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| author | Masahiro Yamada <masahiroy@kernel.org> | 2023-08-01 14:19:25 +0200 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2023-08-07 18:08:54 +0200 |
| commit | 4b970e436523ed34da4ced74ad2b81e5a4f573f2 (patch) | |
| tree | 5ba272c6b19fb3f6c43c54fa862b481e1d1cca02 /scripts/Makefile.package | |
| parent | modpost: remove ElF_Rela variables from for-loop in section_rel(a) (diff) | |
| download | linux-4b970e436523ed34da4ced74ad2b81e5a4f573f2.tar.xz linux-4b970e436523ed34da4ced74ad2b81e5a4f573f2.zip | |
kbuild: deb-pkg: use Debian compliant shebang for debian/rules
Debian Policy "4.9. Main building script: debian/rules" requires
"debian/rules must start with the line #!/usr/bin/make -f". [1]
Currently, Kbuild does not follow this policy.
When Kbuild generates debian/rules, "#!$(command -v $MAKE) -f" is
expanded by shell. The resuling string may not be "#!/usr/bin/make -f".
There was a reason to opt out the Debian policy.
If you run '/path/to/my/custom/make deb-pkg', debian/rules must also be
invoked by the same Make program. If #!/usr/bin/make were hard-coded in
debian/rules, the sub-make would be executed by a possibly different
Make version.
This is problematic due to the MAKEFLAGS incompatibility, especially the
job server flag. Old Make versions used --jobserver-fds to propagate job
server file descriptors, but Make >= 4.2 uses --jobserver-auth. The flag
disagreement between the parent/child Makes would result in a process
fork explosion.
However, having a non-standard path in the shebang causes another issue;
the generated source package is not portable as such a path does not
exist in other build environments.
This commit solves those conflicting demands.
Hard-code '#!/usr/bin/make -f' in debian/rules to create a portable and
Debian-compliant source package.
Pass '--rules-file=$(MAKE) -f debian/rules' when dpkg-buildpackage is
invoked from Makefile so that debian/rules is executed by the same Make
program as used to start Kbuild.
[1] https://www.debian.org/doc/debian-policy/ch-source.html#main-building-script-debian-rules
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'scripts/Makefile.package')
| -rw-r--r-- | scripts/Makefile.package | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/Makefile.package b/scripts/Makefile.package index 85beab0363d7..f8a948ec2c6b 100644 --- a/scripts/Makefile.package +++ b/scripts/Makefile.package @@ -148,7 +148,7 @@ deb-pkg srcdeb-pkg bindeb-pkg: $(if $(findstring source, $(build-type)), \ --unsigned-source --compression=$(KDEB_SOURCE_COMPRESS)) \ $(if $(findstring binary, $(build-type)), \ - -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch), \ + --rules-file='$(MAKE) -f debian/rules' -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch), \ --no-check-builddeps) \ $(DPKG_FLAGS)) |