Enable "make C=1" or "make C=2" to do sparse checking.
Blatantly ripped off from djwong's patch in e2fsprogs to
do the same.
Note, this requires unreleased sparse after v0.5, which
enables the CHAR_BIT definition; otherwise it chokes.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
diff --git a/Makefile b/Makefile
index f56aebd..bd0f9ee 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,20 @@ else
Q = @
endif
+CHECK=sparse
+CHECK_OPTS=-Wsparse-all -Wno-transparent-union -Wno-return-void -Wno-undef \
+ -Wno-non-pointer-null -D__linux__
+ifeq ("$(C)", "2")
+ CHECK_CMD=$(CHECK) $(CHECK_OPTS) -Wbitwise -D__CHECK_ENDIAN__
+else
+ ifeq ("$(C)", "1")
+ CHECK_CMD=$(CHECK) $(CHECK_OPTS)
+ else
+ CHECK_CMD=@true
+ endif
+endif
+export CHECK_CMD
+
MAKEOPTS = --no-print-directory Q=$(Q)
TOPDIR = .
diff --git a/include/buildrules b/include/buildrules
index 399635e..feae376 100644
--- a/include/buildrules
+++ b/include/buildrules
@@ -41,10 +41,12 @@ $(LTLIBRARY) : $(SUBDIRS) $(LTOBJECTS)
%.lo: %.c
@echo " [CC] $@"
$(Q)$(LTCOMPILE) -c $<
+ $(Q)$(CHECK_CMD) $(CFLAGS) $<
else
%.o: %.c
@echo " [CC] $@"
$(Q)$(CC) $(CFLAGS) -c $<
+ $(Q)$(CHECK_CMD) $(CFLAGS) $<
endif
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