d50a707b0f
Make configure behaviour consistent with CMake the default value of 0 for wxUSE_LIBLZMA in setup.h under MSW. This also means that dependency on the system liblzma is not picked up by default when --disable-sys-libs configure option is used, as this was rather unexpected.
146 lines
6.1 KiB
C
146 lines
6.1 KiB
C
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: liblzma.h
|
|
// Purpose: Documentation of the use of liblzma with wxWidgets
|
|
// Author: Vadim Zeitlin <vadim@wxwidgets.org>
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
/**
|
|
|
|
@page page_build_liblzma Using LZMA compression with liblzma
|
|
|
|
To use wxLZMAInputStream and wxLZMAOutputStream classes, a public domain
|
|
liblzma library is required when building wxWidgets. This guide explains how to
|
|
make liblzma available and let wxWidgets build system use it. The exact steps
|
|
depend on the operating system and compiler used, please refer to the
|
|
section appropriate for your environment below.
|
|
|
|
@section page_build_liblzma_unix Unix-like operating system (including Cygwin)
|
|
|
|
Under many Unix or Unix-like (including Cygwin) systems, liblzma is available
|
|
as a system package and the simplest thing to do is to just install it using
|
|
the system-specific tool (apt, yum, ...). Just note that you need to install
|
|
the liblzma-dev or liblzma-devel package in order to obtain the library headers
|
|
and not just the library itself.
|
|
|
|
If your system doesn't provide such package or you need to use a newer version
|
|
than is available in the system repositories, it is also simple to build
|
|
liblzma from sources: basically, just download the library sources from
|
|
https://tukaani.org/xz/ or clone its repository and perform the usual
|
|
|
|
@code
|
|
$ ./configure
|
|
$ make
|
|
$ make install
|
|
@endcode
|
|
|
|
commands sequence.
|
|
|
|
@subsection page_build_liblzma_configure Use liblzma with configure
|
|
|
|
Pass @c --with-liblzma option to configure to enable liblzma and check the end
|
|
of configure output to confirm that it was found. If this is not the case
|
|
because the library was installed in some non-default location, you need to
|
|
provide @c CPPFLAGS and @c LDFLAGS on configure command line, e.g.:
|
|
|
|
@code
|
|
$ ../configure --with-liblzma CPPFLAGS=-I/opt/liblzma/include LDFLAGS=-L/opt/liblzma/lib
|
|
@endcode
|
|
|
|
@subsection page_build_liblzma_cmake Use liblzma with CMake
|
|
|
|
When using CMake, add @c -DwxUSE_LIBLZMA=ON to CMake command line to enable
|
|
using liblzma.
|
|
|
|
|
|
@section page_build_liblzma_msw MSW not using configure
|
|
|
|
When not using configure, you must edit @c wx/msw/setup.h file and change the
|
|
value of @c wxUSE_LIBLZMA option to @c 1 manually in order to enable LZMA
|
|
support, which is disabled by default.
|
|
|
|
Next, you need to actually ensure that the library is available to be able to
|
|
build wxWidgets:
|
|
|
|
@subsection page_build_liblzma_msw_vcpkg MSW using MSVS 2015 with Vcpkg
|
|
|
|
If you build wxWidgets with Microsoft Visual Studio 2015.3 or later, you can
|
|
use Microsoft vcpkg tool (see https://github.com/Microsoft/vcpkg) to install
|
|
liblzma as any other library and integrate it with Microsoft Visual Studio
|
|
automatically. Please see vcpkg documentation for details, but, basically, it's
|
|
as simple as executing the following commands:
|
|
|
|
@code
|
|
> git clone https://github.com/Microsoft/vcpkg.git
|
|
> cd vcpkg
|
|
> .\bootstrap-vcpkg.bat
|
|
> .\vcpkg integrate install
|
|
> .\vcpkg install liblzma
|
|
@endcode
|
|
|
|
Afterwards, liblzma headers and libraries (in DLL form) will be available to
|
|
all C++ Visual Studio projects, including wxWidgets, so you just need to build
|
|
it as usual, i.e. by opening @c build/msw/wx_vcXX.sln file and building it.
|
|
|
|
|
|
@section page_build_liblzma_msw_manual MSW manual setup
|
|
|
|
First of all, you need to either build or download liblzma binaries. Building
|
|
the library from source with gcc requires configure, and as you don't use an
|
|
environment capable of running it (if you're, you're reading the wrong section
|
|
of this guide, please go to the first one instead), it might be simpler to just
|
|
download the binaries from https://tukaani.org/xz/
|
|
|
|
However these binaries don't provide import libraries for MSVC, so you may
|
|
prefer building from source when using this compiler, provided it is at least
|
|
2013.2 or later (otherwise, you must use the binaries and create the import
|
|
library from the DLL). To do it, simply open the MSVS solution provided under
|
|
@c windows directory of the source archive corresponding to your compiler
|
|
version and build all the relevant configurations. Notice that you may build it
|
|
as either a static or a dynamic library, but if you choose the former, you must
|
|
also predefine @c LZMA_API_STATIC when building wxWidgets.
|
|
|
|
|
|
Second, you need to let wxWidgets build system know about the liblzma headers
|
|
and libraries location. When using makefiles, with either gcc or MSVC compiler,
|
|
this can be done simply by specifying @c CPPFLAGS and @c LDFLAGS on make
|
|
command line, e.g.
|
|
|
|
@code
|
|
> make -f makefile.gcc CPPFLAGS=-Ic:/dev/include LDFLAGS=-Lc:/dev/lib
|
|
@endcode
|
|
|
|
If you built liblzma as a static library, change @c CPPFLAGS to also include @c
|
|
-DLZMA_API_STATIC.
|
|
|
|
|
|
When building wxWidgets with MSVC project files, you must update them to use
|
|
liblzma. For this, start by copying build\\msw\\wx_setup.props file to
|
|
build\\msw\\wx_local.props, if you don't have the latter file yet. Then open
|
|
this file in your favourite editor and locate the @c Link tag inside an @c
|
|
ItemDefinitionGroup tag and add a new @c AdditionalIncludeDirectories line
|
|
inside the @c ClCompile tag as well as add @c liblzma.lib to the @c
|
|
AdditionalDependencies tag under @c Link itself. The result should look like
|
|
the following, assuming liblzma sources are in c:\\src\\liblzma:
|
|
|
|
@code
|
|
<ItemDefinitionGroup>
|
|
<ClCompile>
|
|
... any existing lines here ...
|
|
<AdditionalIncludeDirectories>c:\src\liblzma\src\liblzma\api;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
|
<!--
|
|
Uncomment this line if, and only if, you link with liblzma statically.
|
|
<PreprocessorDefinitions>LZMA_API_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
|
-->
|
|
</ClCompile>
|
|
<Link>
|
|
<AdditionalDependencies>... all the previously listed libraries;c:\src\liblzma\windows\vs2017\$(Configuration)\$(Platform)\liblzma_dll\liblzma.lib;%(AdditionalDependencies)</AdditionalDependencies>
|
|
</Link>
|
|
</ItemDefinitionGroup>
|
|
@endcode
|
|
|
|
Afterwards, build wxWidgets as usual and don't forget to provide @c liblzma.dll
|
|
when distributing your application unless you have decided to link it
|
|
statically.
|
|
*/
|