96 FTBFS packages on riscv64 without patch
coq_9.2.0+dfsg-23d [B][L][T] 
icann-rdap-cli_0.0.30-34d [B][L][T] 
icann-rdap-srv_0.0.30-34d [B][L][T] 
octave-level-set_0.3.1~git.2019.04.13-85d [B][L][T] 
python-ptrace_0.9.9-0.35d [B][L][T]#1087588 - python-ptrace: FTBFS on riscv64: OverflowError: Python int too large to convert to C long
xtrs_4.9d-3161d [B][L][T] 
delve_1.27.0-113d [B][L][T] 
octave-mapping_1.4.3-25d [B][L][T] 
opensnitch_1.6.9-413d [B][L][T]#1108846 - opensnitch: fix loongarch/riscv build
dav2d_0.0.1-178d [B][L][T] 
deal.ii_9.7.1-636d [B][L][T]#1140247 - deal.ii: FTBFS: fatal: base/CMakeFiles/object_base_debug.dir/quadrature_lib.cc.o:(.debug_gdb_scripts): string is not null terminated
parmed_4.3.1+dfsg-1187d [B][L][T] 
rust-jemalloc-sys_0.3.2-2.1465d [B][L][T]#1018724 - rust-jemalloc-sys FTBFS on riscv64(gc)
udev-hid-bpf_2.3.0.20260703.4.gef5fbe3-15d [B][L][T] 
btas_1.0.0-1.170d [B][L][T] 
libembperl-perl_2.5.0-17465d [B][L][T]#1042845 - libembperl-perl: FTBFS with Perl 5.38: test failures
#1137057 - libembperl-perl: FTBFS in bookworm
numba_0.65.1+dfsg-354d [B][L][T] 
tiny_0.13.0-256d [B][L][T] 
vg_1.59.0+ds-0.1465d [B][L][T]#976511 - vg: FTBFS on arm64: configure: error: Could not find a version of the library!
#1089275 - vg: FTBFS with make 4.4.1
#1113618 - vg: FTBFS with CMake 4
coq-elpi_2.5.0-1.23d [B][L][T]#1044251 - coq-elpi: Fails to build source after successful build
lua-struct_0.3-2285d [B][L][T] 
lua-vips_1.1.12-2465d [B][L][T]#1073143 - lua-vips: Bus error in lua jit during tests
rdkit_202603.2-177d [B][L][T]#1136322 - rdkit: FTBFS with libeigen3-dev 5.0 (major version transition)
zsv_1.3.0-4137d [B][L][T] 
lomiri-location-service_3.4.1-296d [B][L][T] 
ovito_3.15.4~ds-180d [B][L][T]#1141106 - ovito: FTBFS due to using deprecated Qt6 build dependencies
rapmap_0.15.0+dfsg-5289d [B][L][T]#976588 - rapmap: FTBFS on arm64 (when trying to build arch:all)
flexpart_11.1-214d [B][L][T]#1105361 - flexpart: FTBFS with make --shuffle=reverse: Fatal Error: Cannot open module file 'par_mod.mod' for reading at (1): No such file or directory
rust-criterion-cycles-per-byte_0.6.1-1465d [B][L][T] 
rust-mach-o-sys_0.1.1-31085d [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_0.1.12-113d [B][L][T]#1103725 - rust-subversion: FTBFS on many archs: expected raw pointer *const u8, found *const i8
sccache_0.16.0+ds-15d [B][L][T]#1048427 - sccache: Fails to build source after successful build
#1138282 - sccache FTBFS: Unknown cache level: 'redis'
arduino-cli_1.5.1-113d [B][L][T] 
bpfilter_0.6.0-250d [B][L][T] 
golang-github-coreos-discovery-etcd-io_2.0.0+git2019.04.19.git.78fb45d3c9-480d [B][L][T] 
pyfftw_0.15.0-1.1465d [B][L][T]#917095 - python3-pyfftw: alignment tests fail on several arches
python-cx-oracle_8.3.0-313d [B][L][T]#1137169 - python-cx-oracle FTBFS: error: implicit declaration of function ‘dpiConn_beginDistribTrans’
rust-clipper2c-sys_0.2.0+dfsg-16d [B][L][T] 
rust-lv2-sys_2.0.0-1.1465d [B][L][T] 
aflplusplus_4.33c-1.29h [B][L][T]#1132061 - aflplusplus: ftbfs with GCC-16
clang-extract_0.0~git20260224.ac30d66-148d [B][L][T] 
hmmer_3.4+dfsg-3298d [B][L][T] 
lwip_2.2.1+dfsg1-69d [B][L][T] 
plotsauce_0~0.1-1325d [B][L][T]#1072135 - plotsauce: FTBFS: plotsauce.qbs:11:5 Dependency 'zlib' not found for product 'plotsauce'.
pocl_6.0-7315d [B][L][T]#1074261 - pocl: FTBFS on several arches due to failing tests
sphde_1.4.0-5.1465d [B][L][T]#1048093 - sphde: Fails to build source after successful build
#1125773 - sphde: FTBFS on arm64: TERM after 150 minutes of inactivity
rust-cee-scape_0.2.0-176d [B][L][T] 
cpptraj_5.1.0+dfsg-5307d [B][L][T]#1035833 - cpptraj: FTBFS on \!amd64
#1091156 - cpptraj: FTBFS on arm64: make[2]: *** [Makefile:662: summary] Error 4
mpqc_2.3.1-22603d [B][L][T]#1049570 - mpqc: Fails to build binary packages again after successful build
#1075293 - mpqc: ftbfs with GCC-14
abpoa_1.5.6-1150d [B][L][T] 
genimage_20-113d [B][L][T] 
iisignature_0.23+git20260603.447577b+ds-150d [B][L][T] 
simint_0.7-237d [B][L][T]#1140342 - simint: FTBFS almost everywhere
tinyarray_1.2.5-1213d [B][L][T]#1017051 - tinyarray: FTBFS on i386
guile-2.2_2.2.7+1-9186d [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
bwa-mem2_2.3+ds-1149d [B][L][T] 
drawterm_20240821-0.1136d [B][L][T]#1126330 - drawterm: FTBFS on non x86: (cd posix-$arch && make) - "can't cd to posix-..."
mecab_0.996-161d [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)
pyemd_0.5.1.54.g802fa86-2606d [B][L][T]#1080277 - FTBFS with setuptools >= 72: error: invalid command 'test'
rust-generator_0.7.1-1.1505d [B][L][T]#1003070 - rust-generator should not claim to build on "any" as upstream only supports amd64/arm64
cypari2_2.1.4-1651d [B][L][T]#1081687 - Times out building on arm64
gpsshogi_0.7.0-3.3141d [B][L][T]#1110591 - gpsshogi ftbfs with boost1.88
#1128157 - gpsshogi: FTBFS with boost 1.90
llvm-toolchain-18_1:18.1.8-206d [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_1.11.0-131d [B][L][T]#1139503 - coq-simple-io: FTBFS: Error: Can't find file coqsimpleio_plugin.cmxs on loadpath.
inspectrum_0.4.0-11d [B][L][T] 
libhdate_1.6.02-2.12d [B][L][T]#1045497 - libhdate: Fails to build source after successful build
#1102875 - libhdate: add perl-xs-dev to Build-Depends
selinux-python_3.11-113d [B][L][T]#1141881 - selinux-python FTBFS: /usr/bin/python3: No module named build
xemacs21_21.4.24-12555d [B][L][T]#1075659 - xemacs21: ftbfs with GCC-14
aj-snapshot_0.9.9-4132d [B][L][T]#1093685 - aj-snapshot: FTBFS with mxml 4.0.3
anytun_0.3.8-1.1142d [B][L][T]#1127165 - anytun: libboost-system-dev package is obsolete with boost 1.89 and newer
broker_1.4.0+ds1-1512d [B][L][T]#1037597 - broker: ftbfs with GCC-13
#1112758 - broker: FTBFS with CMake 4
frama-c_20220511-manganese-5210d [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_0.0.2-1.2544d [B][L][T]#1067335 - gnucap-python: FTBFS: _gnucap_swig.cxx:4535:10: fatal error: numpy/arrayobject.h: No such file or directory
gpyfft_0.7.1-3231d [B][L][T]#1120241 - gpyfft: FTBFS: AttributeError: module 'gpyfft.gpyfftlib' has no attribute 'CLFFT_DOUBLE'
libomemo_0.8.1-3132d [B][L][T]#1131332 - libomemo: FTBFS with mxml 4
libpreludedb_5.2.0-2.224d [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_3.0.18342-4.2142d [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_0.5.8-7341d [B][L][T]#1106642 - libvirt-php ftbfs with libxml 2.14.x from experimental
linphone_5.3.105-695d [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_2.11.1-326d [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_1.0.0-228d [B][L][T]#1097676 - python-cython-blis: ftbfs with GCC-15
python-escript_5.6-1018d [B][L][T] 
python-lua_1.0-127d [B][L][T]#1114309 - python-lua: FTBFS: module.h:94:13: error: 'bool' cannot be defined via 'typedef'
python-nss_1.0.1-227d [B][L][T]#1045451 - python-nss: Fails to build source after successful build
#1080757 - python-nss: Missing Build-Depends on python3-setuptools
s2geometry_0.10.0-6.1810d [B][L][T]#1059228 - build system hard-codes -std=c++11
scram_0.16.2-4142d [B][L][T]#1129858 - scram: FTBFS with boost 1.90
sdml_0.3.2+20250310-727d [B][L][T]#1140282 - sdml: FTBFS: error: failed to select a version for the requirement `tree-sitter = "^0.25"`
siconos_4.4.0+dfsg-617d [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_4.1-228d [B][L][T]#1140533 - simgrid FTBFS with ns3 3.48
solarpowerlog_0.26-1142d [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+git20220507.32e0517-6237d [B][L][T]#1119033 - stdgpu: FTBFS with libamdhip64-dev 6.4.3
swift-im_5.0~alpha2.145.g12d031cf8+dfsg-5142d [B][L][T]#1127287 - swift-im: libboost-system-dev package is obsolete with boost 1.89 and newer
tiledarray_1.0.0-1319d [B][L][T]#1087560 - tiledarray: FTBFS: missing cstdint include
tulip_6.0.1+dfsg-327d [B][L][T]#793137 - tulip: FTBFS on armel and armhf
#1127042 - tulip: FTBFS with Python 3.14
vera++_1.3.0-327d [B][L][T]#1140903 - vera++: FTBFS with Python 3.14
xpra_3.1.5+dfsg1-0.2308d [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]
9 FTBFS packages on riscv64 with a patch pending
epics-base_7.0.8.1+dfsg1-1085d [B][L][T]#1079604 - epics-base:FTBFS:build failure (not support riscv64)
firefox_152.0.6-110d [B][L][T]#1035947 - fresh build from git fails with cannot access local variable 'new_file'
#1056316 - firefox: please add gles support for riscv64
libgrokj2k_10.0.5-12d [B][L][T]#1085165 - libgrokj2k: FTBFS on armhf: ‘vreinterpret_f16_u16’ was not declared in this scope
libprelude_5.2.0-5.62d [B][L][T]#1081473 - FTBFS with Python 3.13
mono_6.14.1+ds2-379d [B][L][T]#1045158 - mono: Fails to build source after successful build
mumble_1.5.857-167d [B][L][T]#1138349 - mumble: FTBFS with openssl 4.0
pixmap_2.6.6-1889d [B][L][T]#1054698 - pixmap: FTBFS: ././Pixmap.c:1145:(.text+0xe631): undefined reference to `xpmReadRgbNames'
scrollz_2.2.3-2856d [B][L][T]#1066483 - scrollz: FTBFS: configure: error: Fatal: You must get working getaddrinfo() function.
vkd3d_2.0+ds-19d [B][L][T]#1142192 - vkd3d: FTBFS on ppc64el: multiple failures in tests/d3d12
#1142193 - vkd3d: FTBFS on armhf: Assembler messages: Error: unrecognized symbol type ""