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Added tests for forwards and backwards disk compatibility

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This is a bit tricky since we need two different version of littlefs in
order to test for most compatibility concerns.

Fortunately we already have scripts/changeprefix.py for version-specific
symbols, so it's not that hard to link in the previous version of
littlefs in CI as a separate set of symbols, "lfsp_" in this case.

So that we can at least test the compatibility tests locally, I've added
an ifdef against the expected define "LFSP" to define a set of aliases
mapping "lfsp_" symbols to "lfs_" symbols. This is manual at the moment,
and a bit hacky, but gets the job done.

---

Also changed BUILDDIR creation to derive subdirectories from a few
Makefile variables. This makes the subdirectories less manual and more
flexible for things like LFSP. Note this wasn't possible until BUILDDIR
was changed to default to "." when omitted.
This commit is contained in:
Christopher Haster
2023-04-20 02:13:58 -05:00
parent f0cc1db793
commit 116332d3f7
2 changed files with 1294 additions and 11 deletions
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27
Makefile
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@@ -1,15 +1,5 @@
ifdef BUILDDIR
# bit of a hack, but we want to make sure BUILDDIR directory structure
# is correct before any commands
$(if $(findstring n,$(MAKEFLAGS)),, $(shell mkdir -p \
$(BUILDDIR)/ \
$(BUILDDIR)/bd \
$(BUILDDIR)/runners \
$(BUILDDIR)/tests \
$(BUILDDIR)/benches))
endif
# overrideable build dir, default is in-place
BUILDDIR ?= .
# overridable target/src/tools/flags/etc
ifneq ($(wildcard test.c main.c),)
TARGET ?= $(BUILDDIR)/lfs
@@ -163,6 +153,18 @@ TESTFLAGS += --perf-path="$(PERF)"
BENCHFLAGS += --perf-path="$(PERF)"
endif
# this is a bit of a hack, but we want to make sure the BUILDDIR
# directory structure is correct before we run any commands
ifneq ($(BUILDDIR),.)
$(if $(findstring n,$(MAKEFLAGS)),, $(shell mkdir -p \
$(addprefix $(BUILDDIR)/,$(dir \
$(SRC) \
$(TESTS) \
$(TEST_SRC) \
$(BENCHES) \
$(BENCH_SRC)))))
endif
# commands
@@ -514,6 +516,9 @@ $(BUILDDIR)/runners/bench_runner: $(BENCH_OBJ)
$(BUILDDIR)/%.o $(BUILDDIR)/%.ci: %.c
$(CC) -c -MMD $(CFLAGS) $< -o $(BUILDDIR)/$*.o
$(BUILDDIR)/%.o $(BUILDDIR)/%.ci: $(BUILDDIR)/%.c
$(CC) -c -MMD $(CFLAGS) $< -o $(BUILDDIR)/$*.o
$(BUILDDIR)/%.s: %.c
$(CC) -S $(CFLAGS) $< -o $@