Update Makefile

[20urc3]

Fixing the following error:

f1_c_fuzz.c: In function ‘gen_node_NAUGHTYSTRING’:
f1_c_fuzz.c:13366:53: warning: unpaired UTF-8 bidirectional control characters detected [-Wbidi-chars=]

[20urc3]

Fixes #51

[h1994st]

@20urc3 Thanks for the pull request.

Could you take a look at the error?

cc1: error: ‘-Wno-error=bidi-chars’: no option ‘-Wbidi-chars’

-Wbidi-chars option was introduced in GCC 12. However, ubuntu-latest image used by Github Actions is Ubuntu 22.04, and the default GCC is 11.2.0 (doc). As mentioned in the doc, ubuntu-latest has GCC 10, 11, and 12 installed.

Regarding this pull request:

• We should add a guard condition to check the GCC version before appending -Wno-error=bidi-chars option to C_FLAGS
• We should also update the CMakeLists.txt to make both building scripts consistent
• (Optional) We'd better update the CI configuration to test on different GCC versions via the matrix strategy

[20urc3]

Hi @h1994st
Yes you answered your question. The issue is the presence (or not) of this flag in the used version of GCC.

[h1994st]

Hi @20urc3, could you help resolve the error in CI?