Bootstrapping steps:

1. Modify env.sh to accept the uname output.
2. Modify header.kmk to accept and correctly configure the platform / target OS.
3. Run kBuild/env.sh to configure the kBuild environment.
4. Copy unix like tools from you system to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/. kBuild requires all ash (bash is recommended), cat, cp, echo, install, ln, mkdir, mv, rm, rmdir and (gnu) sed. The kBuild copies must be prefixed with kmk_. These tools will be replaced later in the bootstrapping.
5. Configure and build GNU sed:
   1. Go to the src/sed directory.
   2. Run aclocal, autoconf and automake in src/sed if needed.
   3. Create and enter src/sed/obj.
   4. Run ../configure --disable-nls.
   5. Run make
   6. Copy config.h to src/sed/config.h.$BUILD_TARGET (or similar, see Makefile.kmk).
   7. Copy sed/sed[.exe] to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/kmk_sed[.exe].
6. Configure and build plain GNU Make:
   1. Run aclocal, autoconf and automake in src/gmake if needed.
   2. Create and enter src/gmake/obj.
   3. Run ../configure --disable-nls.
   4. Run make
   5. Copy config.h to src/gmake/config.h.$BUILD_TARGET (or similar, see Makefile.kmk). Append empty string #defines for LOCALEDIR, LIBDIR, INCLUDEDIR and ALIASPATH (see config.h.linux).
   6. We've now got our own make binary which will be used further down.
7. Build src/gmake using the GNU Make we just made:
   1. Go to the src/gmake directory.
   2. obj/make -f Makefile.kmk
   3. When it breaks fix the compiler / linker error and redo the previous step.
   4. Copy out/$BUILD_TARGET.$BUILD_TARGET_ARCH/release/kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/ to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/.
8. Rebuild everything using kmk (which should now be in the path):
   1. Run kBuild/env.sh (or continue in the shell from the previous step).
   2. Go to the root.
   3. kmk BUILD_TYPE=release rebuild
   4. Fix build breaks and repeat the previous step.
   5. Copy out/$BUILD_TARGET.$BUILD_TARGET_ARCH/release/kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/ to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/.
9. Add and commit the changes (including the binaries).

Note! On GNU/Linux make sure you have a real yacc install. GNU bison is not sufficiently compatible with yacc to make src/ash (from NetBSD) happy.

New Bootstrapping Steps (src/gmakenew)

1. Modify env.sh to accept the uname output. A kBuild BUILD_TARGET / BUILD_PLATFORM OS name must be decided upon at this point. If the architecture and/or processor is new to kBuild, new (unique) names need to be found here as well.
2. Modify header.kmk to accept and correctly configure the platform / target OS.
3. Run kBuild/env.sh to configure the kBuild environment.
4. Port and bootstrap kmk. The bootstrap kmk build is made using the GNU automake/autoconf setup of GNU make. Which means that the initial port of the kmk code has to be done in that environment. Since porting isn't a common day thing, nor is bootstrapping this is just something we have to live with.
   1. The source is derived from the GNU make CVS and not a GNU make tarball. This means all the auto-stuff has to be created first. Run this from the src/gmake directory:

      autoreconf -i
      

      For solving problems check out the autoreconf manual page and README.cvs.
   2. Create a subdirectory obj for to do the build within. This avoids confusion later and simplifies cleanup. Enter the directory.
   3. Run configure:

      ../configure
      

   4. Build it:

      make
      

      Don't expect it to build on the first try on a new platform. Fix build errors and repeat until success or you give up in frustration...
   5. Copy (or symlink) the resulting kmk to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/. You may have to create this directory first.
   6. The kmk bootstrapping is now done (unless of course, bugs in the port needs addressing).
5. Copy or symlink a bournshell compatible shell (ash is preferred) to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/kmk_ash. /bin/sh or /bin/bash

is usually a good choice.

1. Configure/Port and build the kmk, ash, sed, and kDep* (all found in source) using the bootstrap kmk. It's recommended to take one directory at a time and start with kmk since that's almost done now. The job that's required for each directory is roughly this:
   1. Check if anything special is required in Makefile.kmk for your OS.
   2. If it's a autoconf based tool run configure to (re)generate the config.h for your OS. These are usually cached as config.h.$(BUILD_TARGET) files. Note. You might wish to check if it builds and checks out cleanly in the autoconf/automake framework. Applies to sed and kmk/gmake.
   3. Try build:

      kmk
      

      Address build errors (and warnings) until it builds successfully.
   4. If it's a autoconf/automake based tool and it got a testharness/suite, it is recommended to test the binary you've just built in it. Applies to sed and to some degree kmk/gmake.
   5. Copy the resulting binary/binaries to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/.
   6. Move on to the next tool.
2. When everything builds and you've copied the new binaries to the kBuild/bin/x.y location, it's time to rebuild everything using the new binaries.
   1. Remove the out/ directory found in the root of the kBuild tree.
   2. Run kmk from the root.
   3. Replace binaries in kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/ with the new ones from out/$BUILD_TARGET.$BUILD_TARGET_ARCH/$BUILD_TYPE/kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/.
   4. It doesn't hurt to repeat this sequence once more.
3. Create patches and submit to bird along with a release build of the tools binaries.

Trouble Shooting

• On Solaris cp doesn't like being called kmk_cp. So, when building src/gmake for the first time, it might be necessary to add CP=/bin/cp to the make command line.
• The sed and GNU make configure scripts might not like the system sed. Try find a GNU sed binary or bootstrap it yourself. Copy you sed program to kBuild/bin/$BUILD_TARGET.$BUILD_TARGET_ARCH/ (without any prefix) and it'll be used instead of the system sed.
• Use a real YACC when compiling ash. GNU bison will not work (yyerrstatus undeclared error). You can add YACC=/path/to/real/yacc to the kmk command line if it's not in the PATH.