ngc does not support relative rootDir via cli #36290
Description
🐞 bug report
Affected Package
@angular/compiler-cli
Is this a regression?
nope
Description
I'm attempting to use ngc under bazel using the ts_project rule and replacing tsc with ngc.
In order to do this most of the command line args need to equal in both ngc and tsc, however it would appear that rootDir is is treated differently under ngc.
Thee fix here would be to make rootDir resolve an absolute path from the processes cwd, as seen here https://github.com/bazelbuild/rules_nodejs/pull/1619/files#diff-5eb8729ae1c44d09b4ddc25c90585b9a this fixes the issue
🔬 Minimal Reproduction
🔥 Exception or Error
bazel-out/host/bin/external/npm/@angular/compiler-cli/bin/ngc.sh --project libs/ng-lib/tsconfig.json --outDir bazel-out/k8-fastbuild/bin/libs/ng-lib --rootDir libs/ng-lib --declarationDir
Error: Internal Error: absoluteFrom(libs/ng-lib): path is not absolute
at Object.absoluteFrom (/home/fabian/.cache/bazel/_bazel_fabian/5e7b9b87f8c35ad8c8393b2c59738c12/execroot/build_bazel_rules_nodejs/_tmp/07c12d54970c8cddb1ddf80282a55151/_bazel_fabian/99d3dc50f0bae3830149c02defd9a6fa/sandbox/linux-sandbox/6/execroot/angular_bazel_architect/bazel-out/host/bin/external/npm/@angular/compiler-cli/bin/ngc.sh.runfiles/npm/node_modules/@angular/compiler-cli/src/ngtsc/file_system/src/helpers.js:29:19)
🌍 Your Environment
Angular Version:
@angular/[email protected]