execvp error:cygwin+make+busybox

[John Williams]

Hello,

Attempting to cross-compile Busybox 1.00 under Cygwin (1.5.16-1) I am 
hitting an error similar to one previously reported on the Cygwin list 
(Jan 05):

http://www.cygwin.com/ml/cygwin/2005-01/msg00657.html

No resolution was posted to the list at that time.

The busybox Makefile attempts to run the host CC (gcc in this case) to 
build some setup/config tools, as well as spawning a shell script to do 
a bit of preparatory work.  This is before any cross-compiling begins.

Make reports the following error:

gcc -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -o scripts/mkdep 
/cygdrive/e/cygwin-uclinux/uClinux-dist/user/busybox/scripts/mkdep.c
make[3]: execvp: gcc: Invalid argument
make[3]: *** [scripts/mkdep] Error 127

The problem occurs with Make versions 3.79.1 and 3.80 (haven't tested 
any earlier versions)

The Makefile fragment which fails looks like this:

scripts/mkdep: $(top_srcdir)/scripts/mkdep.c
         $(HOSTCC) $(HOSTCFLAGS) -o $@ $<

HOSTCC and HOSTCFLAGS can be deduced from above output, but there's 
nothing exotic in there.

Another fragment which fails is this:

.config.mkconfig: $(ROOTDIR)/config/.config
         sh ./mkconfig > .config.tmp

This fragment fails with:
make[3]: execvp: sh: Invalid argument

If executed directly from the commandline, these commands complete fine 
- it's only when spawning from within the Makefile.

cygcheck output is attached.

Any insights into the nature and possible solution of this problem would 
be greatly appreciated.

Thanks,

John
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