From 95d45cde11c95c775308e7f6ae170b4f8cbac096 Mon Sep 17 00:00:00 2001 From: Thomas Monjalon Date: Wed, 5 Feb 2020 16:39:23 +0100 Subject: [PATCH] buildtools: allow pedantic empty pmdinfo If a driver has no info generated by pmdinfogen, and if this driver is compiled as pedantic, then an failure would occur: drivers/rte_common_mlx5.pmd.c:1: error: ISO C forbids an empty translation unit [-Werror=pedantic] Such error is triggered with the new mlx5 common directory. In order to allow an "empty driver info" compiled in pedantic mode, the script generating .pmd.c file is modified to add a static string unconditionnaly. The minimal generated code is: static __attribute__((unused)) const char *generator = "/path/to/dpdk/buildtools/gen-pmdinfo-cfile.sh"; Signed-off-by: Thomas Monjalon Acked-by: Bruce Richardson --- buildtools/gen-pmdinfo-cfile.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/buildtools/gen-pmdinfo-cfile.sh b/buildtools/gen-pmdinfo-cfile.sh index 0b6dc2ce4f..43059cf364 100755 --- a/buildtools/gen-pmdinfo-cfile.sh +++ b/buildtools/gen-pmdinfo-cfile.sh @@ -6,7 +6,8 @@ arfile=$1 output=$2 pmdinfogen=$3 -echo > $output +# The generated file must not be empty if compiled in pedantic mode +echo 'static __attribute__((unused)) const char *generator = "'$0'";' > $output for ofile in `ar t $arfile` ; do ar p $arfile $ofile | $pmdinfogen - - >> $output 2> /dev/null done -- 2.20.1