amanda-3.5.1-26.fc34 fails to build in F34:

libtool: link: gcc -Wall -Wextra -Wparentheses -Wdeclaration-after-statement -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Wformat -Wformat-security -Wsign-compare -Wfloat-equal -Wold-style-definition -Wno-strict-aliasing -Wno-unknown-pragmas -Wno-deprecated-declarations -DAMANDA_FILE=\"event-test.o\" -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -mbranch-protection=standard -fasynchronous-unwind-tables -fstack-clash-protection -fPIE -fno-strict-aliasing -Wl,-z -Wl,relro -Wl,--as-needed -Wl,-z -Wl,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -pie -o .libs/event-test event-test.o -Wl,--export-dynamic -pthread  ./.libs/libamanda.so ./.libs/libtestutils.a -lrt -lm -lgmodule-2.0 -lgobject-2.0 -lgthread-2.0 -lglib-2.0 -lresolv -lgssapi_krb5 -lkrb5 -lk5crypto -lkrb5support -lcom_err -lssl -lcrypto -lcurl -ltirpc -pthread
/usr/bin/ld: ./.libs/libamanda.so: undefined reference to `__open_missing_mode'
/usr/bin/ld: ./.libs/libamanda.so: undefined reference to `__open_missing_mode'
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:2382: crc32-test] Error 1

A difference between passing and failing build root is at <https://koschei.fedoraproject.org/build/9118707>.