package/dillo: fix build with gcc 10

Fixes:
 - http://autobuild.buildroot.org/results/9c777af97fe50143c6a68f0170fc86c87d8ead3f

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/dillo/0004-fix-build-with-gcc-10.patch

@@ -0,0 +1,124 @@
+fix build with gcc 10
+
+gcc 10 is now defaulting to -fno-common resulting in the following build
+failures:
+
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-buildroot-linux-gnueabihf-gcc  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g2 -D_FORTIFY_SOURCE=1 -DENABLE_IPV6 -DD_DNS_THREADED -D_REENTRANT -D_THREAD_SAFE -Wall -W -Wno-unused-parameter -Waggregate-return   -o dpid dpi.o dpi_socket_dir.o dpid.o dpid_common.o main.o misc_new.o ../dpip/libDpip.a ../dlib/libDlib.a 
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: dpi_socket_dir.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: multiple definition of `dpi_errno'; dpi.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: multiple definition of `dpi_errno'; dpi.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: dpid_common.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: multiple definition of `dpi_errno'; dpi.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:64: multiple definition of `sock_set'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:64: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:61: multiple definition of `services_list'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:61: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:58: multiple definition of `dpi_attr_list'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:58: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:55: multiple definition of `numsocks'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:55: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:52: multiple definition of `numdpis'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:52: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:31: multiple definition of `srs_fd'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:31: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:28: multiple definition of `srs_name'; dpid.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid.h:28: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: main.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: multiple definition of `dpi_errno'; dpi.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: first defined here
+/nvme/rc-buildroot-test/scripts/instance-0/output-1/host/lib/gcc/arm-buildroot-linux-gnueabihf/10.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: misc_new.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: multiple definition of `dpi_errno'; dpi.o:/nvme/rc-buildroot-test/scripts/instance-0/output-1/build/dillo-3.0.5/dpid/dpid_common.h:44: first defined here
+
+So add missing extern for srs_fd, numdpis, numsocks, dpi_attr_list,
+services_list and sock_set
+
+Also remove srs_name which is never used and give a name to dpi_errno
+enum
+
+Fixes:
+ - http://autobuild.buildroot.org/results/9c777af97fe50143c6a68f0170fc86c87d8ead3f
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: sent to jcid@dillo.org]
+
+diff -r f60d55c02567 dpid/dpid.c
+--- a/dpid/dpid.c	Fri Oct 05 22:05:08 2018 +0200
++++ b/dpid/dpid.c	Thu Aug 27 18:16:50 2020 +0200
+@@ -38,6 +38,12 @@
+ 
+ #define QUEUE 5
+ 
++int srs_fd;
++int numdpis;
++int numsocks;
++struct dp *dpi_attr_list;
++Dlist *services_list;
++fd_set sock_set;
+ volatile sig_atomic_t caught_sigchld = 0;
+ char *SharedKey = NULL;
+ 
+diff -r f60d55c02567 dpid/dpid.h
+--- a/dpid/dpid.h	Fri Oct 05 22:05:08 2018 +0200
++++ b/dpid/dpid.h	Thu Aug 27 18:16:50 2020 +0200
+@@ -25,10 +25,9 @@
+ 
+ /*! \TODO: Should read this from dillorc */
+ #define SRS_NAME "dpid.srs"
+-char *srs_name;
+ 
+ /*! dpid's service request socket file descriptor */
+-int srs_fd;
++extern int srs_fd;
+ 
+ /*! plugin state information
+  */
+@@ -49,19 +48,19 @@
+ };
+ 
+ /*! Number of available plugins */
+-int numdpis;
++extern int numdpis;
+ 
+ /*! Number of sockets being watched */
+-int numsocks;
++extern int numsocks;
+ 
+ /*! State information for each plugin. */
+-struct dp *dpi_attr_list;
++extern struct dp *dpi_attr_list;
+ 
+ /*! service served for each plugin  */
+-Dlist *services_list;
++extern Dlist *services_list;
+ 
+ /*! Set of sockets watched for connections */
+-fd_set sock_set;
++extern fd_set sock_set;
+ 
+ /*! Set to 1 by the SIGCHLD handler dpi_sigchld */
+ extern volatile sig_atomic_t caught_sigchld;
+diff -r f60d55c02567 dpid/dpid_common.h
+--- a/dpid/dpid_common.h	Fri Oct 05 22:05:08 2018 +0200
++++ b/dpid/dpid_common.h	Thu Aug 27 18:16:50 2020 +0200
+@@ -37,10 +37,10 @@
+ 
+ 
+ /*! Error codes for dpid */
+-enum {
++enum dpi_errno {
+    no_errors,
+    dpid_srs_addrinuse /* dpid service request socket address already in use */
+-} dpi_errno;
++};
+ 
+ /*! Intended for identifying dillo plugins
+  * and related files
+diff -r f60d55c02567 dpid/main.c
+--- a/dpid/main.c	Fri Oct 05 22:05:08 2018 +0200
++++ b/dpid/main.c	Thu Aug 27 18:16:50 2020 +0200
+@@ -231,7 +231,7 @@
+    /* this sleep used to unmask a race condition */
+    // sleep(2);
+ 
+-   dpi_errno = no_errors;
++   enum dpi_errno error_code = no_errors;
+ 
+    /* Get list of available dpis */
+    numdpis = register_all(&dpi_attr_list);
+@@ -254,7 +254,7 @@
+ 
+    /* Initialise sockets */
+    if ((numsocks = init_ids_srs_socket()) == -1) {
+-      switch (dpi_errno) {
++      switch (error_code) {
+       case dpid_srs_addrinuse:
+          MSG_ERR("dpid refuses to start, possibly because:\n");
+          MSG_ERR("\t1) An instance of dpid is already running.\n");