[core] Allow custom path for .rootrc instead of $HOME #20202
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ferdymercury
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Oct 26, 2025
core/base/src/TEnv.cxx
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| /// case the home directory resides on an auto-mounted remote file system | ||
| /// and one wants to avoid the file system from being mounted. | ||
| /// In case the environment variable ROOTENV_USER_PATH is specified, | ||
| /// `$ROOTENV_USER_PATH/<name>` is considered instead of `$HOME/<name>`. |
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| /// `$ROOTENV_USER_PATH/<name>` is considered instead of `$HOME/<name>`. | |
| /// and ROOTENV_NO_HOME is not set, then | |
| /// `$ROOTENV_USER_PATH/<name>` is considered instead of `$HOME/<name>`. | |
| /// If you prefer avoiding environment variables, in `.bash_aliases` you could define instead | |
| /// `alias root="root -e 'gEnv->ReadFile(\"/your/path/\", kEnvLocal);'"` | |
| /// or create a `rootlogon.C` script where you run this statement or create a custom TEnv object. |
core/base/src/TEnv.cxx
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| /// i.e.\ `$ROOTSYS/etc/system<name>` (or `ROOTETCDIR/system<name>`), | ||
| /// `$HOME/<name>` and `$PWD/<name>`. |
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| /// i.e.\ `$ROOTSYS/etc/system<name>` or `ROOTETCDIR/system<name>` (kEnvGlobal), | |
| /// `$HOME/<name>` or (kEnvUser), and `$PWD/<name>` (kEnvLocal). |
README/ReleaseNotes/v638/index.md
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| export CLING_CPPSYSINCL=$(LC_ALL=C c++ -xc++ -E -v /dev/null 2>&1 | sed -n '/^.include/,${/^ \/.*++/{p}}' | tr '\n' ':' | tr ' ' ':') | ||
| ``` | ||
| This caching reduces sub-process creation during initialization and can be useful when multiple ROOT instances or binaries linked to ROOT are executed (less system-calls, cleaner debugging). | ||
| * It is now possible to read a configuration file (a "rootrc file") at startup instead of the one in the home directory, by specifying its full path with the `ROOTENV_USER_PATH` environment variable. |
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| * It is now possible to read a configuration file (a "rootrc file") at startup instead of the one in the home directory, by specifying its full path with the `ROOTENV_USER_PATH` environment variable. | |
| * It is now possible to read a user configuration file (a "rootrc file") at startup in a custom path instead of the one in the home directory, by specifying its full path with the `ROOTENV_USER_PATH` environment variable. |
Test Results 22 files 22 suites 3d 16h 1m 58s ⏱️ Results for commit 6fe9cd6. ♻️ This comment has been updated with latest results. |
via environment variable ROOTENV_USER_PATH. Fixes root-project#20132
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Thanks for the comments. All integrated, almost as formulated. Last round of tests. |
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via environment variable ROOTENV_USER_PATH.
Fixes #20132