--- gforth/INSTALL 2007/12/31 17:34:58 1.38 +++ gforth/INSTALL 2008/10/13 20:20:56 1.40 @@ -7,8 +7,8 @@ unlimited permission to copy, distribute You need gcc version 2.0 or later to compile gforth. -For the (documented) libcc.fs C interface you need a C compiler at -run-time. +For the (documented) libcc.fs C interface you need a C compiler and +libtool at run-time. For the (undocumented ) lib.fs C interface you need to install either the ffcall libraries or the libffi library. Libffi comes with recent @@ -33,7 +33,8 @@ After configuration, type make -Now you can check whether your shiny new Forth system works. Say +This includes a check whether your shiny new Forth system works. If +you like to invoke the check alone, do make check @@ -87,14 +88,10 @@ configure has the following useful param [default: /usr/local] --exec-prefix=PREFIX install architecture-dependent files in PREFIX [default: same as prefix] - --enable-force-reg Use explicit register declarations if they appear in - the machine.h file. This can cause a good speedup, - but also incorrect code with some gcc versions on - some processors (default disabled). --help: tells you about other parameters. -The file Benchres shows which combination of the -enable options we -tried gave the best results for various machines. +The file Benchres shows the best gforth-fast performance that we +achieved. If you don't like the defaults for the installation directories, you should override them already during configure. E.g., if you want to @@ -117,7 +114,7 @@ You can change the sizes of the various image `gforth.fi' by passing the appropriate Gforth command line options in the FORTHSIZES environment variable: -./configure "FORTHSIZES=--dictionary-size=256k --data-stack-size=16k --fp-stack-size=15872b --return-stack-size=15k --locals-stack-size=14848b" +./configure "FORTHSIZES=--dictionary-size=1048576 --data-stack-size=16k --fp-stack-size=16K --return-stack-size=15k --locals-stack-size=14848b" The line above reaffirms the default sizes. Note that the locals stack area is also used as input buffer stack. @@ -128,9 +125,24 @@ that it does not use "long long": ./configure ac_cv_sizeof_long_long=0 +For MacOS X on Core 2 processors, you might want to use the 64-bit +version for increased speed (more registers available); you have to +ask for that on configuration, as follows: + +./configure CC='gcc-4.2 -arch x86_64' --build=x86_64-apple-darwin9.4.0 + Cross-Installation +There is currently no simple way to do cross-installation of Gforth +(apart from Gforth EC). The current build process interleaves +compiling and running heavily, so multiple transfers between build and +target machine would be required. We don't have a testing environment +for cross-compilation, so we cannot fix this at the moment. If you +want to do cross-installation, please contact us. + +In any case, you might find the following useful: + You need a cross-compilation toolchain for your target including gcc (2.0 or later). @@ -139,9 +151,10 @@ few tests made by the configure script d cross-compilation situation. You have to provide the results of these tests by hand. E.g., if you compile for an ARM: -env skipcode=".skip 16" ac_cv_sizeof_char_p=4 ac_cv_sizeof_char=1 \ -ac_cv_sizeof_short=2 ac_cv_sizeof_int=4 ac_cv_sizeof_long=4 \ -ac_cv_sizeof_long_long=8 ac_cv_sizeof_intptr_t=4 ac_cv_sizeof_int128_t=0 \ +env skipcode=".skip 16" ac_cv_sizeof_char_p=4 ac_cv_sizeof_void_p=4 \ +ac_cv_sizeof_char=1 ac_cv_sizeof_short=2 ac_cv_sizeof_int=4 \ +ac_cv_sizeof_long=4 ac_cv_sizeof_long_long=8 ac_cv_sizeof_intptr_t=4 \ +ac_cv_sizeof_int128_t=0 ac_cv_sizeof_uint128_t=0 \ ac_cv_c_bigendian=no ./configure CC=arm-elf-gcc --host=arm-linux The ac_cv_sizeof_... variables give the sizes of various C types; @@ -150,36 +163,6 @@ ac_cv_c_bigendian variable gives the byt specifies how to skip 16 bytes in the code (use "skipcode=no" to disable skipping and dynamic native code generation). -After the cross-configuration you type - -make gforths - -This produces the gforth engines for the target. - -The next step is to transfer everything to the target; on the target, -you do - -make - -to complete building gforth. If you do not have a make on the target, -run - -make -n - -on the host; manually execute on the target the last command output by -"make -n" (GFORTHD=...); the other commands output by "make -n" are -not necessary unless you have changed the Gforth sources. You can -then check and benchmark Gforth with - -make check -make bench - -or equivalent. Finally, perform - -make install - -or the equivalent commands on the target. - Preloading installation-specific code