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51 lines
2.0 KiB
Plaintext
51 lines
2.0 KiB
Plaintext
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#
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# W A R N I N G
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# -------------
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#
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# This file is not part of the Qt API. It exists purely as an
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# implementation detail. It may change from version to version
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# without notice, or even be removed.
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#
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# We mean it.
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#
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# The Objective-C runtime will complain when loading a binary that
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# introduces as class name that already exists in the global namespace.
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# This may happen when linking Qt statically into a plugin, and then
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# loading more than two plugins into the same host, both using Qt.
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#
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# We work around this by doing a bit of post-processing on the final
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# binary, adding new suffixed class name entries to the __objc_classname
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# section of the __TEXT segment, and then patching the class_ro_t
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# entries to point to the newly added class names.
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#
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# By linking the binary between these two steps we avoid having to
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# manually remap all the offsets in the Mach-O binary due to the
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# added class names, instead relying on the linker to do this
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# for us by linking in an assembly file with the added names.
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objc_namespace_script = $$clean_path($$PWD/../../data/mac/objc_namespace.sh)
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isEmpty(QMAKE_OBJC_NAMESPACE_SUFFIX) {
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QMAKE_OBJC_NAMESPACE_SUFFIX = $$TARGET
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!isEmpty(QMAKE_TARGET_BUNDLE_PREFIX): \
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QMAKE_OBJC_NAMESPACE_SUFFIX = $${QMAKE_TARGET_BUNDLE_PREFIX}.$${QMAKE_OBJC_NAMESPACE_SUFFIX}
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}
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QMAKE_LFLAGS += \
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-Wobjc_namespace,--target=$$shell_quote($$TARGET) \
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-Wobjc_namespace,--suffix=$$shell_quote($$QMAKE_OBJC_NAMESPACE_SUFFIX) \
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-Wobjc_namespace,--original_ld=$$shell_quote($$QMAKE_LINK)
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!isEmpty(QMAKE_OBJC_NAMESPACE_EXCLUDE): \
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QMAKE_LFLAGS += -Wobjc_namespace,--exclude_list=$$shell_quote($$QMAKE_OBJC_NAMESPACE_EXCLUDE)
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!isEmpty(QMAKE_OBJC_NAMESPACE_EXCLUDE_REGEX) {
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equals(MAKEFILE_GENERATOR, UNIX): \
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QMAKE_OBJC_NAMESPACE_EXCLUDE_REGEX ~= s/\\$/\$\$/
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QMAKE_LFLAGS += -Wobjc_namespace,--exclude_regex=$$shell_quote($$QMAKE_OBJC_NAMESPACE_EXCLUDE_REGEX)
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}
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slient: QMAKE_LFLAGS += -Wobjc_namespace,--silent=1
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QMAKE_LINK = $$objc_namespace_script
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