speed up multiply_lcm(e, lcm) a bit

[ginac.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index 1cad2773e5a3ec6ec9aeb4008b1cd94e396b891f..2e541d5a75ba4d2d602206bd58f71280e05d3b00 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -2,36 +2,33 @@ PREREQUISITES
 =============
 
 GiNaC requires the CLN library by Bruno Haible installed on your system.
 =============
 
 GiNaC requires the CLN library by Bruno Haible installed on your system.

-It is available from <ftp://ftpthep.physik.uni-mainz.de/pub/gnu/>.
+It is available from <http://www.ginac.de/CLN/>.

 
 

-You will also need a decent ANSI-compliant C++-compiler. We recommend the
-C++ compiler from the GNU compiler collection, GCC >= 3.4. If you have a
+You will also need a decent ISO C++-11 compiler. We recommend the C++
+compiler from the GNU compiler collection, GCC >= 4.8. If you have a

 different or older compiler you are on your own. Note that you may have to
 use the same compiler you compiled CLN with because of differing
 name-mangling schemes.
 
 The pkg-config utility is required for configuration, it can be downloaded
 different or older compiler you are on your own. Note that you may have to
 use the same compiler you compiled CLN with because of differing
 name-mangling schemes.
 
 The pkg-config utility is required for configuration, it can be downloaded

-from <http://pkg-config.freedesktop.org/>.
+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:
 
 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 3.4, 4.0, 4.1, and 4.2.
- - Linux on Alpha using GCC 3.4.
- - Solaris on Sparc using GCC 3.4.
- - Windows on x86 using GCC 3.4 (MinGW)
+ - Linux on x86 and x86_64 using 
+   - GCC 4.8, 4.9, 5.1, 5.2, and 5.3
+   - Clang 3.5.0

 
 Known not to work with:
 
 Known not to work with:

- - GCC 4.3.0 due to the compiler bug,
-   see <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35548>.
- - GCC 2.96 or earlier because proper exception and standard library support
-   is missing there.
+ - Clang 2.7 and earlier due to poor C++ support.
+ - GCC < 4.6.0 due to missing C++-11 support

 
 

-If you install from CVS, you also need GNU autoconf (>=2.59), automake (>=1.7),
-libtool (>= 1.5), bison (>= 2.3), flex (>= 2.5.33), autogen (>= 5.6.0) to be
-installed.
+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.

 
 
 INSTALLATION
 
 
 INSTALLATION


@@ -74,28 +71,24 @@ A few of the more important ones:
 More detailed installation instructions can be found in the documentation,
 in the doc/ directory.
 
 More detailed installation instructions can be found in the documentation,
 in the doc/ directory.
 

-The time the "make" step takes depends heavily on optimization levels. Large
-amounts of memory (>128MB) will be required by the compiler, also depending
-on optimization. To give you a rough idea of what you have to expect the
-following table may be helpful. It was measured on an Athlon/800MHz with
-"enough" memory:
+The time the "make" step takes depends on optimization levels. To give you
+a rough idea of what you have to expect the following table may be helpful.
+It was measured on an Athlon X2/3GHz with 4Gb of RAM.

 
 step          | GCC optimization  | comment
               |   -O1   |   -O2   |
 --------------+---------+---------+----------------------------------------
 
 step          | GCC optimization  | comment
               |   -O1   |   -O2   |
 --------------+---------+---------+----------------------------------------

-make          |   ~6m   |   ~8m   | shared and static library
-make check    |   ~8m   |  ~12m   | largely due to compilation
+make          |   ~1m   |   ~2m   | shared library only (--disable-static),
+              |         |         | parallel compilation (MAKEFLAGS=-j2)
+make check    |   ~6m   |   ~6m   | largely due to compilation

 
 
 
 

-To install from CVS
+To install from git 

 ===================
 
 First, download the code:
 ===================
 
 First, download the code:

-
- $ cvs -d :pserver:anoncvs@cvs.ginac.de:/home/cvs/GiNaC login
- [enter "anoncvs" as the password]
- $ cvs -d :pserver:anoncvs@cvs.ginac.de:/home/cvs/GiNaC co GiNaC
- $ cd GiNaC
+ $ git clone git://www.ginac.de/ginac.git ginac
+ $ cd ginac

 
 Secondly, make sure all required software is installed. This is *really*
 important step. If some package is missing, the `configure' script might
 
 Secondly, make sure all required software is installed. This is *really*
 important step. If some package is missing, the `configure' script might


@@ -119,7 +112,7 @@ COMMON PROBLEMS
 Problems with CLN
 -----------------
 
 Problems with CLN
 -----------------
 

-You should use at least CLN-1.1, since during the development of GiNaC
+You should use at least CLN-1.2.2, since during the development of GiNaC

 various bugs have been discovered and fixed in earlier versions. Please
 install CLN properly on your system before continuing with GiNaC.
 
 various bugs have been discovered and fixed in earlier versions. Please
 install CLN properly on your system before continuing with GiNaC.