[Build, cmake] Add -Werror override option (#6429)
authorVladimir Glavnyy <31897320+vglavnyy@users.noreply.github.com>
Wed, 10 Feb 2021 19:49:34 +0000 (02:49 +0700)
committerGitHub <noreply@github.com>
Wed, 10 Feb 2021 19:49:34 +0000 (11:49 -0800)
commit1b88655b00af78b4088dce39b77c2caeef8844ff
tree80d3caf2b35bdeb27c2146c2bc0b8fc3ade6cd02
parent0b15916e50a01c3e960c4e414bbcd9f4c30b05cf
[Build, cmake] Add -Werror override option (#6429)

* [Build, cmake] Add -Werror override option

This commit adds FLATBUFFERS_CXX_FLAGS cmake option.
This option allows override the -Werror flag (or any other flags).
Related issues:  #6337, #5930

* Remove CMAKE_CXX_FLAGS replace option
CMakeLists.txt
docs/source/Building.md