For some reason, the env vars are set correctly without refering the variable in `matrix` case-sensitvely:
```
2023-08-01T05:05:58.4626090Z env:
2023-08-01T05:05:58.4626367Z AR: arm-linux-gnueabihf-ar
2023-08-01T05:05:58.4626690Z CHOST: arm-linux-gnueabihf
2023-08-01T05:05:58.4626961Z CC: arm-linux-gnueabihf-gcc
2023-08-01T05:05:58.4627332Z CPP: arm-linux-gnueabihf-cpp
2023-08-01T05:05:58.4627662Z CXX: arm-linux-gnueabihf-g++
```
For clarify, we update them to match the definitions. Besides, `CXX` is
not needed and removed.
This makes the standard build instructions a bit easier,
just ./configure, and also requires less tools installed (bison).
Also i think few people probably want to generate the lexer and paser code.
* Release pipeline
* Group CI builds for different OSes into `ci.yml`.
* Add release job to release `jq` when tag is in the format of v*.
* Use `clang` as the only compiler on CI.
* Provide extensible matrix for future cross-compile builds, e.g.
for https://github.com/jqlang/jq/pull/2618.
* Locate bison for Windows build
* Also install flex for Windows build
* Add matrix to test all available GH Actions images
* Enable all tests for Windows
* Run `brew update-reset` when `brew update` fails
`brew update` can fail for "Error: Fetching /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask failed!"
Ref: https://github.com/owenthereal/jq/actions/runs/5432314910/jobs/9879266028#step:3:19
* Select gcc binaries to release
* Only enable CI when push to master & tag
* Try out statick build
* No need to enforce the same `AM_INIT_AUTOMAKE` version for MacOS
* Disable static build for ubuntu-20.04
See https://github.com/jqlang/jq/pull/2620#discussion_r1248936822
Nicolas Williams