DOS

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Compilation

To cross-compile on Linux for DOS:

  1. Get packages of the DJGPP cross compiler and install them:
    • djgpp-filesystemdjgpp-gcc
    • djgpp-cpp
    • djgpp-runtime
    • djgpp-binutils
    As an alternative, the DJGPP web site offers packages for download as well:
    • djcross-binutils-2.29.1-1ap.x86_64.rpm
    • djcross-gcc-7.2.0-1ap.x86_64.rpm
    • djcrx-2.05-5.x86_64.rpm
    The cross toolchain packages for your distribution may have slightly different names (look for packages named djgpp).
    Alternatively, you could use a script to build it from scratch: https://github.com/andrewwutw/build-djgpp
  2. You will need the libpci and libgetopt library source trees and their compiled static libraries and header files installed in some directory say libpci-libgetopt/, which will be later specified with LIBS_BASE parameter during flashrom compilation. Easiest way to handle it is to put pciutils, libgetopt and flashrom directories in one subdirectory. There will be an extra subdirectory libpci-libgetopt created, which will contain compiled libpci and libgetopt.
  3. Download pciutils 3.5.6 and apply File:Pciutils-3.5.6.patch.gz
  4. Compile pciutils, using following command line:
    make ZLIB=no DNS=no HOST=i386-djgpp-djgpp CROSS_COMPILE=i586-pc-msdosdjgpp- \
    PREFIX=/ DESTDIR=$PWD/../libpci-libgetopt \
    STRIP="--strip-program=i586-pc-msdosdjgpp-strip -s" install install-lib
  5. Download and compile with 'make' File:Libgetopt.tar.gz
  6. Copy the libgetopt.a to ../libpci-libgetopt/lib and getopt.h to ../libpci-libgetopt/include
  7. Enter the flashrom directory.
    make CC=i586-pc-msdosdjgpp-gcc STRIP=i586-pc-msdosdjgpp-strip LIBS_BASE=../libpci-libgetopt/ strip
  8. If you like, you can compress the resulting executable with UPX:
    upx -9 flashrom.exe
  9. To run flashrom.exe, download File:Csdpmi7b.zip and unpack CWSDPMI.EXE into the current directory or one in PATH.