51 lines
1.5 KiB
Markdown
51 lines
1.5 KiB
Markdown
The `external/` directory contains external libraries which are either difficult to obtain, difficult to compile or patched for libigl.
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## AntTweakBar
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Patched to support copying and pasting from text fields (see http://www.alecjacobson.com/weblog/?p=2378)
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Added makefiles for Mac OS X with modern GCC (AntTweakBar/src/Makefile.osx.igl) and for building with Mesa (AntTweakBar/src/Makefile.mesa.igl)
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## Embree
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Install `ispc` and `tbb` for example (`brew install ispc tbb`), then
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```bash
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mkdir build
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cd build
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cmake -DCMAKE_C_COMPILER=/usr/bin/gcc -DCMAKE_CXX_COMPILER=/usr/bin/g++ -DCMAKE_BUILD_TYPE=Release ..
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make
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```
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## TinyXML2
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double precision bug fixes:
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tinyxml2.h line 1286 add function:
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```cpp
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void SetAttribute( const char* name, float value ) {
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XMLAttribute* a = FindOrCreateAttribute( name );
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a->SetAttribute( value );
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}
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```
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tinyxml2.cpp line 434 replace with:
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```cpp
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TIXML_SNPRINTF( buffer, bufferSize, "%.15e", v );
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```
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## CGAL
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CGAL can be built as a CMake external project thanks to the `CMakeLists.txt` provided in this folder. While this is mainly intended as a convenience for Windows users, and CI builds on AppVeyor, this should work on Linux/macOS as well. To build CGAL and Boost with the provided CMake script, build this folder as you would compile any CMake project (use CMake GUI and MSVC on Windows):
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```bash
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mkdir build
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cd build
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cmake ..
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make -j4
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```
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Once this is done, just build the libigl tutorials, and it should properly detect CGAL and Boost.
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