58 |     buses[busnumber].driverdata = malloc(sizeof(struct _IB_DATA));
      |                                   ^~~~~~
ib.c:58:35: note: include ‘<stdlib.h>’ or provide a declaration of ‘malloc’
ib.c:97:35: error: implicit declaration of function ‘atoi’ [-Wimplicit-function-declaration]
   97 |                 __ib->number_fb = atoi((char *) txt);
      |                                   ^~~~
ib.c: In function ‘end_bus_thread’:
ib.c:1005:5: error: implicit declaration of function ‘free’ [-Wimplicit-function-declaration]
 1005 |     free(buses[btd->bus].driverdata);
      |     ^~~~
ib.c:1005:5: note: include ‘<stdlib.h>’ or provide a declaration of ‘free’
ib.c:1005:5: warning: incompatible implicit declaration of built-in function ‘free’ [-Wbuiltin-declaration-mismatch]
ib.c:1005:5: note: include ‘<stdlib.h>’ or provide a declaration of ‘free’
ib.c: In function ‘thr_sendrec_IB’:
ib.c:1819:42: warning: incompatible implicit declaration of built-in function ‘malloc’ [-Wbuiltin-declaration-mismatch]
 1819 |     bus_thread_t *btd = (bus_thread_t *) malloc(sizeof(bus_thread_t));
      |                                          ^~~~~~
ib.c:1819:42: note: include ‘<stdlib.h>’ or provide a declaration of ‘malloc’
make[2]: *** [Makefile:518: ib.o] Error 1
make[2]: Leaving directory '/builddir/build/BUILD/srcpd-2.1.6/src'
make[2]: *** Waiting for unfinished jobs....
make[2]: Entering directory '/builddir/build/BUILD/srcpd-2.1.6/src'
gcc -D_REENTRANT -DSYSCONFDIR=\"/etc\" -DHAVE_CONFIG_H -I.   -I/usr/include/libxml2   -O2  -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -fasynchronous-unwind-tables -fno-omit-frame-pointer   -c -o ddl_maerklin.o ddl_maerklin.c
make[2]: Leaving directory '/builddir/build/BUILD/srcpd-2.1.6/src'
make[2]: Entering directory '/builddir/build/BUILD/srcpd-2.1.6/src'
gcc -D_REENTRANT -DSYSCONFDIR=\"/etc\" -DHAVE_CONFIG_H -I.   -I/usr/include/libxml2   -O2  -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -fasynchronous-unwind-tables -fno-omit-frame-pointer   -c -o ddl_nmra.o ddl_nmra.c
make[2]: Leaving directory '/builddir/build/BUILD/srcpd-2.1.6/src'
make[2]: Entering directory '/builddir/build/BUILD/srcpd-2.1.6/src'
gcc -D_REENTRANT -DSYSCONFDIR=\"/etc\" -DHAVE_CONFIG_H -I.   -I/usr/include/libxml2   -O2  -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -fasynchronous-unwind-tables -fno-omit-frame-pointer   -c -o ddl.o ddl.c
make[2]: Leaving directory '/builddir/build/BUILD/srcpd-2.1.6/src'
make[1]: *** [Makefile:367: all] Error 2
make: *** [Makefile:439: all-recursive] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.rOupoV (%build)
RPM build warnings:
    %patchN is deprecated (2 usages found), use %patch N (or %patch -P N)
RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.rOupoV (%build)
Child return code was: 1
EXCEPTION: [Error()]
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.9/site-packages/mockbuild/util.py", line 600, in do_with_status
    raise exception.Error("Command failed: \n # %s\n%s" % (command, output), child.returncode)
mockbuild.exception.Error: Command failed: 
 # bash --login -c /usr/bin/rpmbuild -bb --target riscv64 --nodeps /builddir/build/SPECS/srcpd.spec