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# Bundled X11 Headers
This directory contains bundled X11 headers for building FLTK without
system X11 development packages installed.
## Required Sources
Download from freedesktop.org:
1. **xorgproto** - X11 protocol headers
https://gitlab.freedesktop.org/xorg/proto/xorgproto
2. **libX11** - Core X11 library headers
https://gitlab.freedesktop.org/xorg/lib/libx11
3. **libXext** - X11 extension headers
https://gitlab.freedesktop.org/xorg/lib/libxext
4. **libXrender** - Render extension
https://gitlab.freedesktop.org/xorg/lib/libxrender
5. **libXinerama** - Xinerama extension
https://gitlab.freedesktop.org/xorg/lib/libxinerama
6. **libXfixes** - Xfixes extension
https://gitlab.freedesktop.org/xorg/lib/libxfixes
7. **libXcursor** - Cursor library
https://gitlab.freedesktop.org/xorg/lib/libxcursor
## Directory Structure
```
xlibs/
include/
X11/
Xlib.h
X.h
Xutil.h
Xatom.h
...
extensions/
Xinerama.h
Xfixes.h
Xrender.h
Xcursor/
Xcursor.h
Xft/
Xft.h (system dependency - requires fontconfig/freetype)
```
## Note on Xft
Xft is NOT bundled because it depends on:
- FreeType2
- FontConfig
- Cairo (optional)
These remain as system dependencies.
## Build Usage
Add `-I./xlibs/include` to CXXFLAGS when X11 dev headers are not installed.
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