Continuing after errors

[Ed Swierk]

My Makefile has an "all" target that runs a series of commands:

all:
        command1
        command2
        command3


I would like a make all to continue running all the commands even if an 
earlier command returns a nonzero code, but still have the make command 
itself return nonzero to indicate an error.

One way to achieve the first requirement is to prefix each command with -, 
so that errors are ignored:

all:
        -command1
        -command2
        -command3

However, this causes make to return 0, even when one of the commands returns 
nonzero.  Running make --ignore-errors has the same effect.

I know it's possible to hack around this by scripting (save the return code 
after each command, etc.), but I thought I'd ask whether there's some simple 
make option that I'm overlooking.

Any tips would be appreciated.

--Ed