[dpdk-dev] [PATCH] scripts: fix symbol overriding in configuration files

[David Marchand]

Hello Bruce,

On Fri, Nov 28, 2014 at 2:56 PM, Bruce Richardson <
bruce.richardson at intel.com> wrote:

> On Thu, Nov 27, 2014 at 10:17:22AM -0800, Thomas Monjalon wrote:
> > > When redefining the same symbol in configuration (basically after an
> inclusion),
> > > we need to undefine the previous symbol to avoid "redefined" errors.
> > >
> > > Signed-off-by: David Marchand <david.marchand at 6wind.com>
> >
> > Acked-by: Thomas Monjalon <thomas.monjalon at 6wind.com>
> >
> > Applied
> >
> This patch doesn't seem to work on FreeBSD. I'm still investigating how to
> fix
> it but right now compilation with gcc/clang on FreeBSD is broken due to the
> config.h file having lines like the below in it :-(
>
> /usr/home/bruce/
> dpdk.org/x86_64-native-bsdapp-clang/include/rte_config.h:3:21: fatal
> error: extra tokens at end of #undef directive [-Wextra-tokens]
> #undef RTE_EXEC_ENVn#define RTE_EXEC_ENV "bsdapp"
>

This is probably because of the \n in the sed.

Can you try something like this (I did not like this version of my patch at
first because it is not that readable) ?


diff --git a/scripts/gen-config-h.sh b/scripts/gen-config-h.sh
index 2fac08c..d36efd6 100755
--- a/scripts/gen-config-h.sh
+++ b/scripts/gen-config-h.sh
@@ -35,9 +35,11 @@ echo "#ifndef __RTE_CONFIG_H"
 echo "#define __RTE_CONFIG_H"
 grep CONFIG_ $1 |
 grep -v '^[ \t]*#' |
-sed 's,CONFIG_\(.*\)=y.*$,#undef \1\n#define \1 1,' |
+sed 's,CONFIG_\(.*\)=y.*$,#undef \1\
+#define \1 1,' |
 sed 's,CONFIG_\(.*\)=n.*$,#undef \1,' |
-sed 's,CONFIG_\(.*\)=\(.*\)$,#undef \1\n#define \1 \2,' |
+sed 's,CONFIG_\(.*\)=\(.*\)$,#undef \1\
+#define \1 \2,' |
 sed 's,\# CONFIG_\(.*\) is not set$,#undef \1,'
 echo "#endif /* __RTE_CONFIG_H */"



-- 
David Marchand