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Makefile: unexport TOPDIR to fix gnu-efi >= 3.0.18 build issue

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gnu-efi fails to build if TOPDIR is exported in the environment since the
move to version 3.0.18 in commit 9efeb7e914 ("package/gnu-efi: bump to
version 3.0.18").

The reason is the change in TOPDIR logic introduced by upstream commit
31913f8489 ("Make: make TOPDIR actually work and get rid of unused CDIR"):

31913f8489

export TOPDIR=foo; make gnu-efi
...
/path/to/buildroot/output-gnuefi/host/bin/aarch64-linux-ld: cannot find
 /path/to/buildroot/output-gnuefi/build/gnu-efi-4.0.0//apps/../aarch64/gnuefi/crt0-efi-aarch64.o:
 No such file or director
make[2]: *** [Makefile:89: apps] Error 2
make[1]: *** [package/pkg-generic.mk:273: /path/to/buildroot/output-gnuefi/build/gnu-efi-4.0.0/.stamp_built] Error 2
make: *** [Makefile:23: _all] Error 2

As a workaround, unexport TOPDIR like we do for other sensitive environment
variables.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
This commit is contained in:
Peter Korsgaard
2025-06-24 19:08:33 +02:00
committed by Julien Olivain
parent da04cfa26c
commit 2b5544ab7a
1 changed files with 1 additions and 0 deletions
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Makefile
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@@ -428,6 +428,7 @@ unexport QMAKESPEC
unexport RANLIB
unexport TAR_OPTIONS
unexport TERMINFO
unexport TOPDIR
GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)