82 FTBFS packages on riscv64 without patch
delve_1.27.1-459d [B][L][T] 
gpaste_51.0-36d [B][L][T] 
octave-mapping_1.4.3-348d [B][L][T] 
pcapy-ng_2.1.0-31d [B][L][T] 
python-ptrace_0.9.9-0.3100d [B][L][T]#1087588 - python-ptrace: FTBFS on riscv64: OverflowError: Python int too large to convert to C long
xtrs_4.9d-448d [B][L][T] 
golang-github-coreos-discovery-etcd-io_2.0.0+git2019.04.19.git.78fb45d3c9-4175d [B][L][T] 
gpyfft_0.7.1-414d [B][L][T] 
trilinos_16.1.0-562d [B][L][T]#1143799 - trilinos: FTBFS: The Open MPI wrapper compiler was unable to find the specified compiler gfortran-15 in your PATH.
bali-phy_4.3+dfsg-26d [B][L][T] 
dav2d_0.0.1-1173d [B][L][T] 
libgweather4_4.6.0-27d [B][L][T] 
opensnitch_1.6.9-4108d [B][L][T]#1108846 - opensnitch: fix loongarch/riscv build
#1148975 - opensnitch: Fails to build in current unstable
rust-count-instructions_0.2.1-11d [B][L][T] 
rust-jemalloc-sys_0.3.2-2.1560d [B][L][T]#1018724 - rust-jemalloc-sys FTBFS on riscv64(gc)
udev-hid-bpf_2.3.0.20260703.4.gef5fbe3-1100d [B][L][T] 
libembperl-perl_2.5.0-17560d [B][L][T]#1042845 - libembperl-perl: FTBFS with Perl 5.38: test failures
#1137057 - libembperl-perl: FTBFS in bookworm
openjfx_21.0.12+3-323d [B][L][T] 
tiny_0.13.0-2151d [B][L][T] 
vg_1.59.0+ds-0.1560d [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
gpaw_25.7.0-31d [B][L][T]#1069447 - gpaw: FTBFS on armhf: dh_auto_test: error: pybuild --test --test-pytest -i python{version} -p "3.12 3.11" --test-pytest "--test-args=-v -m ci" returned exit code 13
lua-struct_0.3-2380d [B][L][T] 
lua-vips_1.1.12-2560d [B][L][T]#1073143 - lua-vips: Bus error in lua jit during tests
mpd_0.24.16-110d [B][L][T]#1151168 - mpd: FTBFS with pupnp 22.1.8
psygnal_0.16.1-12d [B][L][T] 
gudhi_3.13.0+dfsg-1.14d [B][L][T]#1151995 - gudhi: FTBFS: E: dh_python3 fs:172: Not everything in 'debian/python3-gudhi/usr/lib/python3.15/dist-packages/gudhi' was able to be merged into 'debian/python3-gudhi/usr/lib/python3/dist-packages/gudhi'.
ola_0.10.9.nojsmin-83d [B][L][T] 
ovito_3.15.4~ds-1175d [B][L][T]#1141106 - ovito: FTBFS due to using deprecated Qt6 build dependencies
#1143685 - ovito: FTBFS: collect2: error: ld returned 1 exit status
#1144023 - ovito: FTBFS with ffmpeg 9.0
rapmap_0.15.0+dfsg-5384d [B][L][T]#976588 - rapmap: FTBFS on arm64 (when trying to build arch:all)
rust-subversion_0.1.13-12d [B][L][T]#1103725 - rust-subversion: FTBFS on many archs: expected raw pointer *const u8, found *const i8
pwru_1.0.5+ds1-592d [B][L][T] 
regina-normal_7.4.1-1.287d [B][L][T]#1133619 - regina-normal: ftbfs with GCC-16
rust-criterion-cycles-per-byte_0.6.1-1560d [B][L][T] 
rust-mach-o-sys_0.1.1-31180d [B][L][T]#953285 - rust-mach-o-sys fails on architectures with unsigned char
#976484 - rust-mach-o-sys: unsigned values cannot be negated
bpfilter_0.6.0-2145d [B][L][T] 
bpftune_0.4.2.10.g4712347-192d [B][L][T] 
openstructure_2.12.0-130d [B][L][T]#976491 - openstructure: FTBFS on arm64: E: Build killed with signal TERM after 150 minutes of inactivity
rust-lv2-sys_2.0.0-1.1560d [B][L][T] 
clang-extract_0.0~git20260224.ac30d66-1.15d [B][L][T] 
hmmer_3.4+dfsg-3394d [B][L][T] 
plotsauce_0~0.1-1420d [B][L][T]#1072135 - plotsauce: FTBFS: plotsauce.qbs:11:5 Dependency 'zlib' not found for product 'plotsauce'.
librpmalloc_2.0.1-126d [B][L][T]#1149775 - librpmalloc: portability improvements
opentsne_1.0.2-51d [B][L][T] 
neuron_8.2.6-31d [B][L][T]#1048047 - neuron: Fails to build source after successful build
pyfftw_0.15.0-1.1560d [B][L][T]#917095 - python3-pyfftw: alignment tests fail on several arches
rust-cee-scape_0.2.0-1171d [B][L][T] 
ufo-filters_0.17.0.76.g691aa0e+dfsg1-283d [B][L][T]#1113596 - ufo-filters: FTBFS with CMake 4
cpptraj_5.1.0+dfsg-5402d [B][L][T]#1035833 - cpptraj: FTBFS on \!amd64
#1091156 - cpptraj: FTBFS on arm64: make[2]: *** [Makefile:662: summary] Error 4
mpqc_2.3.1-22698d [B][L][T]#1049570 - mpqc: Fails to build binary packages again after successful build
#1075293 - mpqc: ftbfs with GCC-14
simint_0.7-2132d [B][L][T]#1140342 - simint: FTBFS almost everywhere
llvm-toolchain-19_1:19.1.7-2294d [B][L][T]#1142869 - llvm-toolchain-19: FTBFS: fatal error: 'linux/scc.h' file not found
bwa-mem2_2.3+ds-1244d [B][L][T] 
commons-daemon_1.6.1-12d [B][L][T] 
drawterm_20240821-0.1231d [B][L][T]#1126330 - drawterm: FTBFS on non x86: (cd posix-$arch && make) - "can't cd to posix-..."
python-clevercsv_0.8.5+ds-119h [B][L][T] 
sorted-nearest_0.0.41+dfsg-42d [B][L][T] 
dmrgpp_6.06-283d [B][L][T]#1096531 - dmrgpp: ftbfs with GCC-15
xemacs21_21.4.24-12650d [B][L][T]#1075659 - xemacs21: ftbfs with GCC-14
aj-snapshot_0.9.9-4227d [B][L][T]#1093685 - aj-snapshot: FTBFS with mxml 4.0.3
anytun_0.3.8-1.1237d [B][L][T]#1127165 - anytun: libboost-system-dev package is obsolete with boost 1.89 and newer
coq-corn_8.20.0-178d [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_1.7.11-177d [B][L][T]#1143295 - coq-relation-algebra: FTBFS: findlib error: coq-core.plugins.ltac not found in:
frama-c_20220511-manganese-5305d [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)
libgee-0.8_0.20.8-21d [B][L][T] 
libomemo_0.8.1-3227d [B][L][T]#1131332 - libomemo: FTBFS with mxml 4
libpwiz_3.0.18342-4.2237d [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_0.5.8-7436d [B][L][T]#1106642 - libvirt-php ftbfs with libxml 2.14.x from experimental
linphone_5.3.105-6190d [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]'
ocaml-gavl_0.1.6-241d [B][L][T]#1047051 - ocaml-gavl: Fails to build source after successful build
#1127729 - ovaml-gavl: FTBFS with gavl_2.0.1
octave-video_2.1.3-352d [B][L][T]#1115036 - octave-video: FTBFS with ffmpeg 8.0
#1132464 - octave-video: prevents upgrade of octave and related packages
python-escript_5.6-1055d [B][L][T]#1149336 - python-escript: FTBFS: debian/stage3/bin/run-escript: No such file or directory
rust-sequoia-sop_0.37.3-23d [B][L][T]#1152059 - rust-sequoia-sop: FTBFS: error: failed to select a version for the requirement `sequoia-wot = "^0.14.0"`
schroot_1.6.13-819d [B][L][T]#1150310 - schroot: FTBFS: undefined reference to `boost::iostreams::file_descriptor::close()
scram_0.16.2-4237d [B][L][T]#1129858 - scram: FTBFS with boost 1.90
sdml_0.3.2+20250310-7122d [B][L][T]#1140282 - sdml: FTBFS: error: failed to select a version for the requirement `tree-sitter = "^0.25"`
siconos_4.4.0+dfsg-6112d [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
solarpowerlog_0.26-1237d [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+git20220507.32e0517-6332d [B][L][T]#1119033 - stdgpu: FTBFS with libamdhip64-dev 6.4.3
swift-im_5.0~alpha2.145.g12d031cf8+dfsg-5237d [B][L][T]#1127287 - swift-im: libboost-system-dev package is obsolete with boost 1.89 and newer
tiledarray_1.0.0-1414d [B][L][T]#1087560 - tiledarray: FTBFS: missing cstdint include
vagrant_2.3.7+git20230731.5fc64cde+dfsg-4.119d [B][L][T]#1126086 - vagrant: FTBFS with Errors::BoxMetadataDownloadError
#1150361 - vagrant: FTBFS: raise Errors::BoxMetadataDownloadError,
lightningcss_1.33.0+ds-558d [B][L][T]#1146269 - lightningcss: FTBFS: error[E0308]: mismatched types
10 FTBFS packages on riscv64 with a patch pending
epics-base_7.0.8.1+dfsg1-10180d [B][L][T]#1079604 - epics-base:FTBFS:build failure (not support riscv64)
freehsm-c_2.0.0-154d [B][L][T]#1144631 - freehsm-c FTBFS on non-x86: cc1: error: ‘-fcf-protection=full’ is not supported for this target
#1149536 - freehsm-c: FTBFS on non-amd64 architectures
libgrokj2k_10.0.5-197d [B][L][T]#1085165 - libgrokj2k: FTBFS on armhf: ‘vreinterpret_f16_u16’ was not declared in this scope
mold_3.0.0-112d [B][L][T]#1151074 - mold FTBFS on riscv64: test timeout
mono_6.14.1+ds2-3174d [B][L][T]#1045158 - mono: Fails to build source after successful build
numba_0.65.1+dfsg-3149d [B][L][T]#1144999 - numba: FTBFS building against python 3.15
openms_2.6.0+cleaned1-683d [B][L][T]#1148933 - openms: FTBFS with hdf5 2.2: ld: cannot find -lhdf5_cpp-shared
pixmap_2.6.6-1984d [B][L][T]#1054698 - pixmap: FTBFS: ././Pixmap.c:1145:(.text+0xe631): undefined reference to `xpmReadRgbNames'
scrollz_2.2.3-2951d [B][L][T]#1066483 - scrollz: FTBFS: configure: error: Fatal: You must get working getaddrinfo() function.
sphde_1.4.0-5.1560d [B][L][T]#1125773 - sphde: FTBFS on arm64: TERM after 150 minutes of inactivity