Changes between Version 3 and Version 4 of Installation Notes

Timestamp:

Jan 17, 2008, 11:01:48 AM (16 years ago)

Author:

Nicolas Pouillon

Comment:

Toolchain overrides

Installation Notes

@@ -38 +38 @@
 == Configuration ==
 
+=== SystemC ===
+
 You may edit [SoclibConf SoCLib's configuration file]. Out of the box, the only thing the configuration
 needs is setting an environment variable pointing to your SystemC implementation. Again
@@ -51 +53 @@
 COPYING  INSTALL    NEWS     RELEASENOTES  examples  lib-linux
 }}}
+
+=== Cross-compilation tools ===
+
+By default, platform examples expect cross-toolchains compiled as described in CrossCompiler.
+I.e. it expects `mipsel-unknown-elf-gcc`, `powerpc-unknown-elf-gcc` and `mb-gcc` (Xilinx ships a Microblaze compiler named it this way).
+
+If you already have cross-toolchains compiled on your host, you can declare them in `~/.soclib/soft_compilers.conf`.
+For each architecture in `mipsel`, `powerpc` and `microblaze`, you may define:
+{{{
+<arch>_CC_PREFIX = ...
+<arch>_CFLAGS = ...
+<arch>_LDFLAGS = ...
+}}}
+
+For instance, if you want to use a mips cross-compiler configured for Linux (GNU+Glibc), you can declare:
+{{{
+mipsel_CC_PREFIX = mipsel-linux-elf-
+mipsel_CFLAGS = -nostdinc
+mipsel_LDFLAGS = -nostdlib
+}}}
+`nostdinc` and `nostdlib` disable default libraries (Glibc) from compilation and linking.
 
 == Other paths ==