Libraries backtrace and luajit does not compile with PIC correctly

[sirwio]

This was disproved when compiling fluent-bit with PIE by setting CMAKE_EXE_LINKER_FLAGS=-pie

The backtrace project seems to require to explicitly set --with-fpic to be compiled with PIC support. The luajit has a wierd construct of setting fpic in the XCFLAGS. XCFLAGS is inteded to be used when compiling the compiler itself - not for this purspose. Instead this commit sets CFLAGS=-fpic for UNIX builds. The XCFLAGS is kept since other platforrms/compilers may depend on it.

Signed-off-by: sirwio [email protected]

---

Enter [N/A] in the box, if an item is not applicable to your change.

Testing Before we can approve your change; please submit the following in a comment:

• [ N/A] Example configuration file for the change
• [ N/A] Debug log output from testing the change

• [ N/A] Attached Valgrind output that shows no leaks or memory corruption was found

Documentation

• [ N/A] Documentation required for this feature

---

Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

[sirwio]

The problem may not be found with newer gcc compilers since they may compile with -fPIC by default.

The issue was found when compiling with gcc version 4.4.7

[github-actions[bot]]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[github-actions[bot]]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[github-actions[bot]]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.