new build system

[Jason Zaugg]

Matt,

When I tried to 'make clean' from within a subdirectory
($CS_COMMON_DE/tools/property), gnu make dumped core. There is a bug in the
builtin 'if' function when trailing characters suffix the $(if cond,a,b)
construct. A test to reproduce the behaviour follows.

I've worked around it as follows:

@@ -36,12 +41,13 @@
 #
 define run-target-clean
 echo "cleaning `pwd` ... \c"
-find $(if $(1),$(1),.) \( -name ir.out -o -name core \
+DIR=$(1); \
+find $${DIR:-.} \( -name ir.out -o -name core \
           -o -name 'version.cc' \
                         -o -name '*.o' \
                         -o -name '*~' \) \
- -type f -exec rm -f {} \;
-find $(if $(1),$(1),.) -name $(CS_BUILD_CONFIG) -type d -exec rm -rf {} \;
+ -type f -exec rm -f {} \; ;\
+find $${DIR:=.} -name $(CS_BUILD_CONFIG) -type d -exec rm -rf {} \;
 echo "done\n"
 endef

... but there's probably a cleaner way.

Adios,

Jason


test.mk
-------

SHELL=/bin/ksh

dump_core:
    echo $(if ,true,false).

retain_core:
    echo $(if ,true,false)
    echo $(if 1,true,false)
    echo $(if 1,true,false).
-------

address@hidden /tmp]$ make -f test.mk retain_core
echo false
false
echo true
true
address@hidden /tmp]$ make -f test.mk dump_core
Segmentation Fault (core dumped)
address@hidden /tmp]$ alias make
alias make='/usr/local/gnu/bin/make'
address@hidden /tmp]$ make -v
GNU Make version 3.78.1, by Richard Stallman and Roland McGrath.
Built for sparc-sun-solaris2.6
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

Report bugs to <address@hidden>.

address@hidden /tmp]$