70 FTBFS packages on arm64 without patch
gcc-snapshot_1:20260725-13h [B][L][T] 
halide_21.0.0-421d [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.1-1188d [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
hipblaslt_7.1.1+dfsg-432d [B][L][T] 
mayavi2_4.8.3-228d [B][L][T]#1118326 - mayavi2: FTBFS: Fatal Python error: Aborted
vagrant_2.3.7+git20230731.5fc64cde+dfsg-4188d [B][L][T]#1126086 - vagrant: FTBFS with Errors::BoxMetadataDownloadError
deal.ii_9.7.1-647d [B][L][T]#1125102 - deal.ii: FTBFS on arm64: collect2: fatal error: ld terminated with signal 6 [Aborted]
#1140247 - deal.ii: FTBFS: fatal: base/CMakeFiles/object_base_debug.dir/quadrature_lib.cc.o:(.debug_gdb_scripts): string is not null terminated
gtk3bindings_0.1.1-1104d [B][L][T] 
hippomocks_5.0-2468d [B][L][T]#888883 - hippomocks FTBFS on arm64/armhf/mips*: test failure
#1047975 - hippomocks: Fails to build source after successful build
odpic_5.6.4-169d [B][L][T]#1057936 - odpic: FTBFS: UndefinedError("'style' is undefined")
btas_1.0.0-1.1240d [B][L][T] 
gir2pas_0.1.1-114d [B][L][T] 
mrtrix3_3.0.8-246d [B][L][T]#1140261 - mrtrix3: FTBFS: core/math/stats/glm.cpp:185:34: error: invalid use of non-static member function 'Eigen::JacobiSVD::PlainObject> Eigen::MatrixBase::jacobiSvd(unsigned int) const [with Derived = Eigen::Matrix; typename Eigen::DenseBase::PlainObject = Eigen::Matrix]'
sonic-visualiser_5.2.1-2130d [B][L][T]#1131336 - sonic-visualiser: FTBFS with Qt 6.10
lua-struct_0.3-2287d [B][L][T] 
rdkit_202603.2-115d [B][L][T]#1136322 - rdkit: FTBFS with libeigen3-dev 5.0 (major version transition)
gvars3_0.0~git20220105194034.62f5a78-761d [B][L][T] 
rapmap_0.15.0+dfsg-5291d [B][L][T]#976588 - rapmap: FTBFS on arm64 (when trying to build arch:all)
rust-mach-o-sys_0.1.1-31633d [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-subversion_0.1.12-119d [B][L][T]#1103725 - rust-subversion: FTBFS on many archs: expected raw pointer *const u8, found *const i8
python-cx-oracle_8.3.0-316d [B][L][T]#1137169 - python-cx-oracle FTBFS: error: implicit declaration of function ‘dpiConn_beginDistribTrans’
rust-clipper2c-sys_0.2.0+dfsg-18d [B][L][T] 
sphde_1.4.0-5.1192d [B][L][T]#1048093 - sphde: Fails to build source after successful build
#1125773 - sphde: FTBFS on arm64: TERM after 150 minutes of inactivity
cpptraj_5.1.0+dfsg-5309d [B][L][T]#1035833 - cpptraj: FTBFS on \!amd64
#1091156 - cpptraj: FTBFS on arm64: make[2]: *** [Makefile:662: summary] Error 4
mpqc_2.3.1-22605d [B][L][T]#1049570 - mpqc: Fails to build binary packages again after successful build
#1075293 - mpqc: ftbfs with GCC-14
genimage_20-116d [B][L][T] 
iisignature_0.23+git20260603.447577b+ds-152d [B][L][T] 
libmaus2_2.0.813+ds-5293d [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*)'
simint_0.7-239d [B][L][T]#1140342 - simint: FTBFS almost everywhere
tinyarray_1.2.5-1216d [B][L][T]#1017051 - tinyarray: FTBFS on i386
guile-2.2_2.2.7+1-9189d [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_1:19.1.7-221d [B][L][T]#1142869 - llvm-toolchain-19: FTBFS: fatal error: 'linux/scc.h' file not found
bwa-mem2_2.3+ds-1157d [B][L][T] 
drawterm_20240821-0.1138d [B][L][T]#1126330 - drawterm: FTBFS on non x86: (cd posix-$arch && make) - "can't cd to posix-..."
pyemd_0.5.1.54.g802fa86-2608d [B][L][T]#1080277 - FTBFS with setuptools >= 72: error: invalid command 'test'
cypari2_2.1.4-1653d [B][L][T]#1081687 - Times out building on arm64
gpsshogi_0.7.0-3.3144d [B][L][T]#1110591 - gpsshogi ftbfs with boost1.88
#1128157 - gpsshogi: FTBFS with boost 1.90
llvm-toolchain-18_1:18.1.8-208d [B][L][T]#1105474 - llvm-toolchain-18: FTBFS with make --shuffle=reverse: /bin/sh: 4: --stats-format: not found
#1113236 - llvm-toolchain-18: FTBFS with CMake 4
coq-simple-io_1.11.0-134d [B][L][T]#1139503 - coq-simple-io: FTBFS: Error: Can't find file coqsimpleio_plugin.cmxs on loadpath.
libhdate_1.6.02-2.14d [B][L][T]#1045497 - libhdate: Fails to build source after successful build
#1102875 - libhdate: add perl-xs-dev to Build-Depends
selinux-python_3.11-116d [B][L][T]#1141881 - selinux-python FTBFS: /usr/bin/python3: No module named build
xemacs21_21.4.24-12558d [B][L][T]#1075659 - xemacs21: ftbfs with GCC-14
aj-snapshot_0.9.9-4123d [B][L][T]#1093685 - aj-snapshot: FTBFS with mxml 4.0.3
anytun_0.3.8-1.1145d [B][L][T]#1127165 - anytun: libboost-system-dev package is obsolete with boost 1.89 and newer
broker_1.4.0+ds1-1514d [B][L][T]#1037597 - broker: ftbfs with GCC-13
#1112758 - broker: FTBFS with CMake 4
frama-c_20220511-manganese-5212d [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)
gnucap-python_0.0.2-1.2546d [B][L][T]#1067335 - gnucap-python: FTBFS: _gnucap_swig.cxx:4535:10: fatal error: numpy/arrayobject.h: No such file or directory
gpyfft_0.7.1-330d [B][L][T]#1120241 - gpyfft: FTBFS: AttributeError: module 'gpyfft.gpyfftlib' has no attribute 'CLFFT_DOUBLE'
libomemo_0.8.1-3123d [B][L][T]#1131332 - libomemo: FTBFS with mxml 4
libpreludedb_5.2.0-2.227d [B][L][T]#1047160 - libpreludedb: Fails to build source after successful build
#1049794 - libpreludedb: Fails to build binary packages again after successful build
#1080884 - libpreludedb: Missing Build-Depends on python3-setuptools
libpwiz_3.0.18342-4.2144d [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_0.5.8-7343d [B][L][T]#1106642 - libvirt-php ftbfs with libxml 2.14.x from experimental
linphone_5.3.105-698d [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]'
openstructure_2.11.1-329d [B][L][T]#976491 - openstructure: FTBFS on arm64: E: Build killed with signal TERM after 150 minutes of inactivity
#1129279 - openstructure: FTBFS with Python 3.14: tests segfault
python-cython-blis_1.0.0-230d [B][L][T]#1097676 - python-cython-blis: ftbfs with GCC-15
python-escript_5.6-1021d [B][L][T] 
python-lua_1.0-130d [B][L][T]#1114309 - python-lua: FTBFS: module.h:94:13: error: 'bool' cannot be defined via 'typedef'
python-nss_1.0.1-230d [B][L][T]#1045451 - python-nss: Fails to build source after successful build
#1080757 - python-nss: Missing Build-Depends on python3-setuptools
s2geometry_0.10.0-6.1813d [B][L][T]#1059228 - build system hard-codes -std=c++11
scram_0.16.2-4144d [B][L][T]#1129858 - scram: FTBFS with boost 1.90
sdml_0.3.2+20250310-730d [B][L][T]#1140282 - sdml: FTBFS: error: failed to select a version for the requirement `tree-sitter = "^0.25"`
siconos_4.4.0+dfsg-619d [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.
simgrid_4.1-230d [B][L][T]#1140533 - simgrid FTBFS with ns3 3.48
solarpowerlog_0.26-1144d [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+git20220507.32e0517-6240d [B][L][T]#1119033 - stdgpu: FTBFS with libamdhip64-dev 6.4.3
swift-im_5.0~alpha2.145.g12d031cf8+dfsg-5145d [B][L][T]#1127287 - swift-im: libboost-system-dev package is obsolete with boost 1.89 and newer
tiledarray_1.0.0-1322d [B][L][T]#1087560 - tiledarray: FTBFS: missing cstdint include
tulip_6.0.1+dfsg-329d [B][L][T]#793137 - tulip: FTBFS on armel and armhf
#1127042 - tulip: FTBFS with Python 3.14
vera++_1.3.0-330d [B][L][T]#1140903 - vera++: FTBFS with Python 3.14
xpra_3.1.5+dfsg1-0.2310d [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]
4 FTBFS packages on arm64 with a patch pending
libgrokj2k_10.0.5-14d [B][L][T]#1085165 - libgrokj2k: FTBFS on armhf: ‘vreinterpret_f16_u16’ was not declared in this scope
libprelude_5.2.0-5.64d [B][L][T]#1081473 - FTBFS with Python 3.13
mecab_0.996-163d [B][L][T]#1142723 - mecab: FTBFS: /usr/lib/ruby/vendor_ruby/gem2deb/metadata.rb:135:in `load_gemspec': E: cannot load gemspec mecab-ruby.gemspec (RuntimeError)
mumble_1.5.857-169d [B][L][T]#1138349 - mumble: FTBFS with openssl 4.0