Anyway, here is the short "skinny":
/etc/ld.so.nohwcap
/etc/ld.so.preload
These two files are not found. Quite honestly I have no idea how important
these files are. Probably not very important, so let's not worry about them
just yet.
Your library you were worried about in your other post successfully opened
here, and then a few lines later the file handle 3 was closed also
successfully.
open("/lib/arm-linux-gnueabihf/libEBBLibrary.so", O_RDONLY|O_CLOEXEC) = 3
I'm thinking the below is your real failure.
open("/dev/spidev2.0", O_RDWR) = -1 ENOENT (No such file or directory)
On Sun, Jan 24, 2016 at 4:27 PM, William Hermans <yyrk...@gmail.com> wrote:
> Which version of gcc are you running, and is this native, or cross compile
> ?
>
> On Sun, Jan 24, 2016 at 4:25 PM, William Hermans <yyrk...@gmail.com>
> wrote:
>
>> From this man page: http://man7.org/linux/man-pages/man8/ld.so.8.html
>>
>> FILES
>>
>> */lib/ld.so*
>> a.out dynamic linker/loader
>> */lib/ld-linux.so.*{*1*,*2*}
>> ELF dynamic linker/loader
>> */etc/ld.so.cache*
>> File containing a compiled list of directories in which to
>> search for shared objects and an ordered list of candidate
>> shared objects.
>> */etc/ld.so.preload*
>> File containing a whitespace-separated list of ELF shared
>> objects to be loaded before the program.
>> lib*.so*
>> shared objects
>>
>> The odd part, is these files, which are configurations files for ld,
>> should have been installed when ld was installed. I've never seen this
>> personally. Which leads me to believe that perhaps you've followed some
>> convoluted instructions on how to do something without understanding it.
>> *Or* perhaps you missed a step when following someone elses instructions.
>>
>> Anyway, if i knew which package ld, and these ld config files were part
>> of I'd suggest that you check to make sure you either have installed, or
>> installed correctly. e.g. sometimes someone will tell you to add an apt
>> repo to your apt.lst file - Which turns out to be a really bad idea.
>>
>> Which packages have to you installed for development ? Is
>> *build-essential* installed ? perhaps an *apt-get install
>> build-essential* will clear things up ?
>>
>> On Sun, Jan 24, 2016 at 4:04 PM, Dean <dean.b...@gmail.com> wrote:
>>
>>> I am trying to decipher my strace. My setup is Linux beaglebone
>>> 4.1.12-ti-r29 #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015 armv7l GNU/Linux
>>> BeagleBoard.org Debian Image 2015-11-12. I am not sure on how to interpet
>>> my findings. In particular of the files that are missing is that because I
>>> need an update or do they arise out a make file that simply is not working
>>> or incorrect. The CMake version that I am using is 3.0.2. Thanks for
>>> replies in advance.
>>>
>>>
>>>
>>> execve("./LCDApp", ["./LCDApp"], [/* 19 vars */]) = 0
>>>
>>> brk(0) = 0x4bf000
>>>
>>> uname({sys="Linux", node="beaglebone", ...}) = 0
>>>
>>> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
>>> directory)
>>>
>>> mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f95000
>>>
>>> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
>>> directory)
>>>
>>> open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
>>>
>>> fstat64(3, {st_mode=S_IFREG|0644, st_size=26752, ...}) = 0
>>>
>>> mmap2(NULL, 26752, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6f8e000
>>>
>>> close(3) = 0
>>>
>>> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
>>> directory)
>>>
>>> open("/lib/arm-linux-gnueabihf/tls/v7l/neon/vfp/libEBBLibrary.so",
>>> O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
>>>
>>> stat64("/lib/arm-linux-gnueabihf/tls/v7l/neon/vfp", 0xbea01370) = -1
>>> ENOENT (No such file or directory)
>>>
>>> open("/lib/arm-linux-gnueabihf/tls/v7l/neon/libEBBLibrary.so",
>>> O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
>>>
>>> open("/lib/arm-linux-gnueabihf/libEBBLibrary.so", O_RDONLY|O_CLOEXEC) =
>>> 3
>>>
>>> read(3,
>>> "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0`m\0\0004\0\0\0"..., 512) =
>>> 512
>>>
>>> lseek(3, 95252, SEEK_SET) = 95252
>>>
>>> read(3,
>>> "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>>> 1200) = 1200
>>>
>>> lseek(3, 63425, SEEK_SET) = 63425
>>>
>>> read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"...,
>>> 51) = 51
>>>
>>> fstat64(3, {st_mode=S_IFREG|0755, st_size=96452, ...}) = 0
>>>
>>> mmap2(NULL, 128964, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>>> 0) = 0xb6f50000
>>>
>>> mprotect(0xb6f5f000, 65536, PROT_NONE) = 0
>>>
>>> mmap2(0xb6f6f000, 4096, PROT_READ|PROT_WRITE,
>>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0xb6f6f000
>>>
>>> close(3) = 0
>>>
>>> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
>>> directory)
>>>
>>> open("/usr/lib/arm-linux-gnueabihf/libstdc++.so.6", O_RDONLY|O_CLOEXEC)
>>> = 3
>>>
>>> read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0
>>> n\4\0004\0\0\0"..., 512) = 512
>>>
>>> open("/lib/arm-linux-gnueabihf/libEBBLibrary.so", O_RDONLY|O_CLOEXEC) =
>>> 3
>>>
>>> read(3,
>>> "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0`m\0\0004\0\0\0"..., 512) =
>>> 512
>>>
>>> lseek(3, 95252, SEEK_SET) = 95252
>>>
>>> read(3,
>>> "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>>> 1200) = 1200
>>>
>>> lseek(3, 63425, SEEK_SET) = 63425
>>>
>>> read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"...,
>>> 51) = 51
>>>
>>> fstat64(3, {st_mode=S_IFREG|0755, st_size=96452, ...}) = 0
>>>
>>> mmap2(NULL, 128964, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>>> 0) = 0xb6f50000
>>>
>>> mprotect(0xb6f5f000, 65536, PROT_NONE) = 0
>>>
>>> mmap2(0xb6f6f000, 4096, PROT_READ|PROT_WRITE,
>>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0xb6f6f000
>>>
>>> close(3) = 0
>>>
>>> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
>>> directory)
>>>
>>> open("/usr/lib/arm-linux-gnueabihf/libstdc++.so.6", O_RDONLY|O_CLOEXEC)
>>> = 3
>>>
>>> read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0
>>> n\4\0004\0\0\0"..., 512) = 512
>>>
>>> lseek(3, 100684, SEEK_SET) = 100684
>>>
>>> read(3,
>>> "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>>> 1520) = 1520
>>>
>>> lseek(3, 65940, SEEK_SET) = 65940
>>>
>>> read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"...,
>>> 53) = 53
>>>
>>> fstat64(3, {st_mode=S_IFREG|0755, st_size=102204, ...}) = 0
>>>
>>> mmap2(NULL, 139836, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>>> 0) = 0xb6ceb000
>>>
>>> mprotect(0xb6cfb000, 61440, PROT_NONE) = 0
>>>
>>> mmap2(0xb6d0a000, 8192, PROT_READ|PROT_WRITE,
>>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0xb6d0a000
>>>
>>> mmap2(0xb6d0c000, 4668, PROT_READ|PROT_WRITE,
>>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6d0c000
>>>
>>> close(3) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f8c000
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f8b000
>>>
>>> set_tls(0xb6f8b4c0, 0xb6f98050, 0xb6f8bbb8, 0xb6f8b4c0, 0xb6f98050) = 0
>>>
>>> mprotect(0xb6df6000, 8192, PROT_READ) = 0
>>>
>>> mprotect(0xb6d0a000, 4096, PROT_READ) = 0
>>>
>>> mprotect(0xb6e97000, 4096, PROT_READ) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f8a000
>>>
>>> mprotect(0xb6f44000, 16384, PROT_READ) = 0
>>>
>>> mprotect(0xb6f97000, 4096, PROT_READ) = 0
>>>
>>> munmap(0xb6f8e000, 26752) = 0
>>>
>>> set_tid_address(0xb6f8b068) = 650
>>>
>>> set_robust_list(0xb6f8b070, 12) = 0
>>>
>>> rt_sigaction(SIGRTMIN, {0xb6cefd9d, [], SA_RESTORER|SA_SIGINFO,
>>> 0xb6d34ae1}, NULL, 8) = 0
>>>
>>> rt_sigaction(SIGRT_1, {0xb6cefcbd, [],
>>> SA_RESTORER|SA_RESTART|SA_SIGINFO, 0xb6d34ae1}, NULL, 8) = 0
>>>
>>> rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
>>>
>>> getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
>>>
>>> futex(0xb6f4ece8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
>>>
>>> futex(0xb6f4ecdc, FUTEX_WAKE_PRIVATE, 2147483647) = 0
>>>
>>> fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f94000
>>>
>>> mprotect(0xb6df6000, 8192, PROT_READ) = 0
>>>
>>> mprotect(0xb6d0a000, 4096, PROT_READ) = 0
>>>
>>> mprotect(0xb6e97000, 4096, PROT_READ) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f8a000
>>>
>>> mprotect(0xb6f44000, 16384, PROT_READ) = 0
>>>
>>> mprotect(0xb6f97000, 4096, PROT_READ) = 0
>>>
>>> munmap(0xb6f8e000, 26752) = 0
>>>
>>> set_tid_address(0xb6f8b068) = 650
>>>
>>> set_robust_list(0xb6f8b070, 12) = 0
>>>
>>> rt_sigaction(SIGRTMIN, {0xb6cefd9d, [], SA_RESTORER|SA_SIGINFO,
>>> 0xb6d34ae1}, NULL, 8) = 0
>>>
>>> rt_sigaction(SIGRT_1, {0xb6cefcbd, [],
>>> SA_RESTORER|SA_RESTART|SA_SIGINFO, 0xb6d34ae1}, NULL, 8) = 0
>>>
>>> rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
>>>
>>> getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
>>>
>>> futex(0xb6f4ece8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
>>>
>>> futex(0xb6f4ecdc, FUTEX_WAKE_PRIVATE, 2147483647) = 0
>>>
>>> fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f94000
>>>
>>> write(1, "Starting EBB LCD Character Displ"..., 43) = 43
>>>
>>> brk(0) = 0x4bf000
>>>
>>> brk(0x4e0000) = 0x4e0000
>>>
>>> open("/dev/spidev2.0", O_RDWR) = -1 ENOENT (No such file or directory)
>>>
>>> dup(2) = 3
>>>
>>> fcntl64(3, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)
>>>
>>> fstat64(3, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f93000
>>>
>>> _llseek(3, 0, 0xbea01838, SEEK_CUR) = -1 ESPIPE (Illegal seek)
>>>
>>> write(3, "SPI: Can't open device.: No such"..., 51) = 51
>>>
>>> close(3) = 0
>>>
>>> munmap(0xb6f93000, 4096) = 0
>>>
>>> ioctl(-1, 0x40046b04, 0x4bf024) = -1 EBADF (Bad file descriptor)
>>>
>>> dup(2) = 3
>>>
>>> fcntl64(3, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)
>>>
>>> fstat64(3, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f93000
>>>
>>> _llseek(3, 0, 0xbea01968, SEEK_CUR) = -1 ESPIPE (Illegal seek)
>>>
>>> write(3, "SPI: Can't set max speed HZ: Bad"..., 49) = 49
>>>
>>> lose(3) = 0
>>>
>>> munmap(0xb6f93000, 4096) = 0
>>>
>>> ioctl(-1, 0x40206b00, 0xbea01a30) = -1 EBADF (Bad file descriptor)
>>>
>>> dup(2) = 3
>>>
>>> fcntl64(3, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)
>>>
>>> fstat64(3, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
>>>
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>>> 0) = 0xb6f93000
>>>
>>> _llseek(3, 0, 0xbea01910, SEEK_CUR) = -1 ESPIPE (Illegal seek)
>>>
>>> write(3, "SPI: SPI_IOC_MESSAGE Failed: Bad"..., 49) = 49
>>>
>>> close(3) = 0
>>>
>>> munmap(0xb6f93000, 4096) = 0
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
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>>
>>
>
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For more options, visit http://beagleboard.org/discuss
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