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Diffstat (limited to 'bootstrap/bmake/README')
| -rw-r--r-- | bootstrap/bmake/README | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/bootstrap/bmake/README b/bootstrap/bmake/README deleted file mode 100644 index 005c3228e08..00000000000 --- a/bootstrap/bmake/README +++ /dev/null @@ -1,110 +0,0 @@ - bmake v3 - -This directory contains a port of the BSD make tool (from NetBSD) -I have run it on SunOS,Solaris,HP-UX 9 and IRIX. - -Version 3 is has been re-worked from scratch to better facilitate -importing newer make(1) versions from NetBSD. The original code base -was NetBSD-1.0, so version 3 was built by doing a fresh import of the -NetBSD-1.0 usr.bin/make, adding the autoconf and other portability -patches to sync it with bmake v2, and then NetBSD's make -of Feb 20, 2000 was imported and conflicts dealt with. -NetBSD's make was again imported on June 6 and December 15, 2000. - -Note: when cvs importing newer versions -it is important to (in usr.bin/make): - -mv config.h make-conf.h -mv Makefile Makefile.in - -before running cvs import. - -Building is simply a matter of: - -configure -make -f makefile.boot -make -f makefile.boot install -make -f makefile.boot install-man -make -f makefile.boot install-mk - -The install-mk target is only useful if you unpacked [bsd-]mk.tar.gz -under the bmake directory. - -if you have GNU make or a make which supports VPATH, you can build it -in a separate directory: - -here=`pwd` -mkdir /tmp/bmake -cd /tmp/bmake -$here/configure -gmake -f makefile.boot -gmake -f makefile.boot install -gmake -f makefile.boot install-man -gmake -f makefile.boot install-mk - -To make much use of bmake you will need the bsd.*.mk macros or my -portable *.mk macros. See -ftp://ftp.quick.com.au/pub/sjg/bsd-mk.tar.gz -ftp://ftp.quick.com.au/pub/sjg/mk.tar.gz - -If you have an earlier version of bmake installed you can use that -with the generated Makefile. - -Apart from new features such as .PARSEDIR picked up from the recent -NetBSD make, this version has improvments (which are also in NetBSD's -make or soon will be) to facilitate using MAKEOBJDIRPREFIX to support -true read-only src trees. See also ChangeLog. - -MAKEOBJDIRPREFIX: - -When MAKEOBJDIRPREFIX is set in the environment make(1) will attempt -to chdir(${MAKEOBJDIRPREFIX}${.CUDRIR}) and use that as its objdir. -Because the directory tree under ${MAKEOBJDIRPREFIX} is a mirror of -the src tree, make ends up chdir'ing to objdirs that would not exist -otherwise. That is, when using normal ./obj dirs (or symlinks) only -Makefiles which include obj.mk get a separate objdir. When using -MAKEOBJDIRPREFIX any directory which has subdirs that use obj.mk will -have an objdir, thus Makefiles which were written expecting to process -in ${.CURDIR} may break. In particular, Makefiles which do: - -build: - ${.MAKE} something - ${.MAKE} else - -will break as the sub-make will not find a Makefile in -${MAKEOBJDIRPREFIX}${.CUDRIR}. Whereas - -build: - cd ${.CURDIR} && ${.MAKE} something - cd ${.CURDIR} && ${.MAKE} else - -will work fine. To avoid the need to re-work these Makefiles we -check for running ${.MAKE} or ${.MAKE:T} without a preceeding cd and -effectively insert one. This feature only operates if -MAKEOBJDIRPREFIX (or MAKEOBJDIR) is set and can be dissabled by -defining NOCHECKMAKECHDIR. - -Another problem arrises from make(1) overriding the physical location -returned by getcwd() with the logical one from $PWD. We dissable this -feature if MAKEOBJDIRPREFIX is set to avoid the situation where -make(1) behaves differently depending on how it got to a directory. -This avoids lossage like the following example. - -If /usr/local/src is a symlink to /d3/src: - -cd /usr/local/src/project -MAKEOBJDIRPREFIX=/tmp/obj make obj -===> sub1 -/d3/src/project/sub1 -> /tmp/obj/d3/src/project/sub1 -... - -cd /usr/local/src/project/sub1 -MAKEOBJDIRPREFIX=/tmp/obj make obj -/usr/local/src/project/sub1 -> /tmp/obj/usr/local/src/project/sub1 - -the expected objdir changes depending on circumstances - which -means that 9 times out of 10 you'll end up trying to polute -curdir because the objdir you expected does not exist. - - ---sjg |