重生之夏日倾情千千:Qt Embedded开发介绍之配置参数篇

QtEmbedded开发介绍之配置参数篇上

经常有人会在BBS和QQ群上大喊：怎么裁剪Qt，怎么安装那么困难啊。

每当我看见时，都是非常无奈，其实Qt有套良好的配置安装机制，跟大多数linux程序一样，典型的先configure，然后make，最后make install三部曲。而如果要裁剪参数，其实可以在configure加上对应的参数来实现，通过合理的选择，完全可以做到满足项目的开发。对于嵌入式开发来说，资源是极其重要的，这就要求我们应该对应不同的项目开发，对Qte进行不同的裁剪来实现。

其实，在前面的减少Qt编译时间暨简单Qt裁剪已经对这个题目有了非常详细的概述，并且通过qconfig工具可以做到控件级的裁剪，但是如果能在configure阶段，能搞清楚参数，我想对于开发也是有很大的帮助。

为了与时俱进，本人的例子都是参照qt-embedded-linux-opensource-src-4.5.x系列。

当进入解压好的源码包后，使用./configure –help命令，可以获得相应帮助，那我们只要选取参数部分看看就OK

Configure options:

The defaults (*) are usually acceptable. A plus (+) denotes a default value
that needs to be evaluated. If the evaluation succeeds, the feature is
included. Here is a short explanation of each option:

*  -release ……….. Compile and link Qt with debugging turned off.
-debug …………. Compile and link Qt with debugging turned on.
-debug-and-release . Compile and link two versions of Qt, with and without
debugging turned on (Mac only).

-developer-build…. Compile and link Qt with Qt developer options (including auto-tests exporting)

-opensource……… Compile and link the Open-Source Edition of Qt.
-commercial……… Compile and link the Commercial Edition of Qt.

*  -shared ………… Create and use shared Qt libraries.
-static ………… Create and use static Qt libraries.

*  -no-fast ……….. Configure Qt normally by generating Makefiles for all
project files.
-fast ………….. Configure Qt quickly by generating Makefiles only for
library and subdirectory targets.  All other Makefiles
are created as wrappers, which will in turn run qmake.

-no-largefile …… Disables large file support.
+  -largefile ……… Enables Qt to access files larger than 4 GB.

*  -no-exceptions ….. Disable exceptions on compilers that support it.
-exceptions …….. Enable exceptions on compilers that support it.

-no-accessibility .. Do not compile Accessibility support.
*  -accessibility ….. Compile Accessibility support.

-no-stl ………… Do not compile STL support.
*  -stl …………… Compile STL support.

-no-sql- … Disable SQL entirely.
-qt-sql- … Enable a SQL in the QtSql library, by default
none are turned on.
-plugin-sql- Enable SQL as a plugin to be linked to
at run time.

Possible values for :
[  db2 ibase mysql oci odbc psql sqlite sqlite2 tds ]

-system-sqlite ….. Use sqlite from the operating system.

-no-qt3support ….. Disables the Qt 3 support functionality.
*  -qt3support …….. Enables the Qt 3 support functionality.

-no-xmlpatterns …. Do not build the QtXmlPatterns module.
+  -xmlpatterns ……. Build the QtXmlPatterns module.
QtXmlPatterns is built if a decent C++ compiler
is used and exceptions are enabled.

-no-phonon ……… Do not build the Phonon module.
+  -phonon ………… Build the Phonon module.
Phonon is built if a decent C++ compiler is used.
-no-phonon-backend.. Do not build the platform phonon plugin.
+  -phonon-backend….. Build the platform phonon plugin.

-no-svg ………… Do not build the SVG module.
+  -svg …………… Build the SVG module.

-no-webkit ……… Do not build the WebKit module.
+  -webkit ………… Build the WebKit module.
WebKit is built if a decent C++ compiler is used.

-no-scripttools …. Do not build the QtScriptTools module.
+  -scripttools ……. Build the QtScriptTools module.

-platform target … The operating system and compiler you are building
on (qws/linux-x86-g++).

See the README file for a list of supported
operating systems and compilers.

-no-mmx ………… Do not compile with use of MMX instructions.
-no-3dnow ………. Do not compile with use of 3DNOW instructions.
-no-sse ………… Do not compile with use of SSE instructions.
-no-sse2 ……….. Do not compile with use of SSE2 instructions.

-qtnamespace   Wraps all Qt library code in ‘namespace {…}’.
-qtlibinfix   Renames all libQt*.so to libQt*.so.

-D …….. Add an explicit define to the preprocessor.
-I …….. Add an explicit include path.
-L …….. Add an explicit library path.

-help, -h ………. Display this information.

Third Party Libraries:

-qt-zlib ……….. Use the zlib bundled with Qt.
+  -system-zlib ……. Use zlib from the operating system.
See http://www.gzip.org/zlib

-no-gif ………… Do not compile the plugin for GIF reading support.
*  -qt-gif ………… Compile the plugin for GIF reading support.
See also src/plugins/imageformats/gif/qgifhandler.h

-no-libtiff …….. Do not compile the plugin for TIFF support.
-qt-libtiff …….. Use the libtiff bundled with Qt.
+  -system-libtiff …. Use libtiff from the operating system.
See http://www.libtiff.org

-no-libpng ……… Do not compile in PNG support.
-qt-libpng ……… Use the libpng bundled with Qt.
+  -system-libpng ….. Use libpng from the operating system.
See http://www.libpng.org/pub/png

-no-libmng ……… Do not compile the plugin for MNG support.
-qt-libmng ……… Use the libmng bundled with Qt.
+  -system-libmng ….. Use libmng from the operating system.
See http://www.libmng.com

-no-libjpeg …….. Do not compile the plugin for JPEG support.
-qt-libjpeg …….. Use the libjpeg bundled with Qt.
+  -system-libjpeg …. Use libjpeg from the operating system.
See http://www.ijg.org

-no-openssl …….. Do not compile support for OpenSSL.
+  -openssl ……….. Enable run-time OpenSSL support.
-openssl-linked …. Enabled linked OpenSSL support.

-ptmalloc ………. Override the system memory allocator with ptmalloc.
(Experimental.)

Additional options:

-make ……. Add part to the list of parts to be built at make time.
(libs tools examples demos docs translations)
-nomake ….. Exclude part from the list of parts to be built.

-R …….. Add an explicit runtime library path to the Qt
libraries.
-l …….. Add an explicit library.

-no-rpath ………. Do not use the library install path as a runtime
library path.
+  -rpath …………. Link Qt libraries and executables using the library
install path as a runtime library path. Equivalent
to -R install_libpath

-continue ………. Continue as far as possible if an error occurs.

-verbose, -v ……. Print verbose information about each step of the
configure process.

-silent ………… Reduce the build output so that warnings and errors
can be seen more easily.

*  -no-optimized-qmake … Do not build qmake optimized.
-optimized-qmake …… Build qmake optimized.

-no-nis ………… Do not compile NIS support.
*  -nis …………… Compile NIS support.

-no-cups ……….. Do not compile CUPS support.
*  -cups ………….. Compile CUPS support.
Requires cups/cups.h and libcups.so.2.

-no-iconv ………. Do not compile support for iconv(3).
*  -iconv …………. Compile support for iconv(3).

-no-pch ………… Do not use precompiled header support.
*  -pch …………… Use precompiled header support.

-no-dbus ……….. Do not compile the QtDBus module.
+  -dbus ………….. Compile the QtDBus module and dynamically load libdbus-1.
-dbus-linked ……. Compile the QtDBus module and link to libdbus-1.

-reduce-relocations ….. Reduce relocations in the libraries through extra
linker optimizations (Qt/X11 and Qt for Embedded Linux only;
experimental; needs GNU ld >= 2.18).

-no-separate-debug-info . Do not store debug information in a separate file.
*  -separate-debug-info …. Strip debug information into a separate .debug file.

Qt for Embedded Linux only:

-xplatform target … The target platform when cross-compiling.

-no-feature- Do not compile in .
-feature- .. Compile in . The available features
are described in src/corelib/global/qfeatures.txt

-embedded …. This will enable the embedded build, you must have a
proper license for this switch to work.
Example values for : arm mips x86 generic

-armfpa …………. Target platform is uses the ARM-FPA floating point format.
-no-armfpa ………. Target platform does not use the ARM-FPA floating point format.

The floating point format is usually autodetected by configure. Use this
to override the detected value.

-little-endian …… Target platform is little endian (LSB first).
-big-endian ……… Target platform is big endian (MSB first).

-host-little-endian . Host platform is little endian (LSB first).
-host-big-endian …. Host platform is big endian (MSB first).

You only need to specify the endianness when
cross-compiling, otherwise the host
endianness will be used.

-no-freetype …….. Do not compile in Freetype2 support.
-qt-freetype …….. Use the libfreetype bundled with Qt.
*  -system-freetype …. Use libfreetype from the operating system.
See http://www.freetype.org/

-qconfig local …… Use src/corelib/global/qconfig-local.h rather than the
default (full).

-depths …… Comma-separated list of supported bit-per-pixel
depths, from: 1, 4, 8, 12, 15, 16, 18, 24, 32 and ‘all’.

-qt-decoration-