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We do not touch the erlang.mk file anymore. We only patch the
Makefile to include the top-level Erlang.mk by changing the
'include erlang.mk' line to look for ERLANG_MK_FILENAME if it
is defined. The modified Makefile can be committed safely.
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Before this change, the build would continue, even if a dependency
failed to build. This could lead to obscure errors in the middle of a
testsuite for instance.
With this change, the build fails immediately, exactly like when a
regular dependency fails to build.
While here, replace most uses of `|| exit $$?` with `set -e`. This
simplifies error handling if we need to add more commands to each
blocks.
Also, echo error messages to stderr.
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.. to fetch and list deps recurvively.
Therefore, they work on direct dependencies, dependencies' dependencies,
and so on. Nothing is built with those targets.
The following targets are also available to work on other kinds of
dependencies:
make fetch-doc-deps
make fetch-rel-deps
make fetch-test-deps
make fetch-shell-deps
make list-doc-deps
make list-rel-deps
make list-test-deps
make list-shell-deps
In all cases, they include "normal" and eg. "test" dependencies of the
top-level project, then only "normal" dependencies' dependencies.
It's possible to include several kinds in one go:
make fetch-deps DEP_TYPES='doc test'
make list-deps DEP_TYPES='doc test'
As it may be difficult to use the output of `make list-*` because
the list could appear after other targets output (like dependencies
fetching), the list is available in files pointed by the following
variables:
$(ERLANG_MK_RECURSIVE_DEPS_LIST)
$(ERLANG_MK_RECURSIVE_DOC_DEPS_LIST)
$(ERLANG_MK_RECURSIVE_REL_DEPS_LIST)
$(ERLANG_MK_RECURSIVE_TEST_DEPS_LIST)
$(ERLANG_MK_RECURSIVE_SHELL_DEPS_LIST)
Internally, `list-deps` is simply implemented on top of `fetch-deps`:
the latter fills a sorted log with all the directories it traversed.
`list-deps` finally just prints the log file to stdout.
Fixes #560.
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