Open xiedeacc opened 2 weeks ago
fmeum
commented
2 weeks ago If the rule supports Make variable expansion, you can use https://github.com/bazelbuild/bazel-skylib/blob/main/docs/common_settings_doc.md#string_flag-make_variable to achieve this.
xiedeacc
commented
2 weeks ago finally, I write a rule use ctx.var.get archive get variable from command line, but why cannot pass variable to BUILD file, it' seems silly to write a rule just substitute some value then to call another native cc_library
xiedeacc
commented
2 weeks ago If the rule supports Make variable expansion, you can use https://github.com/bazelbuild/bazel-skylib/blob/main/docs/common_settings_doc.md#string_flag-make_variable to achieve this.
after read the doc and example from https://github.com/bazelbuild/examples/blob/4d9f5e6c1332ac902a0798b634c67fda4ec5c43b/configurations/select_on_build_setting/BUILD , it seams Make variable cannot archieve it, under jemalloc private namespace scene, private namespace can be any name, but make varialble seams limit to value defined in config_setting, am I right? @fmeum
Description of the feature request:
when I write a bazel rule for jemalloc, and need support self define namespace, after googled a lot, I find this is impossible. so bazel should add mechanism to pass a variable to bazel rule, that mechanism may like config_setting
Which category does this issue belong to?
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What underlying problem are you trying to solve with this feature?
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Which operating system are you running Bazel on?
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What is the output of
bazel info release?No response
If
bazel info releasereturnsdevelopment versionor(@non-git), tell us how you built Bazel.No response
What's the output of
git remote get-url origin; git rev-parse HEAD?No response
Have you found anything relevant by searching the web?
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Any other information, logs, or outputs that you want to share?
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