% chicken-install dbus
building dbus
   /usr/bin/chicken-csc -host -D compiling-extension -J -s -regenerate-import-libraries -setup-mode -I /home/reid/.cache/chicken-install/dbus -C -I/home/reid/.cache/chicken-install/dbus -O3 -d1 -C `pkg-config --cflags dbus-1` -L `pkg-config --libs dbus-1` dbus.scm -o /home/reid/.cache/chicken-install/dbus/dbus.so
gcc: error: unrecognized command-line option ‘--cflags’

Error: shell command terminated with non-zero exit status 256: 'gcc' '/home/reid/.cache/chicken-install/dbus/dbus.c' -o '/home/reid/.cache/chicken-install/dbus/dbus.o' -c  '-fno-strict-aliasing' '-fwrapv' '-DHAVE_CHICKEN_CONFIG_H' '-Wl,--as-needed' '-ffat-lto-objects' '-march=x86-64' '-mtune=generic' '-O2' '-pipe' '-fno-plt' '-fexceptions' '-Wp,-D_FORTIFY_SOURCE=3' '-Wformat' '-Werror=format-security' '-fstack-clash-protection' '-fcf-protection' '-fno-omit-frame-pointer' '-mno-omit-leaf-frame-pointer' '-g' '-ffile-prefix-map=/build/chicken/src=/usr/src/debug/chicken' '-flto=auto' '-w' '-O3' '-fomit-frame-pointer' '-fPIC' '-DPIC' '-DC_SHARED' '-I/home/reid/.cache/chicken-install/dbus' '`pkg-config' '--cflags' 'dbus-1`' '-I/usr/include/chicken'

Error: shell command terminated with nonzero exit code
256
"sh /home/reid/.cache/chicken-install/dbus/dbus.build.sh"