Further reduce Qt6 binary sizes

Description

As far as Qt binaries are concerned, we would prefer binary sizes over performance as these binaries are not used so often. This is rather important for universal binary build in macOS, where we literally bundle two binaries (#801).

We do already tweak Qt build configure options in favor of smaller binaries, but let's see if there are any other options we can further specify to reduce binary sizes.

mozc/src/build_tools/build_qt.py

Lines 263 to 314 in 4c63ed6

    
           qt_configure_options = ['-opensource', 
        
                                   '-c++std', 'c++20', 
        
                                   '-silent', 
        
                                   '-no-cups', 
        
                                   '-no-dbus', 
        
                                   '-no-feature-concurrent', 
        
                                   '-no-feature-imageformatplugin', 
        
                                   '-no-feature-network', 
        
                                   '-no-feature-sql', 
        
                                   '-no-feature-sqlmodel', 
        
                                   '-no-feature-testlib', 
        
                                   '-no-feature-xml', 
        
                                   '-no-icu', 
        
                                   '-no-opengl', 
        
                                   '-no-sql-db2', 
        
                                   '-no-sql-ibase', 
        
                                   '-no-sql-mysql', 
        
                                   '-no-sql-oci', 
        
                                   '-no-sql-odbc', 
        
                                   '-no-sql-psql', 
        
                                   '-no-sql-sqlite', 
        
                                   '-nomake', 'examples', 
        
                                   '-nomake', 'tests', 
        
                                  ] 
        
           cmake_options = [] 
        
           if is_mac(): 
        
             qt_configure_options += [ 
        
                 '-platform', 'macx-clang', 
        
                 '-qt-libpng', 
        
                 '-qt-pcre', 
        
             ] 
        
             if args.macos_cpus: 
        
               macos_cpus = args.macos_cpus.split(',') 
        
               host_arch = os.uname().machine 
        
               if host_arch == 'x86_64' and macos_cpus == ['arm64']: 
        
                 # Haven't figured out how to make this work... 
        
                 raise ValueError('--macos_cpus=arm64 on Intel64 mac is not supported.') 
        
               # 'x86_64' needs to be the first entry if exists. 
        
               # https://doc-snapshots.qt.io/qt6-6.5/macos-building.html#step-2-build-the-qt-library 
        
               if 'x86_64' in macos_cpus and macos_cpus[0] != 'x86_64': 
        
                 macos_cpus.remove('x86_64') 
        
                 macos_cpus = ['x86_64'] + macos_cpus 
        
               cmake_options += [ 
        
                   '-DCMAKE_OSX_ARCHITECTURES:STRING=' + ';'.join(macos_cpus), 
        
               ] 
        
           elif is_windows(): 
        
             qt_configure_options += ['-force-debug-info', 
        
                                      '-ltcg',  # Note: ignored in debug build 
        
                                      '-no-freetype', 
        
                                      '-no-harfbuzz', 
        
                                      '-platform', 'win32-msvc']

Version or commit-id

4c63ed6

Environment

OS: macOS and Windows

Specify '-optimize-size' when building Qt6

Specify '-optimize-size' only when building release binaries

Fix HTML text on the about dialog in Windows

Update BUILD_OSS to 5268

Specify '-optimize-size' when building Qt6

Exclude more unused features when building Qt6

Specify '-optimize-size' only when building release binaries

Fix HTML text on the about dialog in Windows

Update BUILD_OSS to 5268

Exclude more unused features when building Qt6

Sunbelt Computer Software

PL/B Language Development and Support

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Further reduce Qt6 binary sizes #822

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	qt_configure_options = ['-opensource',
	'-c++std', 'c++20',
	'-silent',
	'-no-cups',
	'-no-dbus',
	'-no-feature-concurrent',
	'-no-feature-imageformatplugin',
	'-no-feature-network',
	'-no-feature-sql',
	'-no-feature-sqlmodel',
	'-no-feature-testlib',
	'-no-feature-xml',
	'-no-icu',
	'-no-opengl',
	'-no-sql-db2',
	'-no-sql-ibase',
	'-no-sql-mysql',
	'-no-sql-oci',
	'-no-sql-odbc',
	'-no-sql-psql',
	'-no-sql-sqlite',
	'-nomake', 'examples',
	'-nomake', 'tests',
	]
	cmake_options = []

	if is_mac():
	qt_configure_options += [
	'-platform', 'macx-clang',
	'-qt-libpng',
	'-qt-pcre',
	]
	if args.macos_cpus:
	macos_cpus = args.macos_cpus.split(',')
	host_arch = os.uname().machine
	if host_arch == 'x86_64' and macos_cpus == ['arm64']:
	# Haven't figured out how to make this work...
	raise ValueError('--macos_cpus=arm64 on Intel64 mac is not supported.')
	# 'x86_64' needs to be the first entry if exists.
	# https://doc-snapshots.qt.io/qt6-6.5/macos-building.html#step-2-build-the-qt-library
	if 'x86_64' in macos_cpus and macos_cpus[0] != 'x86_64':
	macos_cpus.remove('x86_64')
	macos_cpus = ['x86_64'] + macos_cpus
	cmake_options += [
	'-DCMAKE_OSX_ARCHITECTURES:STRING=' + ';'.join(macos_cpus),
	]
	elif is_windows():
	qt_configure_options += ['-force-debug-info',
	'-ltcg', # Note: ignored in debug build
	'-no-freetype',
	'-no-harfbuzz',
	'-platform', 'win32-msvc']

Sunbelt Computer Software

PL/B Language Development and Support

Further reduce Qt6 binary sizes #822

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