+The pkg-config utility is required for configuration, it can be downloaded
+from <http://pkg-config.freedesktop.org/>. Also Python version >= 2.6 is
+required.
+
+To build the GiNaC tutorial and reference manual the doxygen utility
+(it can be downloaded from http://www.stack.nl/~dimitri/doxygen) and
+TeX are necessary.
+
+Known to work with:
+ - Linux on x86 and x86_64 using
+ - GCC 4.8, 4.9, 5.1, 5.2, 5.3, and 6.1
+ - Clang 3.5, 3.6, 3.7, 3.8
+
+Known not to work with:
+ - Clang 2.7 and earlier due to poor C++ support.
+ - GCC < 4.6.0 due to missing C++-11 support
+
+If you install from git, you also need GNU autoconf (>=2.59), automake (>=1.8),
+libtool (>= 1.5), python (>= 2.5), bison (>= 2.3), flex (>= 2.5.33) to be installed.
+