702bda5cc9
Processing the object file with ld strips away debug information for the main() function, resulting in the debugger not being able to break on specific lines of the function. It also causes issues when externing sybols in main's object file. We revert back to the approach of using the strings in-line in the object file (which is why we keep the name the same length, 'qtmn'). Task-number: QTBUG-35553 Change-Id: I8b0acee36f48ecfefa2e4fd008a842365713d985 Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
50 lines
2.3 KiB
Plaintext
50 lines
2.3 KiB
Plaintext
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equals(TEMPLATE, app):contains(QT, gui(-private)?) {
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LIBS *= -L$$[QT_INSTALL_PLUGINS/get]/platforms
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lib_name = qios
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lib_path_and_base = $$[QT_INSTALL_PLUGINS/get]/platforms/lib$${lib_name}$$qtPlatformTargetSuffix()
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LIBS += -l$${lib_name}$$qtPlatformTargetSuffix() $$fromfile($${lib_path_and_base}.prl, QMAKE_PRL_LIBS)
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# By marking qt_registerPlatformPlugin as undefined, we ensure that
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# the plugin.o translation unit is considered for inclusion in
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# the final binary, which in turn ensures that the plugin's
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# static initializer is included and run.
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QMAKE_LFLAGS += -u _qt_registerPlatformPlugin
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# We do link and dependency resolution for the platform plugin
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# manually, since we know we always need the plugin, so we don't
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# need to generate an import for it.
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CONFIG -= import_qpa_plugin
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!no_main_wrapper {
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# We use ld to rename the _main symbol to _qt_main, so that we don't get a symbol clash
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# with the _main we provide that calls UIApplicationMain. We need to make a copy of the
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# original object file, as ld will not copy over DWARF debug information to the output
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# file. Instead, it will inject a reference back to the original object file, so when
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# Xcode runs dsymutil to make the final dSYM file it will still find the debug info
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# for the object file that provided the original _main. This back-reference has the
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# interesting side-effect of the debug information still referring to the original
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# symbol name, so stack-traces will show both our wrapper main and the original
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# user main as 'main', and adding a symbolic breakpoint for 'main' will break on
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# both functions. Although a bit weird, it's a good thing, as the user will still be
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# able to add symbolic breakpoints for 'main', not caring that the symbol is actually
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# called 'qt_main' now.
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macx-xcode {
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objects_dir = "${OBJECT_FILE_DIR}-${CURRENT_VARIANT}/${CURRENT_ARCH}"
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} else {
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objects_dir = $$OBJECTS_DIR
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isEmpty(objects_dir): \
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objects_dir = .
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}
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!isEmpty(QMAKE_PRE_LINK): \
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QMAKE_PRE_LINK += ";"
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QMAKE_PRE_LINK += $$QMAKESPEC/rename_main.sh $${objects_dir}
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}
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}
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load(qt)
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