Bug 875203 – media-gfx/enblend-4.2.0_p20161007-r1 calls commands that do not exist: -DINSTALL_PDF_DOC=ON - -DINSTALL_HTML_DOC=ON

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description Agostino Sarubbo 2022-10-05 06:47:09 UTC]

https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: media-gfx/enblend-4.2.0_p20161007-r1 calls commands that do not exist.
Discovered on: amd64 (internal ref: lto_tinderbox)

NOTE:
This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing

Here is a bit of explanation:

-Werror=lto-type-mismatch:
User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO.
For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase.

-Werror=odr:
Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule.

-Werror=strict-aliasing:
Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO.

Workarounds:
- If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL).
- Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr).
- Fix it yourself if interested, of course (VALID FOR ALL).
- Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing).
- Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing).
- -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing).

See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2
Please look for 'command not found' and/or 'no such file or directory'.

[Comment 1 Agostino Sarubbo 2022-10-05 06:47:12 UTC]

Created attachment 820381 [details]
build.log

build log and emerge --info

[Comment 2 Agostino Sarubbo 2022-10-05 06:47:13 UTC]

Created attachment 820384 [details]
1-CMakeError.log

1-CMakeError.log

[Comment 3 Agostino Sarubbo 2022-10-05 06:47:15 UTC]

Created attachment 820387 [details]
1-CMakeOutput.log

1-CMakeOutput.log

[Comment 4 Agostino Sarubbo 2022-10-05 06:47:16 UTC]

Error(s) that match a know pattern in addition to what has been reported in the summary:


/var/tmp/portage/media-gfx/enblend-4.2.0_p20161007-r1/temp/environment: line 2309: -DINSTALL_HTML_DOC=ON: command not found
/var/tmp/portage/media-gfx/enblend-4.2.0_p20161007-r1/temp/environment: line 2310: -DINSTALL_PDF_DOC=ON: command not found
FAILED: doc/seam-line-visualization.eps /var/tmp/portage/media-gfx/enblend-4.2.0_p20161007-r1/work/enblend-4.2.0_p20161007_build/doc/seam-line-visualization.eps

[Comment 5 Larry the Git Cow 2022-11-17 16:15:19 UTC]

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b30c6342fd147e7b3629241ca168db29f7c5b825

commit b30c6342fd147e7b3629241ca168db29f7c5b825
Author:     John Helmert III <[e-mail]>
AuthorDate: 2022-11-17 16:08:53 +0000
Commit:     John Helmert III <[e-mail]>
CommitDate: 2022-11-17 16:14:30 +0000

    media-gfx/enblend: fix configure options called as commands
    
    Closes: https://bugs.gentoo.org/875206
    Closes: https://bugs.gentoo.org/875203
    Signed-off-by: John Helmert III <[e-mail]>

 media-gfx/enblend/enblend-4.2.0_p20161007-r1.ebuild | 6 ++++--
 media-gfx/enblend/enblend-4.2.0_p20161007-r2.ebuild | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)