build: Add support for GCC 100.17.5

GCC 10 defaults to -fno-common, so some variables that were defined in
the headers needed to be declared "extern". The GCC 10 static analyzer
can now be invoked using the DebugAnalyzer build option.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

13 files changed, 21 insertions, 8 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 535a0540..a8310274 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ include(GNUInstallDirs)
 
 set(PACKAGE_VERSION_MAJOR  0)
 set(PACKAGE_VERSION_MINOR 17)
-set(PACKAGE_VERSION_PATCH  4)
+set(PACKAGE_VERSION_PATCH  5)
 
 set(PACKAGE_NAME        "${CMAKE_PROJECT_NAME}")
 set(PACKAGE_DESCRIPTION "The Ouroboros prototype")
@@ -20,7 +20,7 @@ set(PACKAGE_VERSION
 
 if (NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "Release" CACHE STRING
-      "Build type (Release, Debug, DebugASan, DebugTSan, DebugLSan)" FORCE)
+      "Build type (Release, Debug, DebugASan, DebugTSan, DebugLSan, DebugAnalyzer)" FORCE)
 endif()
 
 if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
@@ -98,6 +98,8 @@ elseif (CMAKE_BUILD_TYPE STREQUAL "DebugTSan")
   test_and_set_c_compiler_flag_global(-fsanitize=thread)
 elseif (CMAKE_BUILD_TYPE STREQUAL "DebugLSan")
   test_and_set_c_compiler_flag_global(-fsanitize=leak)
+elseif (CMAKE_BUILD_TYPE STREQUAL "DebugAnalyzer")
+  test_and_set_c_compiler_flag_global(-fanalyzer)
 endif ()
 
 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/ouroboros-dev.pc.in"
diff --git a/src/ipcpd/broadcast/main.c b/src/ipcpd/broadcast/main.c
index 120b2bf1..fd2c32dd 100644
--- a/src/ipcpd/broadcast/main.c
+++ b/src/ipcpd/broadcast/main.c
@@ -53,6 +53,8 @@
 
 #define THIS_TYPE IPCP_BROADCAST
 
+struct ipcp ipcpi;
+
 static int initialize_components(const struct ipcp_config * conf)
 {
         ipcpi.layer_name = strdup(conf->layer_info.layer_name);
diff --git a/src/ipcpd/eth/eth.c b/src/ipcpd/eth/eth.c
index 6b17912b..618ba44f 100644
--- a/src/ipcpd/eth/eth.c
+++ b/src/ipcpd/eth/eth.c
@@ -145,6 +145,8 @@
 #define NAME_QUERY_REQ       2
 #define NAME_QUERY_REPLY     3
 
+struct ipcp ipcpi;
+
 struct mgmt_msg {
 #if defined(BUILD_ETH_DIX)
         uint16_t seid;
diff --git a/src/ipcpd/ipcp.h b/src/ipcpd/ipcp.h
index 02c74f50..84e0386a 100644
--- a/src/ipcpd/ipcp.h
+++ b/src/ipcpd/ipcp.h
@@ -79,7 +79,7 @@ struct ipcp_ops {
 #define ipcp_dir_hash_strlen() (hash_len(ipcpi.dir_hash_algo) * 2)
 #define ipcp_dir_hash_len() (hash_len(ipcpi.dir_hash_algo))
 
-struct ipcp {
+extern struct ipcp {
         pid_t              irmd_pid;
         char *             name;
 
diff --git a/src/ipcpd/local/main.c b/src/ipcpd/local/main.c
index fcf51626..48c2f67b 100644
--- a/src/ipcpd/local/main.c
+++ b/src/ipcpd/local/main.c
@@ -51,6 +51,8 @@
 #define THIS_TYPE     IPCP_LOCAL
 #define ALLOC_TIMEOUT 10 /* ms */
 
+struct ipcp ipcpi;
+
 struct {
         struct shim_data * shim_data;
 
diff --git a/src/ipcpd/udp/main.c b/src/ipcpd/udp/main.c
index 04c21a8b..c59ea36d 100644
--- a/src/ipcpd/udp/main.c
+++ b/src/ipcpd/udp/main.c
@@ -77,6 +77,8 @@
 #define MGMT_FRAME_SIZE          (sizeof(struct mgmt_msg))
 #define MGMT_FRAME_BUF_SIZE      2048
 
+struct ipcp ipcpi;
+
 /* Keep order for alignment. */
 struct mgmt_msg {
         uint32_t eid;
diff --git a/src/ipcpd/unicast/dir.c b/src/ipcpd/unicast/dir.c
index 43ee94f0..b99380fe 100644
--- a/src/ipcpd/unicast/dir.c
+++ b/src/ipcpd/unicast/dir.c
@@ -45,6 +45,7 @@
 
 #define KAD_B (hash_len(ipcpi.dir_hash_algo) * CHAR_BIT)
 
+struct ipcp icpci;
 struct dht * dht;
 
 int dir_init(void)
diff --git a/src/ipcpd/unicast/main.c b/src/ipcpd/unicast/main.c
index 43052209..0ab37d25 100644
--- a/src/ipcpd/unicast/main.c
+++ b/src/ipcpd/unicast/main.c
@@ -55,6 +55,8 @@
 
 #define THIS_TYPE IPCP_UNICAST
 
+struct ipcp ipcpi;
+
 static int initialize_components(const struct ipcp_config * conf)
 {
         ipcpi.layer_name = strdup(conf->layer_info.layer_name);
diff --git a/src/ipcpd/unicast/pol/alternate_pff.h b/src/ipcpd/unicast/pol/alternate_pff.h
index 5e5fca3d..b3d9c83c 100644
--- a/src/ipcpd/unicast/pol/alternate_pff.h
+++ b/src/ipcpd/unicast/pol/alternate_pff.h
@@ -56,6 +56,6 @@ int            alternate_flow_state_change(struct pff_i * pff_i,
                                            int            fd,
                                            bool           up);
 
-struct pol_pff_ops alternate_pff_ops;
+extern struct pol_pff_ops alternate_pff_ops;
 
 #endif /* OUROBOROS_IPCPD_UNICAST_ALTERNATE_PFF_H */
diff --git a/src/ipcpd/unicast/pol/flat.h b/src/ipcpd/unicast/pol/flat.h
index 54460bb3..a542d7b7 100644
--- a/src/ipcpd/unicast/pol/flat.h
+++ b/src/ipcpd/unicast/pol/flat.h
@@ -31,6 +31,6 @@ int      flat_fini(void);
 
 uint64_t flat_address(void);
 
-struct pol_addr_auth_ops flat_ops;
+extern struct pol_addr_auth_ops flat_ops;
 
 #endif /* OUROBOROS_IPCPD_UNICAST_FLAT_H */
diff --git a/src/ipcpd/unicast/pol/link_state.h b/src/ipcpd/unicast/pol/link_state.h
index 9d4858e1..9a1ada1b 100644
--- a/src/ipcpd/unicast/pol/link_state.h
+++ b/src/ipcpd/unicast/pol/link_state.h
@@ -36,6 +36,6 @@ struct routing_i * link_state_routing_i_create(struct pff * pff);
 
 void               link_state_routing_i_destroy(struct routing_i * instance);
 
-struct pol_routing_ops link_state_ops;
+extern struct pol_routing_ops link_state_ops;
 
 #endif /* OUROBOROS_IPCPD_UNICAST_POL_LINK_STATE_H */
diff --git a/src/ipcpd/unicast/pol/multipath_pff.h b/src/ipcpd/unicast/pol/multipath_pff.h
index a8ee088f..ecbb664a 100644
--- a/src/ipcpd/unicast/pol/multipath_pff.h
+++ b/src/ipcpd/unicast/pol/multipath_pff.h
@@ -53,6 +53,6 @@ void multipath_pff_flush(struct pff_i * pff_i);
 int            multipath_pff_nhop(struct pff_i * pff_i,
                                   uint64_t       addr);
 
-struct pol_pff_ops multipath_pff_ops;
+extern struct pol_pff_ops multipath_pff_ops;
 
 #endif /* OUROBOROS_IPCPD_UNICAST_MULTIPATH_PFF_H */
diff --git a/src/ipcpd/unicast/pol/simple_pff.h b/src/ipcpd/unicast/pol/simple_pff.h
index 2dfce45c..5c972347 100644
--- a/src/ipcpd/unicast/pol/simple_pff.h
+++ b/src/ipcpd/unicast/pol/simple_pff.h
@@ -52,6 +52,6 @@ void           simple_pff_flush(struct pff_i * pff_i);
 int            simple_pff_nhop(struct pff_i * pff_i,
                                uint64_t       addr);
 
-struct pol_pff_ops simple_pff_ops;
+extern struct pol_pff_ops simple_pff_ops;
 
 #endif /* OUROBOROS_IPCPD_UNICAST_SIMPLE_PFF_H */