Package: libnginx-mod-http-ndk-dev Version: 1:0.3.3-1 There is a module package for Nginx, which worked as well since this FTBFS bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1067364 The upstream contains this section in config: https://github.com/owasp-modsecurity/ModSecurity-nginx/blob/master/config#L15 ngx_feature_test='printf("hello");' The problem is when the buildpackage process starts, I got this error: hecking for ModSecurity library ... not found checking for ModSecurity library in /usr/local/modsecurity ... not found ./configure: error: ngx_http_modsecurity_module requires the ModSecurity library. see sbuild.log: http://qa-logs.debian.net/2024/03/19/libnginx-mod-http-modsecurity_1.0.3-1_unstable.log I investigated the root issue, and I found this message in obj-x86_64-linux-gnu/autoconf.err: /home/airween/src/libnginx-mod-http-modsecurity-1.0.3/obj-x86_64-linux-gnu/autotest.c:7:5: note: include '<stdio.h>' or provide a declaration of 'printf' cc1: some warnings being treated as errors ---------- #include <sys/types.h> #include <unistd.h> #include <modsecurity/modsecurity.h> int main(void) { printf("hello");; return 0; } ... checking for ModSecurity library in /usr/local/modsecurity /home/airween/src/libnginx-mod-http-modsecurity-1.0.3/obj-x86_64-linux-gnu/autotest.c: In function 'main': /home/airween/src/libnginx-mod-http-modsecurity-1.0.3/obj-x86_64-linux-gnu/autotest.c:7:5: error: implicit declaration of function 'printf' [-Werror=implicit-function-declaration] 7 | printf("hello");; | ^~~~~~ /home/airween/src/libnginx-mod-http-modsecurity-1.0.3/obj-x86_64-linux-gnu/autotest.c:5:1: note: include '<stdio.h>' or provide a declaration of 'printf' 4 | #include <modsecurity/modsecurity.h> +++ |+#include <stdio.h> 5 | /home/airween/src/libnginx-mod-http-modsecurity-1.0.3/obj-x86_64-linux-gnu/autotest.c:7:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch] 7 | printf("hello");; | ^~~~~~ /home/airween/src/libnginx-mod-http-modsecurity-1.0.3/obj-x86_64-linux-gnu/autotest.c:7:5: note: include '<stdio.h>' or provide a declaration of 'printf' cc1: some warnings being treated as errors ---------- #include <sys/types.h> #include <unistd.h> #include <modsecurity/modsecurity.h> int main(void) { printf("hello");; return 0; } If I add a patch (via d/series) which adds this header correctly, then everything is fine, the package builds as well. The upstream isn't touched since 6 years (the mentioned file), so I guess something is changed in libnginx-mod-http-ndk-dev (if it is responsible to produce the test codes - I guess). Note, that there isn't any user report in upstream regarding this problem, actually I can reproduce this only in Debian. Sorry if I'm wrong. Thanks, a.