From e3311cebdb29a3267843cf656a32f01c5062897e Mon Sep 17 00:00:00 2001
From: Eric Engestrom <eric@engestrom.ch>
Date: Sun, 25 Oct 2020 09:49:29 +0100
Subject: [PATCH] Fix GCC 10+ build

GCC 10 changed the default option from `-fcommon` to `-fno-common`.

A quick and dirty fix could be to just set `-fcommon` in CMakeLists.txt,
but the proper fix is to move the variables to a single compilation unit
and simply reference them in the other CU, instead of each CU having its
own copy.

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
---
 process.c | 3 +++
 process.h | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/process.c b/process.c
index 59bdf10..8ccbf34 100644
--- a/process.c
+++ b/process.c
@@ -127,6 +127,9 @@ static int pid_to_cmd(pid_t pid, char *cmd, size_t cmd_size)
 #error "Please provide a pid_to_cmd for your platform"
 #endif
 
+int ARGC;
+char **ARGV;
+
 void process_set_name(const char *name)
 {
 	size_t argslen = 0;
diff --git a/process.h b/process.h
index 58c2480..4cc2cf4 100644
--- a/process.h
+++ b/process.h
@@ -4,8 +4,8 @@
 #include <stdbool.h>
 #include <sys/types.h>
 
-int ARGC;
-char **ARGV;
+extern int ARGC;
+extern char **ARGV;
 
 void process_set_name(const char *name);
 void process_disable_ptrace(void);