Hi,
I have some query regarding the way gcc resolves the search directory
for standard libraries like libc. When I run command "gcc -v test.c" i
get the following output
Reading specs from /usr/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-__cxa_atexit
--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 -D__GNUC__=3
-D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=2 -D__GXX_ABI_VERSION=102
-D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__
-D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix
-D__NO_INLINE__ -D__STDC_HOSTED__=1 -Acpu=i386 -Amachine=i386 -Di386
-D__i386 -D__i386__ -D__tune_i386__ test.c -quiet -dumpbase test.c
-version -o /tmp/ccAc9Ljz.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:
#include <...> search starts here:
/usr/local/include
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/include
/usr/include
End of search list.
as -V -Qy -o /tmp/cc8Ge9kX.o /tmp/ccAc9Ljz.s
GNU assembler version 2.13.90.0.18 (i386-redhat-linux) using BFD version
2.13.90.0.18 20030206
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/collect2 --eh-frame-hdr -m
elf_i386 -dynamic-linker /lib/ld-linux.so.2
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crt1.o
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crti.o
/usr/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/../../.. /tmp/cc8Ge9kX.o
-lgcc -lgcc_eh -lc -lgcc -lgcc_eh
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/crtend.o
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crtn.o
As the last section of the output illustrated that the location that the
linker looks for libraries like libc etc is
"-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.2" and
"-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../.."
Is there anyway i can change the default search location.
I believe that by passing my own spec file to gcc as gcc
-specs=<myspecs> test.c, i can change the default include path and also
the path to look for for crt0.o etc.
Regards,
Sumit Kumar Jain
