Where does crt1.o for a crosscompiler come from

The location of crt1.o is controlled by the specs file; in the above case, the "built-in specs". For more hints, try looking carefully through the output of a complete compile that specifies -v to gcc and -v to the linker (which is done via "-Wl,-v" to gcc): ----- $ gcc -v -Wl,-v hello.c Reading specs fromusr-lib-gcc-lib-i386-redhat-linux-3.2.2-specs Configured with: ..-configure --prefix=-usr --mandir=-usr-share-man --infodir=-usr-share-info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-cxaatexit --host=i386-redhat-linux Thread model: posix gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)usr-lib-gcc-lib-i386-redhat-linux-3.2.2-cc1 -lang-c -v -DGNUC=3 -DGNUCMINOR=2 -DGNUCPATCHLEVEL=2 -DGXXABIVERSION=102 -DELF -Dunix -Dgnulinux -Dlinux -DELF -Dunix -Dgnulinux -Dlinux -Dunix -Dlinux -Asystem=posix -DNOINLINE -DSTDCHOSTED=1 -Acpu=i386 -Amachine=i386 -Di386 -Di386 -Di386 -Dtunei386 hello.c -quiet -dumpbase hello.c -version -otmp-ccOeAHBR.s GNU CPP version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) (cpplib) (i386 Linux-ELF) GNU C version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) (i386-redhat-linux) compiled by GNU C version 3.2.2 20030222 (Red Hat Linux 3.2.2-5). ignoring nonexistent directory "-usr-i386-redhat-linux-include" #include "..." search starts here:usr-local-includeusr-lib-gcc-lib-i386-redhat-linux-3.2.2-includeusr-include End of search list. as -V -Qy -otmp-ccAtVU4z.otmp-ccOeAHBR.s GNU buttembler version 2.13.90.0.18 (i386-redhat-linux) using BFD version 2.13.90.0.18 20030206usr-lib-gcc-lib-i386-redhat-linux-3.2.2-collect2 --eh-frame-hdr -m elfi386 -dynamic-linkerlib-ld-linux.so.2usr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crt1.ousr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crti.ousr-lib-gcc-lib-i386-redhat-linux-3.2.2-crtbegin.o -L-usr-lib-gcc-lib-i386-redhat-linux-3.2.2 -L-usr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-.. -vtmp-ccAtVU4z.o -lgcc -lgcceh -lc -lgcc -lgccehusr-lib-gcc-lib-i386-redhat-linux-3.2.2-crtend.o usr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crtn.o collect2 version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) (i386 Linux-ELF)usr-bin-ld --eh-frame-hdr -m elfi386 -dynamic-linkerlib-ld-linux.so.2usr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crt1.ousr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crti.ousr-lib-gcc-lib-i386-redhat-linux-3.2.2-crtbegin.o -L-usr-lib-gcc-lib-i386-redhat-linux-3.2.2 -L-usr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-.. -vtmp-ccAtVU4z.o -lgcc -lgcceh -lc -lgcc -lgccehusr-lib-gcc-lib-i386-redhat-linux-3.2.2-crtend.ousr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crtn.o GNU ld version 2.13.90.0.18 20030206 $ -----

In this case, notice the usr-lib-gcc-lib-i386-redhat-linux-3.2.2-..-..-..-crt1.o in the arguments to collect2.

--