Hi Folks,
Been stumped with the sandbox a bit on getting sparse to check code, with the issue being very similar to the thread here: http://lkml.org/lkml/2005/5/17/222 though was unable to trace the thread to a conclusion to the specific problem itself. other than pointing at a bug in kbuild system as per http://lkml.org/lkml/2005/5/18/293. But U-boot version of kbuild does really seem to do "gcc --print-file-name=include"
Commands: make sandbox_defconfig make V=1 C=2 <snip> sparse -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/4.2.3/include -Wp,-MD,common/.hush.o.d -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/4.2.3/include -D__KERNEL__ -D__U_BOOT__ -Iinclude -include include/linux/autoconf.h -fno-builtin -ffreestanding -nostdinc -Wall -pipe -fno-strict-aliasing -P -fno-common -Os -Dmalloc=u_boot_malloc -Dfree=u_boot_free -Drealloc=u_boot_realloc -Dread=u_boot_read -Dwrite=u_boot_write -Dopen=u_boot_open -Dclose=u_boot_close -Dlseek=u_boot_lseek -Dperror=u_boot_perror -Derrno=u_boot_errno -Dgetc=u_boot_getc -Dputc=u_boot_putc -Dfgetc=u_boot_fgetc -Dfputc=u_boot_fputc -Dfgets=u_boot_fgets -Dfputs=u_boot_fputs -Dsetenv=u_boot_setenv -Dgetenv=u_boot_getenv -Dprintf=u_boot_printf -Dglob=u_boot_glob -Dglobfree=u_boot_globfree -g -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(hush)" -D"KBUILD_MODNAME=KBUILD_STR(hush)" common/hush.c ; include/stdio.h:4:11: error: unable to open 'stdarg.h' make[1]: *** [common/hush.o] Error 1 make: *** [common] Error 2
Strace says: <snip> open("include/stdio.h", O_RDONLY) = 4 read(4, "#ifndef __STDIO_H\n#define __STDI"..., 8192) = 1151 mmap(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcfa8604000 mmap(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcfa85fc000 read(4, "", 8192) = 0 close(4) = 0 open("include/stdarg.h", O_RDONLY) = -1 ENOENT (No such file or directory) write(2, "include/stdio.h:4:11: error: una"..., 55include/stdio.h:4:11: error: unable to open 'stdarg.h'
If I do a 'ln -s /usr/lib/gcc/x86_64-linux-gnu/4.2.3/include/stdarg.h include/' it goes thru this specific issue. the next issue is that it compiles on a 32bit FC5, but fails on 64bit Ubuntu8.04.
Version of U-Boot V2: latest in git. machine, gcc and sparse versions: uname -a: Linux xxxxx 2.6.24-16-generic #1 SMP Thu Apr 10 12:47:45 UTC 2008 x86_64 GNU/Linux gcc --version: gcc (GCC) 4.2.3 (Ubuntu 4.2.3-2ubuntu7) Sparse: tried with 2 of them: [1] http://kernel.org/pub/software/devel/sparse/dist/sparse-0.4.1.tar.gz [2] http://www.codemonkey.org.uk/projects/git-snapshots/sparse/sparse-2008-05-01...
Regards, Nishanth Menon