речь про закрытую часть

libusb:
configure:27639: checking for usb_init,usb_get_string_simple in -lusb
configure:27674: gcc -o conftest -Wall -funsigned-char -O2 -D_FORTIFY_SOURCE=2 -I/usr/local/include
  conftest.c -lusb   >&5
conftest.c: In function 'main':
conftest.c:49: warning: left-hand operand of comma expression has no effect
/usr/bin/ld: cannot find -lusb
должно быть -lusb-0.1

gettext:
в freebsd валится сборка
cc -I/usr/local/include/freetype2 -I/usr/local/include -pedantic -DBINDIR=\"/usr/local/bin\" -Wall -funsigned-char -O2 -D_FORTIFY_SOURCE=2 -o winediag winediag-winediag.o winediag-threads.o winediag-setlock.o winediag-filelimits.o winediag-etercheck.o -L/usr/local/lib -lpthread -L/usr/X11R6/lib/ /usr/local/lib/libX11.so /usr/local/lib/libXau.so /usr/local/lib/libXdmcp.so -lrpcsvc -lwine -Wl,--rpath -Wl,/usr/local/lib -Wl,--rpath -Wl,/usr/local/lib
winediag-winediag.o(.text+0x43): In function `main':
: undefined reference to `libintl_textdomain'
winediag-winediag.o(.text+0x57): In function `main':
: undefined reference to `libintl_bindtextdomain'
winediag-winediag.o(.text+0x63): In function `main':
: undefined reference to `libintl_gettext'
winediag-winediag.o(.text+0x8a): In function `main':
: undefined reference to `libintl_gettext'
winediag-winediag.o(.text+0xc7): In function `main':
: undefined reference to `libintl_gettext'
winediag-winediag.o(.text+0xe8): In function `main':
: undefined reference to `libintl_gettext'
winediag-winediag.o(.text+0x1d5): In function `main':
: undefined reference to `libintl_gettext'
winediag-winediag.o(.text+0x242): more undefined references to `libintl_gettext' follow
если добавить -lintl
то все собирается.