when running
arm-none-linux-gnueabi-gcc -print-search-dirs | grep libraries | sed 's/:/\n/g'
I get the following output:
libraries
=/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/lib/arm-none-linux-gnueabi/4.4.1/
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/lib/
/opt/codesourcery/arm-none-linux-gnueabi/libc/lib/arm-none-linux-gnueabi/4.4.1/
/opt/codesourcery/arm-none-linux-gnueabi/libc/lib/
/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/arm-none-linux-gnueabi/4.4.1/
/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/
and when cross-compiling some packages it would make my life MUCH easier to be able to append to these paths. I know about the -L option, and I would like to use it, but many packages don't respect it while cross compiling, moreover using it with codesourcery causes problems. (see end of this post for details). Basically I've got a whole directory tree with all the required files to compile packages, and I want to add that directory tree to the default search paths. E.g, so that -print-search-dirs will also output a path similar to:
/target/usr/lib
/target/lib
in addition to the paths already listed. I'm not looking for a codesourcey specific answer, since I have several toolchains I can work with.
For those who are curious, here is the error from a codesourcery installation:
arm-none-linux-gnueabi-gcc test.c
works
arm-none-linux-gnueabi-gcc -L/usr/arm-unknown-linux-gnueabi/usr/lib test.c
fails with:
/lib/libc.so.6: file not recognized: File format not recognized
collect2: ld returned 1 exit status
so obviously it's grabbing libc from the host. I've seen this happen with more than one toolchain, but not all.
In response to a comment: Here is the output for
arm-none-linux-gnueabi-gcc -L/usr/arm-unknown-linux-gnueabi/usr/lib test.c -v -Wl,-verbose
Using built-in specs.
Target: arm-none-linux-gnueabi
Configured with: /scratch/julian/2010q1-release-linux-lite/src/gcc-4.4-2010q1/configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi --enable-threads --disable-libmudflap --disable-libssp --disable-libstdcxx-pch --enable-extra-sgxxlite-multilibs --with-arch=armv5te --with-gnu-as --with-gnu-ld --with-specs='%{funwind-tables|fno-unwind-tables|mabi=*|ffreestanding|nostdlib:;:-funwind-tables} %{O2:%{!fno-remove-local-statics: -fremove-local-statics}} %{O*:%{O|O0|O1|O2|Os:;:%{!fno-remove-local-statics: -fremove-local-statics}}}' --enable-languages=c,c++ --enable-shared --disable-lto --enable-symvers=gnu --enable-__cxa_atexit --with-pkgversion='Sourcery G++ Lite 2010q1-202' --with-bugurl=https://support.codesourcery.com/GNUToolchain/ --disable-nls --prefix=/opt/codesourcery --with-sysroot=/opt/codesourcery/arm-none-linux-gnueabi/libc --with-build-sysroot=/scratch/julian/2010q1-release-linux-lite/install/arm-none-linux-gnueabi/libc --with-gmp=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --with-mpfr=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --with-ppl=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-cloog=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --disable-libgomp --enable-poison-system-directories --with-build-time-tools=/scratch/julian/2010q1-release-linux-lite/install/arm-none-linux-gnueabi/bin --with-build-time-tools=/scratch/julian/2010q1-release-linux-lite/install/arm-none-linux-gnueabi/bin
Thread model: posix
gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202)
COLLECT_GCC_OPTIONS='-L/usr/arm-unknown-linux-gnueabi/usr/lib' '-v' '-march=armv5te' '-funwind-tables'
/opt/codesourcery/libexec/gcc/arm-none-linux-gnueabi/4.4.1/cc1 -quiet -v test.c -quiet -dumpbase test.c -march=armv5te -auxbase test -version -funwind-tables -o /tmp/ccaDSo09.s
ignoring nonexistent directory "/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/local/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/include
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/include-fixed
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/include
/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/include
End of search list.
GNU C (Sourcery G++ Lite 2010q1-202) version 4.4.1 (arm-none-linux-gnueabi)
compiled by GNU C version 4.3.2, GMP version 4.3.1, MPFR version 2.4.2.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 250bf78701f747da89e730786c466148
COLLECT_GCC_OPTIONS='-L/usr/arm-unknown-linux-gnueabi/usr/lib' '-v' '-march=armv5te' '-funwind-tables'
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/as -v -march=armv5te -meabi=5 -o /tmp/ccQTJKJd.o /tmp/ccaDSo09.s
GNU assembler version 2.19.51 (arm-none-linux-gnueabi) using BFD version (Sourcery G++ Lite 2010q1-202) 2.19.51.20090709
COMPILER_PATH=/opt/codesourcery/libexec/gcc/arm-none-linux-gnueabi/4.4.1/:/opt/codesourcery/libexec/gcc/arm-none-linux-gnueabi/4.4.1/:/opt/codesourcery/libexec/gcc/arm-none-linux-gnueabi/:/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/:/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/:/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/
LIBRARY_PATH=/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/:/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/lib/:/opt/codesourcery/arm-none-linux-gnueabi/libc/lib/:/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/
COLLECT_GCC_OPTIONS='-L/usr/arm-unknown-linux-gnueabi/usr/lib' '-v' '-march=armv5te' '-funwind-tables'
/opt/codesourcery/libexec/gcc/arm-none-linux-gnueabi/4.4.1/collect2 --sysroot=/opt/codesourcery/arm-none-linux-gnueabi/libc --eh-frame-hdr -dynamic-linker /lib/ld-linux.so.3 -X -m armelf_linux_eabi /opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crt1.o /opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crti.o /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/crtbegin.o -L/usr/arm-unknown-linux-gnueabi/usr/lib -L/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1 -L/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/lib -L/opt/codesourcery/arm-none-linux-gnueabi/libc/lib -L/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib /tmp/ccQTJKJd.o -verbose -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/crtend.o /opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crtn.o
GNU ld (Sourcery G++ Lite 2010q1-202) 2.19.51.20090709
Supported emulations:
armelf_linux_eabi
armelfb_linux_eabi
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attempt to open /opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crt1.o succeeded
/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crt1.o
attempt to open /opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crti.o succeeded
/opt/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/crti.o
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/crtbegin.o succeeded
/opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/crtbegin.o
attempt to open /tmp/ccQTJKJd.o succeeded
/tmp/ccQTJKJd.o
attempt to open /usr/arm-unknown-linux-gnueabi/usr/lib/libgcc.so failed
attempt to open /usr/arm-unknown-linux-gnueabi/usr/lib/libgcc.a failed
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/libgcc.so failed
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/libgcc.a succeeded
attempt to open /usr/arm-unknown-linux-gnueabi/usr/lib/libgcc_s.so failed
attempt to open /usr/arm-unknown-linux-gnueabi/usr/lib/libgcc_s.a failed
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/libgcc_s.so failed
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/libgcc_s.a failed
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/lib/libgcc_s.so failed
attempt to open /opt/codesourcery/lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/lib/libgcc_s.a failed
attempt to open /opt/codesourcery/arm-none-linux-gnueabi/libc/lib/libgcc_s.so succeeded
-lgcc_s (/opt/codesourcery/arm-none-linux-gnueabi/libc/lib/libgcc_s.so)
attempt to open /usr/arm-unknown-linux-gnueabi/usr/lib/libc.so succeeded
opened script file /usr/arm-unknown-linux-gnueabi/usr/lib/libc.so
opened script file /usr/arm-unknown-linux-gnueabi/usr/lib/libc.so
attempt to open /lib/libc.so.6 succeeded
opened script file /lib/libc.so.6
/lib/libc.so.6: file not recognized: File format not recognized
collect2: ld returned 1 exit status
Your cross-compiling glibc is configured in a wrong way.
In -Wl,-verbose linker says:
attempt to open /usr/arm-unknown-linux-gnueabi/usr/lib/libc.so succeeded
opened script file /usr/arm-unknown-linux-gnueabi/usr/lib/libc.so
So, it used your -L option and was able to open libc.so. But this is not a real .so dynamic library, it is a script (linker script).
Telepathic mode on: Last line of this libc.so script is
GROUP ( /lib/libc.so.6 /usr/lib/libc_nonshared.a AS_NEEDED ( /lib/ld-linux.so.3 ) )
Telepathic mode off
This line contains absolute pathes hardcoded and redirects linker from arm-...abi to the system's libc ignoring most of search-dirs (may be there is some secret option of ld).
Just edit this file (with doing a backup) with any text editor and replace all /lib with /usr/arm-unknown-linux-gnueabi/lib. (My good cross-compiler environment has all pathes in this script replaced with prefix.)
The original script should be used on native compile, native run, but not on cross compiling.
UPDATE: bytesex says http://linux.bytesex.org/cross-compiler.html that there is the same problem with /usr/lib/libpthread.so, do the replace in this file too.
To check other libs, do file -skL *.so|grep text in the lib dir.