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swanctl: Add missing extern for swanctl_dir variable in header

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This clearly never was correct, but didn't cause problems so far.
However, GCC 10 will default to `-fno-common` instead of
`-fcommon` (https://gcc.gnu.org/PR85678), so compilation there fails
with something like:

```
libtool: link: gcc ... -o .libs/swanctl ...
ld: commands/load_authorities.o:strongswan/src/swanctl/./swanctl.h:33:
  multiple definition of `swanctl_dir'; commands/load_all.o:strongswan/src/swanctl/./swanctl.h:33: first defined here
```

Fixes: 501bd53a6c ("swanctl: Make credential directories relative to swanctl.conf")
Closes strongswan/strongswan#163.
This commit is contained in:
Tobias Brunner
2020-01-28 15:29:40 +01:00
parent 8ea13bbc5c
commit 91c6387e69
1 changed files with 1 additions and 1 deletions
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src/swanctl/swanctl.h
+1 -1
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@@ -30,7 +30,7 @@
/** /**
* Base directory for credentials and config * Base directory for credentials and config
*/ */
char *swanctl_dir; extern char *swanctl_dir;
/** /**
* Configuration file for connections, etc. * Configuration file for connections, etc.