[U-Boot] [PATCH] tools: adopt --std=gnu99 where C99 comments are needed

[Philipp Tomsich]

Following the conversion of the SPDX license tags, a number of files
compiled with -pedantic now generate warnings similar to the following
for using C99-style '//' comments in ISO C90 code:

  tools/gen_eth_addr.c:1:1: warning: C++ style comments are not allowed in ISO C90
   // SPDX-License-Identifier: GPL-2.0+
   ^

The SPDX comment-style change means that these files have adopted C99,
so we change the language-standard to --std=gnu99 to let the compiler
know this.

References: commit 83d290c56fab ("SPDX: Convert all of our single license tags to Linux Kernel style")
Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
---

 tools/Makefile | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/Makefile b/tools/Makefile
index 5dd33ed..079d902 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -38,11 +38,11 @@ hostprogs-$(CONFIG_BUILD_ENVCRC) += envcrc
 envcrc-objs := envcrc.o lib/crc32.o env/embedded.o lib/sha1.o
 
 hostprogs-$(CONFIG_CMD_NET) += gen_eth_addr
-HOSTCFLAGS_gen_eth_addr.o := -pedantic
+HOSTCFLAGS_gen_eth_addr.o := --std=gnu99 -pedantic
 
 hostprogs-$(CONFIG_CMD_NET) += gen_ethaddr_crc
 gen_ethaddr_crc-objs := gen_ethaddr_crc.o lib/crc8.o
-HOSTCFLAGS_gen_ethaddr_crc.o := -pedantic
+HOSTCFLAGS_gen_ethaddr_crc.o := --std=gnu99 -pedantic
 
 hostprogs-$(CONFIG_CMD_LOADS) += img2srec
 HOSTCFLAGS_img2srec.o := -pedantic
@@ -200,10 +200,10 @@ hostprogs-$(CONFIG_MIPS) += mips-relocs
 # that won't build on some weird host compiler -- though there are lots of
 # exceptions for files that aren't complaint.
 HOSTCFLAGS_crc32.o := -pedantic
-HOSTCFLAGS_crc8.o := -pedantic
+HOSTCFLAGS_crc8.o := --std=gnu99 -pedantic
 HOSTCFLAGS_md5.o := -pedantic
-HOSTCFLAGS_sha1.o := -pedantic
-HOSTCFLAGS_sha256.o := -pedantic
+HOSTCFLAGS_sha1.o := --std=gnu99 -pedantic
+HOSTCFLAGS_sha256.o := --std=gnu99 -pedantic
 
 quiet_cmd_wrap = WRAP    $@
 cmd_wrap = echo "\#include <../$(patsubst $(obj)/%,%,$@)>" >$@
-- 
2.1.4