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[GH-ISSUE #2661] Fedora 30 Compilation Errors #1677

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opened 2026-05-05 08:19:27 -06:00 by gitea-mirror · 3 comments

gitea-mirror commented

2026-05-05 08:19:27 -06:00

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Originally created by @SkewedZeppelin on GitHub (Apr 23, 2019).
Original GitHub issue: https://github.com/netblue30/firejail/issues/2661

Fedora 30 has changed the default compile flags for programs. One new addition is -fcf-protection which is marked incompatible with -mindirect-branch.

Example:

/usr/include/bits/stdio.h: In function 'getchar':
/usr/include/bits/stdio.h:48:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
   48 | {
      | ^

https://github.com/netblue30/firejail/blob/master/configure#L3113
will need to be changed.

Originally created by @SkewedZeppelin on GitHub (Apr 23, 2019). Original GitHub issue: https://github.com/netblue30/firejail/issues/2661 Fedora 30 has changed the default compile flags for programs. One new addition is `-fcf-protection` which is marked incompatible with `-mindirect-branch`. Example: ``` /usr/include/bits/stdio.h: In function 'getchar': /usr/include/bits/stdio.h:48:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible 48 | { | ^ ``` https://github.com/netblue30/firejail/blob/master/configure#L3113 will need to be changed.

gitea-mirror closed this issue

2026-05-05 08:19:28 -06:00

gitea-mirror commented

2026-05-05 08:19:31 -06:00

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@chiraag-nataraj commented on GitHub (May 21, 2019):

So how do we do this such that it doesn't affect other distros which haven't (yet?) done this?

@chiraag-nataraj commented on GitHub (May 21, 2019): So how do we do this such that it doesn't affect other distros which haven't (yet?) done this?

gitea-mirror commented

2026-05-05 08:19:32 -06:00

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@rusty-snake commented on GitHub (May 31, 2019):

Maybe something like

[ -e /etc/fedora-release ] && [ "$(cat /etc/fedora-release)" = "Fedora release 30 (Thirty)" ]

@rusty-snake commented on GitHub (May 31, 2019): Maybe something like ```bash [ -e /etc/fedora-release ] && [ "$(cat /etc/fedora-release)" = "Fedora release 30 (Thirty)" ] ```

gitea-mirror commented

2026-05-05 08:19:32 -06:00

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@Vincent43 commented on GitHub (May 31, 2019):

I think it's better to detect if -fcf-protection is passed in CFLAGS.

@Vincent43 commented on GitHub (May 31, 2019): I think it's better to detect if `-fcf-protection` is passed in `CFLAGS`.

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Reference: github-starred/firejail#1677

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