Add a few features to crunchgen to simplify the use of existing

makefiles (for use with picobsd among other things).
See the manpage for details, but:

  * -h makefile-include-name
        can be used to specify a file to include in the makefiles
        generated by crunchgen . This is a good place to specify make
        variables such as RELEASE_CRUNCH, NOTHIS, NOTHAT and the like.

  * special progname objvar variable_name
        in the crunch config file declares a different variable than
        OBJS to be used to get the list of objects.

  * crunchgen now looks first for Makefile.<progname> in the current
    directory to override the makefile in <progname> source dir.
    This in many cases avoids the need to patch the original makefile
    if the above two features are still not enough.

Approved-By: jordan

1 files changed, 18 insertions, 0 deletions

diff --git a/usr.sbin/crunch/crunchgen/crunchgen.1 b/usr.sbin/crunch/crunchgen/crunchgen.1
index f01ee2a..0aec659 100644
--- a/usr.sbin/crunch/crunchgen/crunchgen.1
+++ b/usr.sbin/crunch/crunchgen/crunchgen.1
@@ -33,6 +33,7 @@
 .Sh SYNOPSIS
 .Nm \&crunchgen
 .Op Fl fql
+.Op Fl h Ar makefile-header-name
 .Op Fl m Ar makefile-name
 .Op Fl c Ar c-file-name
 .Op Fl e Ar exec-file-name
@@ -89,6 +90,14 @@ The default name is ``<conf-name>''.
 Flush cache.  Forces the recalculation of cached parameters.
 .It Fl l
 List names.  Lists the names this binary will respond to.
+.It Fl h Ar makefile-header-name
+Set the name of a file to be included at the beginning of the
+Makefiles generated by
+.Nm crunchgen .
+This is useful to define some make variables such as
+.Ar RELEASE_CRUNCH
+or similar, which might affect the behaviour of make and
+are annoying to pass through environment variables.
 .It Fl m Ar makefile-name
 Set output Makefile name to
 .Ar makefile-name .
@@ -179,6 +188,15 @@ This is normally calculated by prepending the
 pathname to each file in the
 .Nm objs
 list.
+.It Nm special Ar progname Nm objvar Ar variable_name
+Sets the name of the Make variable which holds the list of
+object files for program
+.Ar progname .
+This is normally
+.Nm OBJS
+but some Makefiles might like to use other conventions or
+prepend the program's name to the variable, e.g.
+.Nm SSHD_OBJS .
 .It Nm special Ar progname Nm keep Ar symbol-name ...
 Add specified list of symbols to the keep list for program
 .Ar progname .