[Debian-med-packaging] Bug#1105316: epcr: FTBFS with make --shuffle=reverse: fahash_lookup.cpp:30:10: fatal error: epcr/fahash.hpp: No such file or directory

[Lucas Nussbaum]

Source: epcr
Version: 2.3.12-1-10
Severity: minor
Tags: trixie sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-shuffle

Hi,

GNU Make now has a --shuffle option that simulates non-deterministic ordering
of target prerequisites. See
https://trofi.github.io/posts/238-new-make-shuffle-mode.html and also previous
work in Debian by Santiago Vila:
https://people.debian.org/~sanvila/make-shuffle/

This package fails to build with make --shuffle=reverse.
This is likely to be caused by a missing dependency in
debian/rules or an upstream Makefile.

More information about this mass bug filing is available at
https://wiki.debian.org/qa.debian.org/FTBFS/Shuffle

Relevant part (hopefully):
> g++ -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/epcr-2.3.12-1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -I. -g2 -DDEALLOCATE=0 -DVERSION=\"2.3.12-1\" -DVER_MAJOR=2 -DVER_MINOR=3 -DVER_BUILD=12 -DSTANDALONE=1 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/epcr-2.3.12-1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -I. -g2 -DDEALLOCATE=0 -DVERSION=\"2.3.12-1\" -DVER_MAJOR=2 -DVER_MINOR=3 -DVER_BUILD=12 -DSTANDALONE=1 -Wl,-z,relro -Wl,-z,now -L. -c fahash_lookup.cpp -o fahash_lookup.o
> cc1plus: warning: ‘-Werror=’ argument ‘-Werror=implicit-function-declaration’ is not valid for C++
> cc1plus: warning: ‘-Werror=’ argument ‘-Werror=implicit-function-declaration’ is not valid for C++
> fahash_lookup.cpp:30:10: fatal error: epcr/fahash.hpp: No such file or directory
>    30 | #include <epcr/fahash.hpp>
>       |          ^~~~~~~~~~~~~~~~~
> compilation terminated.
> make[3]: *** [stand/config.mk:107: fahash_lookup.o] Error 1 shuffle=reverse


The full build log is available from:
http://qa-logs.debian.net/2025/05/05/shuffle/reverse/epcr_2.3.12-1-10_unstable_reverse.log

If you reassign this bug to another package, please mark it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects