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 for submit@bugs.debian.org; Fri, 15 May 2026 18:09:42 +0000
From: Santiago Vila &lt;sanvila@debian.org&gt;
To: Debian BTS &lt;submit@bugs.debian.org&gt;
Subject: apertium: FTBFS: /usr/include/lttoolbox/compression.h:26:10: fatal
 error: boost/endian/conversion.hpp: No such file or directory
X-Debbugs-Cc: sanvila@debian.org
Message-Id: &lt;E1wNwyk-005yCk-0b@paradis.debian.org&gt;
Date: Fri, 15 May 2026 18:09:42 +0000
Delivered-To: submit@bugs.debian.org

Package: src:apertium
Version: 3.9.12-2
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202605/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:apertium, so that this is still
visible in the BTS web page for this package.

Thanks.

--------------------------------------------------------------------------------
[...]
 debian/rules clean
dh clean
   dh_clean
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
autoreconf: export WARNINGS=
autoreconf: Entering directory '.'
autoreconf: configure.ac: no obvious need to run autopoint
autoreconf: running: aclocal --force -I m4
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy --force
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
autoreconf: configure.ac: not using Intltool
autoreconf: configure.ac: not using Gtkdoc
autoreconf: configure.ac: no need to run autopoint (confirmed)
autoreconf: running: aclocal --force -I m4
autoreconf: running: /usr/bin/autoconf --force
configure.ac:11: warning: The macro 'AC_CONFIG_HEADER' is obsolete.
configure.ac:11: You should run autoupdate.
./lib/autoconf/status.m4:719: AC_CONFIG_HEADER is expanded from...
configure.ac:11: the top level
configure.ac:24: warning: The macro 'AC_PROG_LIBTOOL' is obsolete.
configure.ac:24: You should run autoupdate.
m4/libtool.m4:100: AC_PROG_LIBTOOL is expanded from...
configure.ac:24: the top level
configure.ac:25: warning: The macro 'AC_LANG_CPLUSPLUS' is obsolete.
configure.ac:25: You should run autoupdate.
./lib/autoconf/c.m4:271: AC_LANG_CPLUSPLUS is expanded from...
configure.ac:25: the top level
configure.ac:79: warning: The macro 'AC_HEADER_STDC' is obsolete.
configure.ac:79: You should run autoupdate.
./lib/autoconf/headers.m4:664: AC_HEADER_STDC is expanded from...
configure.ac:79: the top level
configure.ac:133: warning: AC_OUTPUT should be used without arguments.
configure.ac:133: You should run autoupdate.
autoreconf: running: /usr/bin/autoheader --force
autoreconf: running: automake --add-missing --copy --force-missing
configure.ac:24: installing './compile'
configure.ac:24: installing './config.guess'
configure.ac:24: installing './config.sub'
configure.ac:20: installing './install-sh'
configure.ac:20: installing './missing'
Makefile.am: installing './INSTALL'
apertium/Makefile.am: installing './depcomp'
python/Makefile.am:5: warning: '%'-style pattern rules are a GNU make extension
parallel-tests: installing './test-driver'
autoreconf: configure.ac: not running make: --make not given
autoreconf: Leaving directory '.'
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;'
dh_auto_configure -- --disable-static --enable-python-bindings 'PYTHON_INSTALL_PARAMS=--no-compile --prefix /usr --install-layout deb --root /&lt;&lt;PKGBUILDDIR&gt;&gt;/debian/tmp'
	./configure --build=x86_64-linux-gnu --prefix=/usr --includedir=\${prefix}/include --mandir=\${prefix}/share/man --infodir=\${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --disable-option-checking --disable-silent-rules --libdir=\${prefix}/lib/x86_64-linux-gnu --runstatedir=/run --disable-maintainer-mode --disable-dependency-tracking --disable-static --enable-python-bindings PYTHON_INSTALL_PARAMS=&quot;--no-compile --prefix /usr --install-layout deb --root /&lt;&lt;PKGBUILDDIR&gt;&gt;/debian/tmp&quot;
checking for a BSD-compatible install... /usr/bin/install -c
checking whether sleep supports fractional seconds... yes
checking filesystem timestamp resolution... 0.01
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking xargs -n works... yes
checking whether UID '999' is supported by ustar format... yes
checking whether GID '999' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking for g++... g++
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C++... yes
checking whether g++ accepts -g... yes
checking whether make supports the include directive... yes (GNU style)
checking dependency style of g++... none
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking how to print strings... printf
checking for gcc... gcc
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C23 features... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... none
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /usr/bin/x86_64-linux-gnu-ld
checking if the linker (/usr/bin/x86_64-linux-gnu-ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking how to convert x86_64-pc-linux-gnu file names to x86_64-pc-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-pc-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/x86_64-linux-gnu-ld option to reload object files... -r
checking for file... file
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ranlib... ranlib
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/x86_64-linux-gnu-ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/bin/x86_64-linux-gnu-ld -m elf_x86_64
checking if the linker (/usr/bin/x86_64-linux-gnu-ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/usr/bin/x86_64-linux-gnu-ld -m elf_x86_64) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/bin/x86_64-linux-gnu-ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking for xmllint... /usr/bin/xmllint
checking for xsltproc... /usr/bin/xsltproc
checking for flex... /usr/bin/flex
checking for strcasecmp... yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for lttoolbox &gt;= 3.7.2... yes
checking for libxml-2.0 &gt;= 2.6.17... yes
checking for icu-i18n, icu-io, icu-uc... yes
checking whether byte ordering is bigendian... no
checking for egrep... (cached) /usr/bin/grep -E
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for unistd.h... (cached) yes
checking for stddef.h... yes
checking for filesystem... yes
checking for string_view... yes
checking for _ZNSt12experimental10filesystem2v112current_pathEv in -lstdc++fs... yes
checking for utf8cpp/utf8.h... yes
checking for g++ options to detect undeclared functions... none needed
checking for g++ options to ignore future-version functions... none needed
checking whether fread_unlocked is declared... yes
checking whether fwrite_unlocked is declared... yes
checking whether fgetc_unlocked is declared... yes
checking whether fputc_unlocked is declared... yes
checking whether fputs_unlocked is declared... yes
checking whether getopt is declared... yes
checking whether getopt_long is declared... no
checking for setlocale... yes
checking for strdup... yes
checking for getopt... yes
checking for snprintf... yes
checking for getopt_long... yes
checking whether C++ compiler accepts -std=c++23... yes
checking for a Python interpreter with version &gt;= 3.4... python3
checking for python3... /usr/bin/python3
checking for python3 version... 3.13
checking for python3 platform... linux
checking for GNU default python3 prefix... ${prefix}
checking for GNU default python3 exec_prefix... ${exec_prefix}
checking for python3 script directory (pythondir)... ${PYTHON_PREFIX}/lib/python3.13/site-packages
checking for python3 extension module directory (pyexecdir)... ${PYTHON_EXEC_PREFIX}/lib/python3.13/site-packages
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating python/setup.py
config.status: creating Makefile
config.status: creating apertium.pc
config.status: creating apertium/Makefile
config.status: creating scripts/Makefile
config.status: creating tests/Makefile
config.status: creating tests/tagger/Makefile
config.status: creating python/Makefile
config.status: creating apertium/apertium_config.h
config.status: executing depfiles commands
config.status: executing libtool commands
make[1]: Leaving directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;'
   dh_auto_build
	make -j2
make[1]: Entering directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;'
Making all in apertium
make[2]: Entering directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;/apertium'
make  all-am
make[3]: Entering directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;/apertium'
g++ -DHAVE_CONFIG_H -I.  -I..   -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2  -I/usr/include/libxml2   -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c -o apertium_cleanstream.o apertium_cleanstream.cc
/bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I.  -I..   -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2  -I/usr/include/libxml2   -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c -o a.lo a.cc
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2 -I/usr/include/libxml2 -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c a.cc  -fPIC -DPIC -o .libs/a.o
/bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I.  -I..   -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2  -I/usr/include/libxml2   -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c -o align.lo align.cc
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2 -I/usr/include/libxml2 -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c align.cc  -fPIC -DPIC -o .libs/align.o
/bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I.  -I..   -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2  -I/usr/include/libxml2   -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c -o analysis.lo analysis.cc
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2 -I/usr/include/libxml2 -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c analysis.cc  -fPIC -DPIC -o .libs/analysis.o
/bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I.  -I..   -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2  -I/usr/include/libxml2   -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c -o apertium_re.lo apertium_re.cc
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I/usr/include/utf8cpp/ -Wdate-time -D_FORTIFY_SOURCE=2 -I/usr/include/libxml2 -Wall -Wextra -g -O2 -ffile-prefix-map=/&lt;&lt;PKGBUILDDIR&gt;&gt;=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++23 -c apertium_re.cc  -fPIC -DPIC -o .libs/apertium_re.o
In file included from apertium_re.cc:18:
/usr/include/lttoolbox/compression.h:26:10: fatal error: boost/endian/conversion.hpp: No such file or directory
   26 | #include &lt;boost/endian/conversion.hpp&gt;
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[3]: *** [Makefile:1597: apertium_re.lo] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;/apertium'
make[2]: *** [Makefile:1057: all] Error 2
make[2]: Leaving directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;/apertium'
make[1]: *** [Makefile:496: all-recursive] Error 1
make[1]: Leaving directory '/&lt;&lt;PKGBUILDDIR&gt;&gt;'
dh_auto_build: error: make -j2 returned exit code 2
make: *** [debian/rules:13: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
--------------------------------------------------------------------------------
]