michael@0: #!/bin/sh
michael@0: # This Source Code Form is subject to the terms of the Mozilla Public
michael@0: # License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: # file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: #
michael@0: # Usage from makefile:
michael@0: #   ELOG = . $(topdir)/build/autoconf/print-failed-commands.sh
michael@0: #   $(ELOG) $(CC) $CFLAGS -o $@ $<
michael@0: #
michael@0: # This shell script is used by the build system to print out commands that fail
michael@0: # to execute properly.  It is designed to make the "make -s" command more
michael@0: # useful.
michael@0: #
michael@0: # Note that in the example we are sourcing rather than execing the script.
michael@0: # Since make already started a shell for us, we might as well use it rather
michael@0: # than starting a new one.
michael@0: 
michael@0: ( exec "$@" ) || {
michael@0:     echo
michael@0:     echo "In the directory " `pwd`
michael@0:     echo "The following command failed to execute properly:"
michael@0:     echo "$@"
michael@0:     exit 1;
michael@0: }