[C++20] Clean up using-declarations.

[ginac.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index bfa4bdd97c9f14a45d0ca35fde0667eb9a748beb..3a0dc2bb3fc3e8b59a3411dda3d54e5b82b93c34 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -2,42 +2,38 @@ 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 <https://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 3 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, 4.2, 4.3.x (x >= 1), 4.4, 4.5, and 4.6
-   - Clang 2.8
- - Windows on x86 using GCC 3.4 (MinGW)
+ - Linux on x86 and x86_64 using
+   - GCC 4.8, 4.9, 5.x, 6.x, 7.x, 8.x, and 9.x
+   - Clang 3.5, 3.6, 3.7, 3.8, 6.x, 7.x, 8.x, and 9.x

 
 Known not to work with:
  - Clang 2.7 and earlier due to poor C++ support.
 
 Known not to work with:
  - Clang 2.7 and earlier due to poor C++ support.

- - 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.
+ - 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),
 
 If you install from git, you also need GNU autoconf (>=2.59), automake (>=1.8),

-libtool (>= 1.5), bison (>= 2.3), flex (>= 2.5.33) to be installed.
+libtool (>= 1.5), python3, bison (>= 2.3), flex (>= 2.5.33) to be installed.

 
 
 INSTALLATION
 ============
 
 
 
 INSTALLATION
 ============
 

-To install from a source .tar.bz2 distribution:
+To install from an unpacked source .tar.bz2 distribution:

 
  $ ./configure
  $ make
 
  $ ./configure
  $ make


@@ -74,16 +70,11 @@ 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 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   |
---------------+---------+---------+----------------------------------------
-make          |   ~1m   |   ~2m   | shared library only (--disable-static),
-              |         |         | parallel compilation (MAKEFLAGS=-j2)
-make check    |   ~6m   |   ~6m   | largely due to compilation
+The time to build the library depends to a large degree on optimization levels.
+Using the default high optimization, 'make' takes a few minutes on a fast
+machine and 'make check' takes some more minutes. You can speed this up with a
+parallel build with 'make -j2' or higher, depending on the number of available
+CPU cores.

 
 
 To install from git 
 
 
 To install from git 


@@ -96,7 +87,7 @@ First, download the code:
 Secondly, make sure all required software is installed. This is *really*
 important step. If some package is missing, the `configure' script might
 be misgenerated, see e.g. this discussion:
 Secondly, make sure all required software is installed. This is *really*
 important step. If some package is missing, the `configure' script might
 be misgenerated, see e.g. this discussion:

-<http://www.ginac.de/pipermail/ginac-list/2007-November/001263.html>
+<https://www.ginac.de/pipermail/ginac-list/2007-November/001263.html>

 
 Finally, run
 
 
 Finally, run