65 FTBFS packages on arm64 without patch
eclib_20260707-241d [B][L][T] 
halide_21.0.0-410d [B][L][T]#1087943 - halide: FTBFS on arm64 with SVE: Unhandled exception: Error: For SVE/SVE2 support, target_vector_bits= must be set in target
#1103553 - halide: FTBFS: The following tests FAILED: 345 - correctness_tiled_matmul (ILLEGAL) correctness
#1141233 - halide: FTBFS on arm64: test_halide_blas fails
ircd-hybrid_1:8.2.46+dfsg.1-1236d [B][L][T]#1047078 - ircd-hybrid: Fails to build source after successful build
#1106955 - ircd-hybrid: add libcrypt-dev to Build-Depends
#1126097 - ircd-hybrid: FTBFS due to missing build-dependency on libcrypt-dev
deal.ii_9.7.1-78d [B][L][T]#1125102 - deal.ii: FTBFS on arm64: collect2: fatal error: ld terminated with signal 6 [Aborted]
hipblaslt_7.1.1+dfsg-479d [B][L][T] 
vagrant_2.3.7+git20230731.5fc64cde+dfsg-4235d [B][L][T]#1126086 - vagrant: FTBFS with Errors::BoxMetadataDownloadError
hippomocks_5.0-2515d [B][L][T]#888883 - hippomocks FTBFS on arm64/armhf/mips*: test failure
#1047975 - hippomocks: Fails to build source after successful build
gir2pas_0.1.1-161d [B][L][T] 
gtk3bindings_0.1.1-1152d [B][L][T] 
r-bioc-dropletutils_1.26.0+ds-31d [B][L][T] 
lua-struct_0.3-2334d [B][L][T] 
rust-subversion_0.1.12-167d [B][L][T]#1103725 - rust-subversion: FTBFS on many archs: expected raw pointer *const u8, found *const i8
gvars3_0.0~git20220105194034.62f5a78-7109d [B][L][T] 
rapmap_0.15.0+dfsg-5339d [B][L][T]#976588 - rapmap: FTBFS on arm64 (when trying to build arch:all)
cosign_3.1.1-11d [B][L][T] 
lammps_20260211+dfsg1-13d [B][L][T]#1145187 - lammps: FTBFS: E: Build killed with signal TERM after 150 minutes of inactivity
openstructure_2.12.0-14d [B][L][T]#976491 - openstructure: FTBFS on arm64: E: Build killed with signal TERM after 150 minutes of inactivity
rust-mach-o-sys_0.1.1-31680d [B][L][T]#953285 - rust-mach-o-sys fails on architectures with unsigned char
#976484 - rust-mach-o-sys: unsigned values cannot be negated
rust-snphost_0.7.0-12d [B][L][T] 
sphde_1.4.0-5.1239d [B][L][T]#1048093 - sphde: Fails to build source after successful build
#1125773 - sphde: FTBFS on arm64: TERM after 150 minutes of inactivity
ifcopenshell_0.8.1+dfsg1-73d [B][L][T] 
ufo-filters_0.17.0.76.g691aa0e+dfsg1-238d [B][L][T]#1113596 - ufo-filters: FTBFS with CMake 4
cpptraj_5.1.0+dfsg-5356d [B][L][T]#1035833 - cpptraj: FTBFS on \!amd64
#1091156 - cpptraj: FTBFS on arm64: make[2]: *** [Makefile:662: summary] Error 4
libmaus2_2.0.813+ds-639d [B][L][T]#934619 - libmaus2 FTBFS (mostly 32bit): error: no matching function for call
#1069691 - libmaus2: FTBFS on arm64: what(): AutoArray failed to allocate 1398102 elements (11184816 bytes)
#1091144 - libmaus2: ftbfs on arm64 prevents building biobambam2
#1091568 - libmaus2: FTBFS on i386: ld: ./.libs/libmaus2.so: undefined reference to `libmaus2::posix::PosixFunctions::fstatSizeAndMode(int, long long&, unsigned char*)'
mpqc_2.3.1-22653d [B][L][T]#1049570 - mpqc: Fails to build binary packages again after successful build
#1075293 - mpqc: ftbfs with GCC-14
uncalled_2.3+ds-329d [B][L][T]#1144002 - uncalled: FTBFS: /usr/bin/x86_64-linux-gnu-ld.bfd: cannot find -lhdf5: No such file or directory
genimage_20-163d [B][L][T] 
iisignature_0.23+git20260603.447577b+ds-1100d [B][L][T] 
python-pymavlink_2.4.49-11d [B][L][T] 
simint_0.7-286d [B][L][T]#1140342 - simint: FTBFS almost everywhere
guile-2.2_2.2.7+1-9236d [B][L][T]#1102305 - guile-2.2: FTBFS: flaky tests
#1105419 - guile-2.2: FTBFS with make --shuffle=reverse: make[1]: *** [debian/rules:259: override_dh_install-arch] Error 1 shuffle=reverse
llvm-toolchain-19_1:19.1.7-2248d [B][L][T]#1142869 - llvm-toolchain-19: FTBFS: fatal error: 'linux/scc.h' file not found
bwa-mem2_2.3+ds-1204d [B][L][T] 
drawterm_20240821-0.1186d [B][L][T]#1126330 - drawterm: FTBFS on non x86: (cd posix-$arch && make) - "can't cd to posix-..."
pyemd_0.5.1.54.g802fa86-2656d [B][L][T]#1080277 - FTBFS with setuptools >= 72: error: invalid command 'test'
dmrgpp_6.06-238d [B][L][T]#1096531 - dmrgpp: ftbfs with GCC-15
python-gammu_3.2.4-410d [B][L][T]#1146036 - python-gammu: FTBFS: ERROR: test_inject (test.test_smsd.SMSDDummyTest.test_inject)
freehsm-c_2.0.0-19d [B][L][T]#1144631 - freehsm-c FTBFS on non-x86: cc1: error: ‘-fcf-protection=full’ is not supported for this target
libhdate_1.6.02-2.152d [B][L][T]#1045497 - libhdate: Fails to build source after successful build
#1102875 - libhdate: add perl-xs-dev to Build-Depends
xemacs21_21.4.24-12605d [B][L][T]#1075659 - xemacs21: ftbfs with GCC-14
aj-snapshot_0.9.9-4171d [B][L][T]#1093685 - aj-snapshot: FTBFS with mxml 4.0.3
anytun_0.3.8-1.1192d [B][L][T]#1127165 - anytun: libboost-system-dev package is obsolete with boost 1.89 and newer
coq-corn_8.20.0-133d [B][L][T]#1143292 - coq-corn: FTBFS: dh_auto_build: error: make -j2 INSTALL="install --strip-program=true" returned exit code 2
coq-relation-algebra_1.7.11-132d [B][L][T]#1143295 - coq-relation-algebra: FTBFS: findlib error: coq-core.plugins.ltac not found in:
frama-c_20220511-manganese-5259d [B][L][T]#1044539 - frama-c: Fails to build source after successful build
#1093102 - frama-c: FTBFS with OCaml 5.3.0 (syntax error due to new "effect" keyword)
libomemo_0.8.1-3171d [B][L][T]#1131332 - libomemo: FTBFS with mxml 4
libpwiz_3.0.18342-4.2192d [B][L][T]#1110624 - libpwiz ftbfs with boost 1.88
#1127228 - libpwiz: libboost-system-dev package is obsolete with boost 1.89 and newer
libvirt-php_0.5.8-7391d [B][L][T]#1106642 - libvirt-php ftbfs with libxml 2.14.x from experimental
linphone_5.3.105-6145d [B][L][T]#1119745 - linphone: FTBFS: /<>/src/db/main-db.cpp:1530:58: error: use of deleted function 'soci::details::use_container soci::use(T&&, const std::string&) [with T = long long int; std::string = std::__cxx11::basic_string]'
nlopt_2.7.1-7.110d [B][L][T] 
octave-video_2.1.3-37d [B][L][T]#1115036 - octave-video: FTBFS with ffmpeg 8.0
#1132464 - octave-video: prevents upgrade of octave and related packages
openms_2.6.0+cleaned1-638d [B][L][T]#1133596 - openms: ftbfs with GCC-16
#1136312 - openms: FTBFS with libeigen3-dev 5.0 (major version transition)
python-backports.zstd_1.7.0+ds-210d [B][L][T] 
python-escript_5.6-1010d [B][L][T] 
safe-hole-perl_0.14-1.121d [B][L][T] 
scram_0.16.2-4191d [B][L][T]#1129858 - scram: FTBFS with boost 1.90
sdml_0.3.2+20250310-777d [B][L][T]#1140282 - sdml: FTBFS: error: failed to select a version for the requirement `tree-sitter = "^0.25"`
siconos_4.4.0+dfsg-667d [B][L][T]#1020544 - siconos: FTBFS on s390x: Cholesky solve kNM_test failed
#1046177 - siconos: Fails to build source after successful build
#1136873 - siconos: FTBFS: E ValueError: setting an array element with a sequence.
#1146238 - siconos: FTBFS with swig 4.5.0
silver-platter_0.8.3-341d [B][L][T] 
solarpowerlog_0.26-1192d [B][L][T]#1110665 - solarpowerlog ftbfs with boost 1.88
#1127284 - solarpowerlog: libboost-system-dev package is obsolete with boost 1.89 and newer
stdgpu_1.3.0+git20220507.32e0517-6287d [B][L][T]#1119033 - stdgpu: FTBFS with libamdhip64-dev 6.4.3
swift-im_5.0~alpha2.145.g12d031cf8+dfsg-5192d [B][L][T]#1127287 - swift-im: libboost-system-dev package is obsolete with boost 1.89 and newer
tiledarray_1.0.0-1369d [B][L][T]#1087560 - tiledarray: FTBFS: missing cstdint include
xpra_3.1.5+dfsg1-0.2357d [B][L][T]#1067627 - FTBFS: error: comparison of integer expressions of different signedness: ‘long unsigned int’ and ‘long int’
#1072463 - xpra: FTBFS with ffmpeg 7.0: xpra/codecs/enc_ffmpeg/encoder.c:11208:115: error: passing argument 6 of ‘avio_alloc_context’ from incompatible pointer type [-Werror=incompatible-pointer-types]
lightningcss_1.33.0+ds-513d [B][L][T]#1146269 - lightningcss: FTBFS: error[E0308]: mismatched types
14 FTBFS packages on arm64 with a patch pending
gnucap-python_0.0.2-1.2593d [B][L][T]#1067335 - gnucap-python: FTBFS: _gnucap_swig.cxx:4535:10: fatal error: numpy/arrayobject.h: No such file or directory
gpyfft_0.7.1-378d [B][L][T]#1120241 - gpyfft: FTBFS: AttributeError: module 'gpyfft.gpyfftlib' has no attribute 'CLFFT_DOUBLE'
libgrokj2k_10.0.5-152d [B][L][T]#1085165 - libgrokj2k: FTBFS on armhf: ‘vreinterpret_f16_u16’ was not declared in this scope
libprelude_5.2.0-5.652d [B][L][T]#1080647 - Missing Build-Depends on python3-setuptools
libselinux_3.11-210d [B][L][T]#1145457 - libselinux: FTBFS: selinuxswig_python_wrap.c:6646:34: error: implicit declaration of function 'PyString_FromString'; did you mean 'PyLong_FromString'? [-Wimplicit-function-declaration]
llvm-toolchain-18_1:18.1.8-2055d [B][L][T]#1147122 - llvm-toolchain-18: FTBFS against python 3.15rc2 and other problems
opendht_3.0.1-1.110d [B][L][T]#1138404 - opendht: FTBFS with openssl 4.0
#1146596 - opendht: FTBFS against python 3.15rc1
pandas_2.3.3+dfsg-39d [B][L][T]#1144864 - pandas: FTBFS building against python 3.15
python-cx-oracle_8.3.0-310d [B][L][T]#1137169 - python-cx-oracle FTBFS: error: implicit declaration of function ‘dpiConn_beginDistribTrans’
python-cython-blis_1.0.0-278d [B][L][T]#1097676 - python-cython-blis: ftbfs with GCC-15
python-lua_1.0-110d [B][L][T]#1114309 - python-lua: FTBFS: module.h:94:13: error: 'bool' cannot be defined via 'typedef'
r-cran-hdf5r_1.3.12+dfsg-338d [B][L][T]#1139545 - r-cran-hdf5r: FTBFS against HDF5 2.1.0 - implicit declaration of function ‘H5FD_family_init’
s2geometry_0.10.0-6.1860d [B][L][T]#1146589 - s2geometry: FTBFS against python 3.14 and 3.15rc1
tinyarray_1.2.5-1264d [B][L][T]#1146590 - tinyarray: FTBFS on arm64