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OPNsense - FreeBSD source
from the .MAKEFLAGS global variable even if it's empty or unset. This means setting MAKEFLAGS to just an empty string in the latter case. If not doing so, make(1) behaved inconsistently WRT MAKEFLAGS. In particular, it would let a `-f foo' option down to sub-makes if .MAKEFLAGS was unset. E.g., env MAKEFLAGS="-f mymakefile" make would pass `-f mymakefile' down to sub-makes via their environment (unless mymakefile added something to .MAKEFLAGS). But any additional options appearing would change this behaviour to not passing `-f mymakefile' to sub-makes, as in: env MAKEFLAGS="-f mymakefile" make -D DUMMY or env MAKEFLAGS="-f mymakefile -D DUMMY" make (unless mymakefile cleared .MAKEFLAGS). Also make(1) would leave MAKEFLAGS at its initial value if the makefile set .MAKEFLAGS to an empty value. I.e., it was impossible to override MAKEFLAGS with an empty value. (Note well that makefiles are not to touch MAKEFLAGS directly, they alter .MAKEFLAGS instead. So make(1) can filter out things such as -f when copying MAKEFLAGS to .MAKEFLAGS at startup. Direct modifications to MAKEFLAGS just go nowhere.) While the original intentions of the BSD make authors are somewhat unclear here, the bug proves that NOT passing -f options down is the settled behaviour because the opposite behaviour is totally unreliable in the presence of any other options. In addition, not passing down -f's found in the environment is consistent with doing so WRT the command line. Update the manpage accordingly and make the whole description of MAKEFLAGS and .MAKEFLAGS more consistent as this change indeed brings more consistency into the reliable behaviour of make(1). Submitted by: ru (main.c) Tested with: make world |
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| bin | ||
| cddl | ||
| compat/opensolaris | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| ObsoleteFiles.inc | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``world'' target should only be used in cases where the source tree has not changed from the currently running version. See: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. rescue Build system for statically linked /rescue utilities. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html