[dpdk-dev] [PATCH] mk: use misleading indentation warning when available

[Gaetan Rivet <gaetan.rivet@6wind.com>]

-Wmisleading-indentation was introduced in GCC 6.0.

Use it at least when available. This should catch most common
error of the types (due to the codebase being properly tabbed),
but will still miss patterns such as

    if (!condition)
    	// commented_fn_call();
    do_stuff();

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---

I completely agree that we should change the coding style and force
all if()s to have brackets.

In the meantime, this patch might help alleviate the issue.

 mk/toolchain/gcc/rte.vars.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mk/toolchain/gcc/rte.vars.mk b/mk/toolchain/gcc/rte.vars.mk
index d8b99faf6..2c9bde1d5 100644
--- a/mk/toolchain/gcc/rte.vars.mk
+++ b/mk/toolchain/gcc/rte.vars.mk
@@ -87,5 +87,9 @@ WERROR_FLAGS += -Wimplicit-fallthrough=2
 WERROR_FLAGS += -Wno-format-truncation
 endif
 
+ifeq ($(shell test $(GCC_VERSION) -gt 60 && echo 1), 1)
+WERROR_FLAGS += -Wmisleading-indentation
+endif
+
 export CC AS AR LD OBJCOPY OBJDUMP STRIP READELF
 export TOOLCHAIN_CFLAGS TOOLCHAIN_LDFLAGS TOOLCHAIN_ASFLAGS
-- 
2.19.1