Dear maintainer,

your package fails to build with libjsoncpp 1.9.7, because
libjsoncpp uses C++17 features, but your packages forces
an earlier C++ standard.

This bug will become release-critical once libjsoncpp hits
unstable in a couple of weeks. In most cases, it is sufficient
to remove CXX_STANDARD variable definitions from CMakeLists.txt

Hopefully relevant excerpt:


make[1]: Entering directory '/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8'
cd cpp && make -e all
make[2]: Entering directory '/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8/cpp'
g++ -g -O2 -ffile-prefix-map=/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++11 -fopenmp -ffloat-store -msse2 -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -I/usr/include/jsoncpp iid_main.cpp -o ea_iid -lbz2 -lpthread -ldivsufsort -ldivsufsort64 -ljsoncpp -lcrypto
g++ -g -O2 -ffile-prefix-map=/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++11 -fopenmp -ffloat-store -msse2 -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -I/usr/include/jsoncpp non_iid_main.cpp -o ea_non_iid -lbz2 -lpthread -ldivsufsort -ldivsufsort64 -ljsoncpp -lcrypto
g++ -g -O2 -ffile-prefix-map=/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++11 -fopenmp -ffloat-store -msse2 -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -I/usr/include/jsoncpp restart_main.cpp -o ea_restart -lbz2 -lpthread -ldivsufsort -ldivsufsort64 -ljsoncpp -lcrypto
g++ -g -O2 -ffile-prefix-map=/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++11 -fopenmp -ffloat-store -msse2 -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -I/usr/include/jsoncpp conditioning_main.cpp -o ea_conditioning -lbz2 -lpthread -ldivsufsort -ldivsufsort64 -lmpfr -lgmp -ljsoncpp -lcrypto
g++ -g -O2 -ffile-prefix-map=/build/reproducible-path/sp800-90b-entropy-assessment-1.1.8=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -std=c++11 -fopenmp -ffloat-store -msse2 -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -I/usr/include/jsoncpp transpose_main.cpp -o ea_transpose -lbz2 -lpthread -ldivsufsort -ldivsufsort64 -ljsoncpp -lcrypto
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccAAx1wd.o: in function `TestRunBase::GetBaseJson()':
./cpp/non_iid/../shared/test_run_base.h:23:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x3d): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/non_iid/../shared/test_run_base.h:24:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x6e): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/non_iid/../shared/test_run_base.h:25:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x9b): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/non_iid/../shared/test_run_base.h:26:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xcc): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/non_iid/../shared/test_run_base.h:27:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xfd): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccAAx1wd.o:./cpp/non_iid/../shared/test_run_base.h:30: more undefined references to `Json::Value::operator[](char const*)' follow
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:46: conditioning_main.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccLIX0g7.o: in function `TestRunBase::GetBaseJson()':
./cpp/shared/test_run_base.h:23:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x3d): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:24:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x6e): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:25:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x9b): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:26:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xcc): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:27:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xfd): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccLIX0g7.o:./cpp/shared/test_run_base.h:30: more undefined references to `Json::Value::operator[](char const*)' follow
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:38: non_iid_main.o] Error 1
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccy9y7Nz.o: in function `TestRunBase::GetBaseJson()':
./cpp/shared/test_run_base.h:23:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x3d): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:24:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x6e): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:25:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x9b): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:26:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xcc): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:27:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xfd): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccy9y7Nz.o:./cpp/shared/test_run_base.h:30: more undefined references to `Json::Value::operator[](char const*)' follow
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:34: iid_main.o] Error 1
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccLdl5wC.o: in function `TestRunBase::GetBaseJson()':
./cpp/shared/test_run_base.h:23:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x3d): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:24:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x6e): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:25:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0x9b): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:26:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xcc): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: ./cpp/shared/test_run_base.h:27:(.text._ZN11TestRunBase11GetBaseJsonEv[_ZN11TestRunBase11GetBaseJsonEv]+0xfd): undefined reference to `Json::Value::operator[](char const*)'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccLdl5wC.o:./cpp/shared/test_run_base.h:30: more undefined references to `Json::Value::operator[](char const*)' follow
collect2: error: ld returned 1 exit status


Cheers
Timo
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We believe that the bug you reported is fixed in the latest version of
libjsoncpp, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1135772@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Timo Röhling <roehling@debian.org> (supplier of updated libjsoncpp package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Wed, 06 May 2026 10:05:30 +0200
Source: libjsoncpp
Architecture: source
Version: 1.9.7-2
Distribution: unstable
Urgency: medium
Maintainer: Timo Röhling <roehling@debian.org>
Changed-By: Timo Röhling <roehling@debian.org>
Closes: 1135759 1135760 1135761 1135769 1135772 1135776
Changes:
 libjsoncpp (1.9.7-2) unstable; urgency=medium
 .
   * Update d/copyright
   * Prevent ABI breakage with pre-C++17 code
     (Closes: #1135759, #1135760, #1135761, #1135769, #1135772, #1135776)
   * Revert SONAME bump
 .
 libjsoncpp (1.9.7-1) experimental; urgency=medium
 .
   * Add symbols file
   * New upstream version 1.9.7
   * Update patches
     - Merged: 0001-Stop-using-removed-cgi-module.patch
   * Bump Standards-Version to 4.7.4
   * Update d/copyright
   * Bump SOVERSION to 27
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Files:
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