Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
gcc -Isystemd-hostnamed.p -I. -I.. -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I../src/libsystemd/sd-bus -I../src/libsystemd/sd-device -I../src/libsystemd/sd-event -I../src/libsystemd/sd-hwdb -I../src/libsystemd/sd-id128 -I../src/libsystemd/sd-journal -I../src/libsystemd/sd-json -I../src/libsystemd/sd-netlink -I../src/libsystemd/sd-network -I../src/libsystemd/sd-path -I../src/libsystemd/sd-resolve -I../src/libsystemd/sd-varlink -Isrc/shared -I../src/shared -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -Werror -std=gnu11 -Wno-missing-field-initializers -Wno-unused-parameter -Wno-nonnull-compare -Warray-bounds -Warray-bounds=2 -Wdate-time -Wendif-labels -Werror=format=2 -Werror=format-signedness -Werror=implicit-function-declaration -Werror=implicit-int -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=missing-declarations -Werror=missing-prototypes -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=strict-flex-arrays -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wzero-length-bounds -fdiagnostics-show-option -fno-common -fstack-protector -fstack-protector-strong -fstrict-flex-arrays=3 --param=ssp-buffer-size=4 -Wno-maybe-uninitialized -Wno-unused-result -ftrivial-auto-var-init=zero -Werror=shadow -O2 -flto=auto -ffat-lto-objects -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 -mbranch-protection=standard -fasynchronous-unwind-tables -fstack-clash-protection -fno-strict-aliasing -fstrict-flex-arrays=1 -fvisibility=hidden -ffunction-sections -fdata-sections -include config.h -MD -MQ systemd-hostnamed.p/src_hostname_hostnamed.c.o -MF systemd-hostnamed.p/src_hostname_hostnamed.c.o.d -o systemd-hostnamed.p/src_hostname_hostnamed.c.o -c ../src/hostname/hostnamed.c
../src/hostname/hostnamed.c: In function âget_chassis_asset_tagâ:
../src/hostname/hostnamed.c:297:16: error: implicit declaration of function âget_dmi_propertyâ [-Wimplicit-function-declaration]
  297 |         return get_dmi_property(c, "ID_CHASSIS_ASSET_TAG", ret);
      |                ^~~~~~~~~~~~~~~~
../src/hostname/hostnamed.c:297:16: error: nested extern declaration of âget_dmi_propertyâ [-Werror=nested-externs]
Function get_dmi_property is not declared causing compilation failure