This patch set expands support for the RUNTIME_PREFIX configuration flag, currently only used on Windows builds, to include Linux, Darwin, and FreeBSD. When Git is built with RUNTIME_PREFIX enabled, it resolves its ancillary paths relative to the runtime location of its executable rather than hard-coding them at compile-time, allowing a Git installation to be deployed to a path other than the one in which it was built/installed.
Note that RUNTIME_PREFIX is not currently used outside of Windows. This patch set should not have an impact on default Git builds. I'm dusting this back off now that avarab@'s Perl Makefile simplification patch set has landed. It's been a few months, so I'm a bit rusty, but I think that I've incorporated all of the feedback. Please take a look and let me know what you think! Previous threads: v1: https://public-inbox.org/git/20171116170523.28696-1-...@google.com/ v2: https://public-inbox.org/git/20171119173141.4896-1-...@google.com/ v3: https://public-inbox.org/git/20171127164055.93283-1-...@google.com/ v4: https://public-inbox.org/git/20171129223807.91343-1-...@google.com/ v5: https://public-inbox.org/git/20180108030239.92036-1-...@google.com/ Changes in v6 from v5: - Rebased on top of "master". - Updated commit messages. - Updated runtime prefix Perl header comment and code to clarify when and why FindBin is used. - With Johannes' blessing on Git-for-Windows, folded "RUNTIME_PREFIX_PERL" functionality into "RUNTIME_PREFIX". - Updated "run-command" test to accommodate RUNTIME_PREFIX trace messages. === Testing === The latest patch set is available for testing on my GitHub fork, including "travis.ci" testing. The "runtime-prefix" branch includes a "config.mak" commit that enables runtime prefix for the Travis build; the "runtime-prefix-no-config" omits this file, testing this patch without runtime prefix enabled: - https://github.com/danjacques/git/tree/runtime-prefix - https://github.com/danjacques/git/tree/runtime-prefix-no-config - https://travis-ci.org/danjacques/git/branches Built/tested locally using this "config.mak" w/ autoconf: === Example config.mak === ## (BEGIN config.mak) RUNTIME_PREFIX = YesPlease RUNTIME_PREFIX_PERL = YesPlease gitexecdir = libexec/git-core template_dir = share/git-core/templates sysconfdir = etc ## (END config.mak) === Revision History === Changes in v5 from v4: - Rebase on top of "next", notably incorporating the "ab/simplify-perl-makefile" branch. - Cleaner Makefile relative path enforcement. - Update Perl header template path now that the "perl/" directory has fewer build-related files in it. - Update Perl runtime prefix header to use a general system path resolution function. - Implemented the injection of the locale directory into Perl's "Git/I18N.pm" module from the runtime prefix Perl script header. - Updated Perl's "Git/I18N.pm" module to accept injected locale directory. - Added more content to some comments. Changes in v4 from v3: - Incorporated some quoting and Makefile dependency fixes, courtesy of <johannes.schinde...@gmx.de>. Changes in v3 from v2: - Broken into multiple patches now that Perl is isolated in its own RUNTIME_PREFIX_PERL flag. - Working with avarab@, several changes to Perl script runtime prefix support: - Moved Perl header body content from Makefile into external template file(s). - Added generic "perllibdir" variable to override Perl installation path. - RUNTIME_PREFIX_PERL generated script header is more descriptive and consistent with how the C version operates. - Fixed Generated Perl header Makefile dependency, should rebuild when dependent files and flags change. - Changed some of the new RUNTIME_PREFIX trace strings to use consistent formatting and terminology. Changes in v2 from v1: - Added comments and formatting to improve readability of platform-sepecific executable path resolution sleds in `git_get_exec_path`. - Consolidated "cached_exec_path" and "argv_exec_path" globals into "exec_path_value". - Use `strbuf_realpath` instead of `realpath` for procfs resolution. - Removed new environment variable exports. Git with RUNTIME_PREFIX no longer exports or consumes any additional environment information. - Updated Perl script resolution strategy: rather than having Git export the relative executable path to the Perl scripts, they now resolve it independently when RUNTIME_PREFIX_PERL is enabled. - Updated resolution strategy for "gettext()": use system_path() instead of special environment variable. - Added `sysctl` executable resolution support for BSDs that don't mount "procfs" by default (most of them). Dan Jacques (3): Makefile: generate Perl header from template file Makefile: add Perl runtime prefix support exec_cmd: RUNTIME_PREFIX on some POSIX systems .gitignore | 1 + Makefile | 120 +++++++++-- cache.h | 1 + common-main.c | 4 +- config.mak.uname | 7 + exec_cmd.c | 241 ++++++++++++++++++++--- exec_cmd.h | 4 +- gettext.c | 8 +- git.c | 2 +- perl/Git/I18N.pm | 2 +- perl/header_templates/fixed_prefix.template.pl | 1 + perl/header_templates/runtime_prefix.template.pl | 40 ++++ t/t0061-run-command.sh | 2 +- 13 files changed, 379 insertions(+), 54 deletions(-) create mode 100644 perl/header_templates/fixed_prefix.template.pl create mode 100644 perl/header_templates/runtime_prefix.template.pl -- 2.15.0.chromium12
