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LibreCAD is a 2D CAD drawing tool based on the community edition of QCad (www.qcad.org). LibreCAD has been re-structured and ported to qt4 and works natively cross platform between OSX, Windows and Linux.
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README.md

About LibreCAD

LibreCAD is a 2D CAD drawing tool based on the community edition of QCAD (http://www.qcad.org). LibreCAD has been re-structured, ported to new Qt versions and works natively cross platform between OS X, Windows and Linux. See LibreCAD Home.

User Manual and wiki

We are in the process of building a user manual and wiki:

wiki.librecad.org

OS X Users

If you use MacPorts, see below. If you use brew, or neither one, use this section.

Install Homebrew from http://brew.sh/.

gcc --version # you'll need gcc 4.4 or newer. If yours is older:
brew tap homebrew/versions
brew options gcc48
brew install [flags] gcc48
mkdir ~/bin
cd ~/bin
ln -s /usr/local/bin/gcc-4.8 gcc
ln -s /usr/local/bin/g++-4.8 g++
ln -s /usr/local/bin/gcc-ar-4.8 gcc-ar
ln -s /usr/local/bin/gcc-nm-4.8 gcc-nm
ln -s /usr/local/bin/gcc-ranlib-4.8 gcc-ranlib
```bash
source ~/.bashrc
```bash
gcc --version # make sure it's 4.8, as installed and configured in the previous step. if it's not, ~/bin might not be on your path
brew install boost qt

Unzip or checkout a version of LibreCAD into a directory.

cd LibreCAD
./scripts/build-osx.sh

This creates an executable "LibreCAD.app/Contents/MacOS/LibreCAD" and package "LibreCAD.dmg".

OS X with MacPorts Users

install MacPorts from http://www.macports.org/

You can install LibreCad using MacPorts by: $ sudo port install librecad

You can build LibreCAD manually by following steps:

Install QT and a new gcc, which should have a version 4.4 or later.

Install a version of Qt and boost, for example $ sudo port install gcc46 qt4-creator-mac qt4-mac boost

Select the right compiler, as LibreCAD doesn't build with the default llvm-gcc42, $ sudo port select --set gcc mp-gcc46

Unzip or checkout a version of LibreCAD into a directory.

cd LibreCAD
./scripts/build-osx.sh

This creates an executable "LibreCAD.app/Contents/MacOS/LibreCAD" and package "LibreCAD.dmg".

Users of Ubuntu/Debian and derivatives

Make sure you have the Qt version 4 development packages installed by running the following commands:

$ sudo apt-get install g++ gcc make git-core libqt4-dev qt4-qmake libqt4-help \
qt4-dev-tools libboost-all-dev libmuparser-dev libfreetype6-dev pkg-config

Alternatively, you make sure you have deb-src lines enabled in your sources.list file, and run,

$ sudo apt-get build-dep librecad

For SVN see also: http://www.librecad.org/2010/10/debian-64-bit-and-ubuntu-compile-how-to/

For git see also: http://librecad.org/cms/home/from-source/linux.html

LibreCAD builds with both Qt4 and Qt5. Note that you will most likely need to run qmake-qt4 or qmake-qt5 instead of just qmake.

Users of Red Hat and similar distibutions

Install Qt, Boost and muParser development packages for your respective distribution; EPEL and similar repositories may come handy if your base OS does not include the necessary packages.

As an example, for CentOS 6.4, after adding the EPEL repository,

yum groupinstall 'Desktop Platform Development' 'Development tools'
yum install qt-devel boost-devel muParser-devel

will install the necessary build dependencies.

Note that you will most likely need to run qmake-qt4 or qmake-qt5 instead of just qmake.

scripts/build-osx.sh bash building scripts are supplied. See OS/X by building scripts

FreeBSD users

See scripts/build-freebsd.sh for the list of ports that need to be installed.

Use the script itself to build LibreCAD.

Windows Users

Building steps are also given at our wiki page:

LibreCAD Installation from Source

A sample build batch file is included as scripts/build-windows.bat. If successful, this building script generates a Windows installer file using NSIS(http://nsis.sourceforge.net/Main_Page).

Start Qt Creator and load LibreCAD.pro, from the build menu select "Build All".

Windows Building from Command Line

scritps/build-windows.bat batch file for automatic building is supplied. Read Building Windows by command line for more details.

Generic Unix Users

Install necessary dependecy: Qt, boost, muParser (see http://wiki.librecad.org for details).

Unzip or checkout a version of LibreCAD into a directory LibreCAD.

cd LibreCAD
qmake -r librecad.pro
make

The executible is generated at unix/librecad

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