Usage:  configure [options] [assignments]

Configure understands variable assignments like VAR=value on the command line.
These override any values possibly obtained from pkg-config. The variables
are mentioned in the descriptions of the options they relate to.

It is also possible to manipulate any QMAKE_* variable, to amend the values
from the mkspec for the build of Qt itself, e.g., QMAKE_CXXFLAGS+=-g3.

Top-level installation directories:
  -prefix <dir> ...... The deployment directory, as seen on the target device.
                       [/usr/local/Qt-$QT_VERSION, $PWD if -developer-build]
  -extprefix <dir> ... The installation directory, as seen on the host machine.
                       [SYSROOT/PREFIX]
  -hostprefix [dir] .. The installation directory for build tools running on
                       the host machine. If [dir] is not given, the current
                       build directory will be used. [EXTPREFIX]
  -external-hostbindir <path> ... Path to Qt tools built for this machine.
                       Use this when -platform does not match the current
                       system, i.e., to make a Canadian Cross Build.

Fine tuning of installation directory layout. Note that all directories
except -sysconfdir should be located under -prefix/-hostprefix:

  -bindir <dir> ......... Executables [PREFIX/bin]
  -headerdir <dir> ...... Header files [PREFIX/include]
  -libdir <dir> ......... Libraries [PREFIX/lib]
  -archdatadir <dir> .... Arch-dependent data [PREFIX]
  -plugindir <dir> ...... Plugins [ARCHDATADIR/plugins]
  -libexecdir <dir> ..... Helper programs [ARCHDATADIR/bin on Windows,
                          ARCHDATADIR/libexec otherwise]
  -importdir <dir> ...... QML1 imports [ARCHDATADIR/imports]
  -qmldir <dir> ......... QML2 imports [ARCHDATADIR/qml]
  -datadir <dir> ........ Arch-independent data [PREFIX]
  -docdir <dir> ......... Documentation [DATADIR/doc]
  -translationdir <dir> . Translations [DATADIR/translations]
  -sysconfdir <dir> ..... Settings used by Qt programs [PREFIX/etc/xdg]
  -examplesdir <dir> .... Examples [PREFIX/examples]
  -testsdir <dir> ....... Tests [PREFIX/tests]

  -hostbindir <dir> ..... Host executables [HOSTPREFIX/bin]
  -hostlibdir <dir> ..... Host libraries [HOSTPREFIX/lib]
  -hostdatadir <dir> .... Data used by qmake [HOSTPREFIX]

Conventions for the remaining options: When an option's description is
followed by a list of values in brackets, the interpretation is as follows:
'yes' represents the bare option; all other values are possible prefixes to
the option, e.g., -no-gui. Alternatively, the value can be assigned, e.g.,
--gui=yes. Values are listed in the order they are tried if not specified;
'auto' is a shorthand for 'yes/no'. Solitary 'yes' and 'no' represent binary
options without auto-detection.

Configure meta:

  -help, -h ............ Display this help screen
  -verbose, -v ......... Print verbose messages during configuration
  -continue ............ Continue configure despite errors
  -redo ................ Re-configure with previously used options.
                         Additional options may be passed, but will not be
                         saved for later use by -redo.
  -recheck ............. Discard cached negative configure test results.
                         Use this after installing missing dependencies.
  -recheck-all ......... Discard all cached configure test results.

Build options:

  -opensource .......... Build the Open-Source Edition of Qt
  -commercial .......... Build the Commercial Edition of Qt
  -confirm-license ..... Automatically acknowledge the license

  -release ............. Build Qt with debugging turned off [yes]
  -debug ............... Build Qt with debugging turned on [no]
  -debug-and-release ... Build two versions of Qt, with and without
                         debugging turned on [yes] (Apple and Windows only)
  -optimized-tools ..... Build optimized host tools even in debug build [no]
  -force-debug-info .... Create symbol files for release builds [no]
  -separate-debug-info . Split off debug information to separate files [no]
  -strip ............... Strip release binaries of unneeded symbols [yes]
  -force-asserts ....... Enable Q_ASSERT even in release builds [no]
  -developer-build ..... Compile and link Qt for developing Qt itself
                         (exports for auto-tests, extra checks, etc.) [no]

  -shared .............. Build shared Qt libraries [yes] (no for UIKit)
  -static .............. Build static Qt libraries [no] (yes for UIKit)
  -framework ........... Build Qt framework bundles [yes] (Apple only)

  -platform <target> ... Select host mkspec [detected]
  -host-option <key=value> ..... Add option for the host mkspec
  -xplatform <target> .. Select target mkspec when cross-compiling [PLATFORM]
  -device <name> ....... Cross-compile for device <name>
  -device-option <key=value> ... Add option for the device mkspec

  -qtnamespace <name> .. Wrap all Qt library code in 'namespace <name> {...}'.
  -qtlibinfix <infix> .. Rename all libQt5*.so to libQt5*<infix>.so.

  -testcocoon .......... Instrument with the TestCocoon code coverage tool [no]
  -gcov ................ Instrument with the GCov code coverage tool [no]
  -sanitize {address|thread|memory|undefined}
                         Instrument with the specified compiler sanitizer.

  -c++std <edition> .... Select C++ standard <edition> [c++1z/c++14/c++11]
                         (Not supported with MSVC)
  -rtti ................ Build with Runtime Type Information [yes] (MSVC only)

  -sse2 ................ Use SSE2 instructions [auto]
  -sse3/-ssse3/-sse4.1/-sse4.2/-avx/-avx2/-avx512
                         Enable use of particular x86 instructions [auto]
                         Enabled ones are still subject to runtime detection.
  -mips_dsp/-mips_dspr2  Use MIPS DSP/rev2 instructions [auto]

  -qreal <type> ........ typedef qreal to the specified type. [double]
                         Note: this affects binary compatibility.

  -R <string> .......... Add an explicit runtime library path to the Qt
                         libraries. Supports paths relative to LIBDIR.
  -rpath ............... Link Qt libraries and executables using the library
                         install path as a runtime library path. Similar to
                         -R LIBDIR. On Apple platforms, disabling this implies
                         using absolute install names (based in LIBDIR) for
                         dynamic libraries and frameworks. [auto]

  -reduce-exports ...... Reduce amount of exported symbols [auto]
  -reduce-relocations .. Reduce amount of relocations [auto] (Unix only)

  -plugin-manifests .... Embed manifests into plugins [no] (Windows only)
  -static-runtime ...... With -static, use static runtime [no] (Windows only)

  -pch ................. Use precompiled headers [auto]
  -ltcg ................ Use Link Time Code Generation [no]
  -use-gold-linker ..... Use the GNU gold linker [auto]
  -incredibuild-xge .... Use the IncrediBuild XGE [no] (Windows only)
  -make-tool <tool> .... Use <tool> to build qmake [nmake] (Windows only)
  -mp .................. Use multiple processors for compilation (MSVC only)

  -warnings-are-errors . Treat warnings as errors [no; yes if -developer-build]
  -silent .............. Reduce the build output so that warnings and errors
                         can be seen more easily

Build environment:

  -sysroot <dir> ....... Set <dir> as the target sysroot
  -gcc-sysroot ......... With -sysroot, pass --sysroot to the compiler [yes]

  -pkg-config .......... Use pkg-config [auto] (Unix only)

  -D <string> .......... Pass additional preprocessor define
  -I <string> .......... Pass additional include path
  -L <string> .......... Pass additional library path
  -F <string> .......... Pass additional framework path (Apple only)

  -sdk <sdk> ........... Build Qt using Apple provided SDK <sdk>. The argument
                         should be one of the available SDKs as listed by
                         'xcodebuild -showsdks'.
                         Note that the argument applies only to Qt libraries
                         and applications built using the target mkspec - not
                         host tools such as qmake, moc, rcc, etc.

  -android-sdk path .... Set Android SDK root path [$ANDROID_SDK_ROOT]
  -android-ndk path .... Set Android NDK root path [$ANDROID_NDK_ROOT]
  -android-ndk-platform  Set Android platform
  -android-ndk-host .... Set Android NDK host (linux-x86, linux-x86_64, etc.)
                         [$ANDROID_NDK_HOST]
  -android-arch ........ Set Android architecture (armeabi, armeabi-v7a,
                         arm64-v8a, x86, x86_64, mips, mips64)
  -android-toolchain-version ... Set Android toolchain version
  -android-style-assets  Automatically extract style assets from the device at
                         run time. This option makes the Android style behave
                         correctly, but also makes the Android platform plugin
                         incompatible with the LGPL2.1. [yes]

Component selection:

  -skip <repo> ......... Exclude an entire repository from the build.
  -make <part> ......... Add <part> to the list of parts to be built.
                         Specifying this option clears the default list first.
                         [libs and examples, also tools if not cross-building,
                         also tests if -developer-build]
  -nomake <part> ....... Exclude <part> from the list of parts to be built.
  -compile-examples .... When unset, install only the sources of examples [yes]
  -gui ................. Build the Qt GUI module and dependencies [yes]
  -widgets ............. Build the Qt Widgets module and dependencies [yes]
  -no-dbus ............. Do not build the Qt D-Bus module
                         [default on Android and Windows]
  -dbus-linked ......... Build Qt D-Bus and link to libdbus-1 [auto]
  -dbus-runtime ........ Build Qt D-Bus and dynamically load libdbus-1 [no]
                         DBUS_PATH= DBUS_HOST_PATH=
  -feature-<feature> ... Enable <feature>. The available features are described
                         in src/corelib/global/qfeatures.txt. [all enabled]
  -accessibility ....... Enable accessibility support [yes]
                         Note: Disabling accessibility is not recommended.
  -qml-debug ........... Enable QML debugging support [yes]

Qt comes with bundled copies of some 3rd party libraries. These are used
by default if auto-detection of the respective system library fails.

Core options:

  -doubleconversion .... Select used double conversion library [system/qt/no]
                         No implies use of sscanf_l and snprintf_l (imprecise).
  -glib ................ Enable Glib support [no; auto on Unix]
  -eventfd ............. Enable eventfd support
  -inotify ............. Enable inotify support
  -iconv ............... Enable iconv(3) support [posix/sun/gnu/no] (Unix only)
  -icu ................. Enable ICU support [auto]
  -pps ................. Enable PPS support [auto] (QNX only)
  -pcre ................ Select used libpcre3 [system/qt]
  -zlib ................ Select used zlib [system/qt]
                         ZLIB_LIBS=

  Logging backends:
    -journald .......... Enable journald support [no] (Unix only)
    -syslog ............ Enable syslog support [no] (Unix only)
    -slog2 ............. Enable slog2 support [auto] (QNX only)

Network options:

  -ssl ................. Enable either SSL support method [auto]
  -no-openssl .......... Do not use OpenSSL [default on Apple and WinRT]
  -openssl-linked ...... Use OpenSSL and link to libssl [no]
  -openssl-runtime ..... Use OpenSSL and dynamically load libssl [auto]
                         OPENSSL_PATH= OPENSSL_LIBS=, and on Windows also
                         OPENSSL_LIBS_DEBUG= OPENSSL_LIBS_RELEASE=
  -securetransport ..... Use SecureTransport [auto] (Apple only)

  -sctp ................ Enable SCTP support [no]

  -libproxy ............ Enable use of libproxy [no]
  -system-proxies ...... Use system network proxies by default [yes]

Gui, printing, widget options:

  -cups ................ Enable CUPS support [auto] (Unix only)

  -fontconfig .......... Enable Fontconfig support [auto] (Unix only)
  -freetype ............ Select used FreeType [system/qt/no]
  -harfbuzz ............ Select used HarfBuzz-NG [system/qt/no]
                         (Not auto-detected on Apple and Windows)

  -gtk ................. Enable GTK platform theme support [auto]

  -lgmon ............... Enable lgmon support [auto] (QNX only)

  -no-opengl ........... Disable OpenGL support
  -opengl <api> ........ Enable OpenGL support. Supported APIs:
                         es2 (default on Windows), desktop (default on Unix),
                         dynamic (Windows only)
  -opengles3 ........... Enable OpenGL ES 3.x support instead of ES 2.x [auto]
  -angle ............... Use bundled ANGLE to support OpenGL ES 2.0 [auto]
                         (Windows only)

  -qpa <name> .......... Select default QPA backend (e.g., xcb, cocoa, windows)
  -xcb-xlib............. Enable Xcb-Xlib support [auto]

  Platform backends:
    -direct2d .......... Enable Direct2D support [auto] (Windows only)
    -directfb .......... Enable DirectFB support [no] (Unix only)
    -eglfs ............. Enable EGLFS support [auto; no on Android and Windows]
    -gbm ............... Enable backends for GBM [auto] (Linux only)
    -kms ............... Enable backends for KMS [auto] (Linux only)
    -linuxfb ........... Enable Linux Framebuffer support [auto] (Linux only)
    -mirclient ......... Enable Mir client support [no] (Linux only)
    -xcb ............... Select used xcb-* libraries [system/qt/no]
                         (-qt-xcb still uses system version of libxcb itself)

  Input backends:
    -evdev ............. Enable evdev support [auto]
    -imf ............... Enable IMF support [auto] (QNX only)
    -libinput .......... Enable libinput support [auto]
    -mtdev ............. Enable mtdev support [auto]
    -tslib ............. Enable tslib support [auto]
    -xinput2 ........... Enable XInput2 support [auto]
    -xkbcommon-x11 ..... Select xkbcommon used in combination with xcb
                         [system/qt/no]
    -xkb-config-root <dir> ... With -qt-xkbcommon-x11, set default XKB config
                               root <dir> [detect]
    -xkbcommon-evdev ... Enable X-less xkbcommon in combination with libinput
                         [auto]

  Image formats:
    -gif ............... Enable reading support for GIF [auto]
    -ico ............... Enable support for ICO [yes]
    -libpng ............ Select used libpng [system/qt/no]
    -libjpeg ........... Select used libjpeg [system/qt/no]

Database options:

  -sql-<driver> ........ Enable SQL <driver> plugin. Supported drivers:
                         db2 ibase mysql oci odbc psql sqlite2 sqlite tds
                         [all auto]
                         MYSQL_PATH= PSQL_LIBS= SYBASE= SYBASE_LIBS=
  -sqlite .............. Select used sqlite3 [system/qt]
