124,6 +1286,9 @@ static PyObject *Icn_SetCustomIconsEnabled(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	SInt16 vRefNum;
 	Boolean enableCustomIcons;
+#ifndef SetCustomIconsEnabled
+	PyMac_PRECHECK(SetCustomIconsEnabled);
+#endif
 	if (!PyArg_ParseTuple(_args, "hb",
 	                      &vRefNum,
 	                      &enableCustomIcons))
@@ -1142,6 +1307,9 @@ static PyObject *Icn_GetCustomIconsEnabled(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	SInt16 vRefNum;
 	Boolean customIconsEnabled;
+#ifndef GetCustomIconsEnabled
+	PyMac_PRECHECK(GetCustomIconsEnabled);
+#endif
 	if (!PyArg_ParseTuple(_args, "h",
 	                      &vRefNum))
 		return NULL;
@@ -1158,6 +1326,9 @@ static PyObject *Icn_IsIconRefMaskEmpty(PyObject *_self, PyObject *_args)
 	PyObject *_res = NULL;
 	Boolean _rv;
 	IconRef iconRef;
+#ifndef IsIconRefMaskEmpty
+	PyMac_PRECHECK(IsIconRefMaskEmpty);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      ResObj_Convert, &iconRef))
 		return NULL;
@@ -1176,6 +1347,9 @@ static PyObject *Icn_GetIconRefVariant(PyObject *_self, PyObject *_args)
 	IconRef inIconRef;
 	OSType inVariant;
 	IconTransformType outTransform;
+#ifndef GetIconRefVariant
+	PyMac_PRECHECK(GetIconRefVariant);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      ResObj_Convert, &inIconRef,
 	                      PyMac_GetOSType, &inVariant))
@@ -1200,6 +1374,9 @@ static PyObject *Icn_RegisterIconRefFromIconFile(PyObject *_self, PyObject *_arg
 	OSType iconType;
 	FSSpec iconFile;
 	IconRef theIconRef;
+#ifndef RegisterIconRefFromIconFile
+	PyMac_PRECHECK(RegisterIconRefFromIconFile);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&O&",
 	                      PyMac_GetOSType, &creator,
 	                      PyMac_GetOSType, &iconType,
@@ -1224,6 +1401,9 @@ static PyObject *Icn_ReadIconFile(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	FSSpec iconFile;
 	IconFamilyHandle iconFamily;
+#ifndef ReadIconFile
+	PyMac_PRECHECK(ReadIconFile);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&",
 	                      PyMac_GetFSSpec, &iconFile))
 		return NULL;
@@ -1244,6 +1424,9 @@ static PyObject *Icn_WriteIconFile(PyObject *_self, PyObject *_args)
 	OSErr _err;
 	IconFamilyHandle iconFamily;
 	FSSpec iconFile;
+#ifndef WriteIconFile
+	PyMac_PRECHECK(WriteIconFile);
+#endif
 	if (!PyArg_ParseTuple(_args, "O&O&",
 	                      ResObj_Convert, &iconFamily,
 	                      PyMac_GetFSSpec, &iconFile))