"STRIP" is currently hard-set to "strip", which fails for
cross-compiled binaries.
```
install-strip:
$(MAKE) $(MFLAGS) INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s
--strip-program=${MINE_CROSS_COMPILE}strip' \
prefix=${prefix} exec_prefix=${exec_prefix} \
DESTDIR=$(DESTDIR) install
```
Examples of implementations that allow a custom "strip" program to be
used can be found in coreutils and make:
```
install-strip:
if test -z '$(STRIP)'; then \
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)"
INSTALL_STRIP_FLAG=-s \
install;
```
During a build setting 'INSTALL_STRIP_PROGRAM="install -s
--strip-program=<other>-strip"', allows the install with strip to
succeed.
It'd be nice if this implementation could be standardized under the
GNU umbrella.
