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-
-SGX Embedded Systems DDK for the Linux kernel.
-Copyright (C) Imagination Technologies Ltd. All rights reserved.
-======================================================================
-
-This file covers how to build and install the Imagination Technologies
-SGX DDK for the Linux kernel.
-
-
-Build System Environment Variables
--------------------------------------------
-
-The SGX DDK Build scripts depend on a number of environment variables
-being setup before compilation or installation of DDK software can
-commence:
-
-$DISCIMAGE
-The DDK Build scripts install files to the location specified by the
-DISCIMAGE environment variable, when the make install target is used.
-This should point to the target filesystem.
-$ export DISCIMAGE=/path/to/filesystem
-
-$KERNELDIR
-When building the SGX DDK kernel module, the build needs access
-to the headers of the Linux kernel
-$ export KERNELDIR=/path/to/kernel
-
-$PATH
-If a cross compiler is being used make sure the PATH environment variable
-includes the path to the toolchain
-$ export PATH=$PATH:/path/to/toolchain
-
-$CROSS_COMPILE
-Since the SGX DDK Build scripts are geared toward a cross-compilation
-workflow, the CROSS_COMPILE environment variable needs to be set
-$ export CROSS_COMPILE=toolchain-prefix-
-
-
-Build and Install Instructions
--------------------------------------------
-
-The SGX DDK configures different target builds within directories under
-eurasiacon/build/linux/.
-
-The supported build targets are:
-
- all Makes everything
- clean Removes all intermediate files created by a build.
- clobber Removes all binaries for all builds as well.
- install Runs the install script generated by the build.
-
-The following variables may be set on the command line to influence a build.
-
- BUILD The type of build being performed.
- Alternatives are release, timing or debug.
- CFLAGS Build dependent optimisations and debug information flags.
- SILENT Determines whether text of commands is produced during build.
-
-To build for, change to the appropriate target directory, e.g.:
-$ cd eurasiacon/build/linux/platform/kbuild
-
-Issue the make command:
-$ make BUILD=debug all
-
-The DDK software must be installed by the root user. Become the root user:
-$ su
-
-Install the DDK software:
-$ make install
-
-Become an ordinary user again:
-$ exit