C-compiler (cc, gcc, egcs, ...)
GNU make is recommended
zlib compression library
libz:
flex
parser generator (yacc, bison)
libncurses4.x/5.x
X11 window system for graphical output, development libraries (X development libraries, in some linux distributions they are separate packages)

Optional requirements:
Tcl/Tk 8.x libraries (they include 'wish') to use TclTkGRASS Interface and to compile src.contrib/GMSL/NVIZ2.2/

Mesa-3.x (openGL clone) required for NVIZ2.2

FFTW 2.x (library for computing the Discrete Fourier Transform) required for i.fft and i.ifft modules


LAPACK / BLAS (libraries for numerical computing) required for GMATH library (GRASS numerical lib)


libpng;
libjpeg;
libtiff;
libgd (for PNG driver), preferably GD 2.x.

netpbm-tools/libraries
PostgreSQL libraries (for the PostgreSQL database interface)
Unix ODBC (for the ODBC database interface)
Only required for "xanim" and "ogl3d": the Motif or Lesstif libraries
r.in.gdal requires GDAL - Geospatial Data Abstraction Library
R language (for the R language interface)
FreeType2 (for d.text.freetype)