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I am trying to build glibc library using bitbake environment inside Yocto Project. I am able to build it successfully but when i alter the C compiler flag in local.conf file it is giving missing attribute error.

build/conf/local.conf file.

here i add one line : 

TARGET_CFLAGS += "-fprofile-arcs -ftest-coverage"

then it is throwing errors : missing attribute((constructor)) support?

I have added this line to local.conf file.

TARGET_CFLAGS += "-fprofile-arcs -ftest-coverage"

Please find the link for config.log file : https://drive.google.com/open?id=14tiQJ8JIFE_tDWt3H9tS8zBBQROcZDNa

Sstate summary: Wanted 7 Found 1 Missed 6 Current 51 (14% match, 89% complete)
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: glibc-2.28-r0 do_configure: configure failed
ERROR: glibc-2.28-r0 do_configure: Function failed: do_configure (log file is located at /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/temp/log.do_configure.19973)
ERROR: Logfile of failure stored in: /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/temp/log.do_configure.19973
Log data follows:
| DEBUG: SITE files ['endian-little', 'bit-32', 'ix86-common', 'common-linux', 'common-glibc', 'i586-linux', 'common']
| DEBUG: Executing shell function autotools_preconfigure
| Previously configured separate build directory detected, cleaning /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/build-i586-poky-linux
| DEBUG: Shell function autotools_preconfigure finished
| DEBUG: Executing python function autotools_aclocals
| DEBUG: SITE files ['endian-little', 'bit-32', 'ix86-common', 'common-linux', 'common-glibc', 'i586-linux', 'common']
| DEBUG: Python function autotools_aclocals finished
| DEBUG: Executing shell function do_configure
| NOTE: Running ../git/configure  --build=x86_64-linux        --host=i586-poky-linux          --target=i586-poky-linux        --prefix=/usr           --exec_prefix=/usr          --bindir=/usr/bin           --sbindir=/usr/sbin         --libexecdir=/usr/libexec           --datadir=/usr/share        --sysconfdir=/etc           --sharedstatedir=/com           --localstatedir=/var        --libdir=/usr/lib           --includedir=/usr/include           --oldincludedir=/usr/include        --infodir=/usr/share/info           --mandir=/usr/share/man         --disable-silent-rules          --disable-dependency-tracking           --with-libtool-sysroot=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot --enable-kernel=3.2.0                 --disable-profile                 --disable-debug --without-gd                 --enable-clocale=gnu                 --with-headers=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot/usr/include                 --without-selinux                 --enable-tunables                 --enable-bind-now                 --enable-stack-protector=strong                 --enable-stackguard-randomization                 --disable-crypt                 --with-default-link                                    --enable-nscd --disable-static
| checking build system type... x86_64-pc-linux-gnu
| checking host system type... i586-poky-linux-gnu
| checking for i586-poky-linux-gcc... i586-poky-linux-gcc  -m32 -march=i586  --sysroot=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot
| checking for suffix of object files... o
| checking whether we are using the GNU C compiler... yes
| checking whether i586-poky-linux-gcc  -m32 -march=i586  --sysroot=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot accepts -g... yes
| checking for gcc... gcc
| checking for i586-poky-linux-readelf... i586-poky-linux-readelf
| checking whether we are using the GNU C++ compiler... yes
| checking whether i586-poky-linux-g++  -m32 -march=i586  --sysroot=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot accepts -g... yes
| checking whether i586-poky-linux-g++  -m32 -march=i586  --sysroot=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot can link programs... no
| checking for sysdeps preconfigure fragments... aarch64 alpha arm hppa i386 m68k microblaze mips nios2 powerpc riscv s390 sh sparc x86_64
| checking for use of fpu sysdeps directories... yes
| checking for -fstack-protector... (cached) no
| checking for -fstack-protector-strong... (cached) no
| checking for -fstack-protector-all... (cached) no
| checking for assembler and linker STT_GNU_IFUNC support... yes
| checking for gcc attribute ifunc support... yes
| checking if compiler warns about alias for function with incompatible types... yes
| checking sysdep dirs... sysdeps/unix/sysv/linux/i386 sysdeps/unix/sysv/linux/x86 sysdeps/x86/nptl sysdeps/i386/nptl sysdeps/unix/sysv/linux sysdeps/nptl sysdeps/pthread sysdeps/gnu sysdeps/unix/inet sysdeps/unix/sysv sysdeps/unix/i386 sysdeps/unix sysdeps/posix sysdeps/i386/i586 sysdeps/i386/fpu sysdeps/x86/fpu sysdeps/i386 sysdeps/x86 sysdeps/wordsize-32 sysdeps/ieee754/float128 sysdeps/ieee754/ldbl-96 sysdeps/ieee754/dbl-64 sysdeps/ieee754/flt-32 sysdeps/ieee754 sysdeps/generic
| checking for a BSD-compatible install... /scratch/work/day8/poky/build/tmp/hosttools/install -c
| checking whether ln -s works... yes
| checking whether /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/as is GNU as... yes
| checking whether /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/ld is GNU ld... yes
| checking for /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/as... /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/as
| checking version of /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/as... 2.31.1.20181224, ok
| checking for /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/ld... /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/ld
| checking version of /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot-native/usr/bin/i586-poky-linux/../../libexec/i586-poky-linux/gcc/i586-poky-linux/8.2.0/ld... 2.31.1.20181224, ok
| checking for gnumake... make
| checking version of make... 4.2.1, ok
| checking for gnumsgfmt... no
| checking for gmsgfmt... no
| checking for msgfmt... no
| checking for makeinfo... makeinfo
| checking version of makeinfo... 6.1, ok
| checking for sed... sed
| checking version of sed... 4.2.2, ok
| checking for gawk... gawk
| checking version of gawk... 4.1.3, ok
| checking for bison... bison
| checking version of bison... 3.0.4, ok
| checking if i586-poky-linux-gcc  -m32 -march=i586  --sysroot=/scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/recipe-sysroot is sufficient to build libc... yes
| checking for i586-poky-linux-nm... i586-poky-linux-nm
| checking for python3... python3
| configure: WARNING:
| *** These auxiliary programs are missing or incompatible versions: msgfmt
| *** some features or tests will be disabled.
| *** Check the INSTALL file for required versions.
| checking LD_LIBRARY_PATH variable... ok
| checking for bash... (cached) /bin/bash
| checking for perl... /scratch/work/day8/poky/build/tmp/hosttools/perl
| checking for install-info... /usr/bin/install-info
| checking for .set assembler directive... no
| checking linker support for protected data symbol... yes
| checking linker support for INSERT in linker script... no
| checking for broken __attribute__((alias()))... no
| checking whether to put _rtld_local into .sdata section... no
| checking whether to use .ctors/.dtors header and trailer... configure: error: missing __attribute__ ((constructor)) support??
| NOTE: The following config.log files may provide further information.
| NOTE: /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/build-i586-poky-linux/config.log
| ERROR: configure failed
| WARNING: exit code 1 from a shell command.
| ERROR: Function failed: do_configure (log file is located at /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/temp/log.do_configure.19973)
ERROR: Task (/scratch/work/day8/poky/meta/recipes-core/glibc/glibc_2.28.bb:do_configure) failed with exit code '1'
NOTE: Tasks Summary: Attempted 388 tasks of which 387 didn't need to be rerun and 1 failed.

Summary: 1 task failed:
  /scratch/work/day8/poky/meta/recipes-core/glibc/glibc_2.28.bb:do_configure
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.
pmod
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Ajay.kundu
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  • It looks as compilation of conftest with ctor/dtor functions failed for some reason - the original error print is not output to log that you show, could you share contents of /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/build-i586-poky-linux/config.log - error should be printed there – pmod Jan 23 '19 at 22:43
  • Please find the link to config.log file : https://drive.google.com/open?id=14tiQJ8JIFE_tDWt3H9tS8zBBQROcZDNa – Ajay.kundu Jan 25 '19 at 05:09

1 Answers1

2

Since you enabled code coverage support by adding these CFLAGS -fprofile-arcs -ftest-coverage - these CFLAGS must have been propagated to compilation of conftest binary that is built by autoconf. This binary is built to test if one specific feature (as it says "whether to use .ctors/.dtors header and trailer") is supported or not (actually, there are several similar builds occur in configuration process to test for specific features). I cannot prove that, because detailed error prints should be in specific log file that you haven't shared:

| NOTE: The following config.log files may provide further information.
| NOTE: /scratch/work/day8/poky/build/tmp/work/i586-poky-linux/glibc/2.28-r0/build-i586-poky-linux/config.log

But, I bet, it should contain something like:

conftest.c:(.text+0xae): undefined reference to `__gcov_init'
...
collect2: ld returned 1 exit status

This is because the code is instrumented with some function calls and linker can't find its implementations (even in these conftest binaries where they are absolutely have no sense).

It is possible to skip this particular configuration test by specifying corresponding configuration option - libc_cv_ctors_header (in this case, name is taken from glib's configure.ac) - adding EXTRA_OECONF to local.conf (e.g. EXTRA_OECONF = "libc_cv_ctors_header=yes"), but those flags, actually affect all such tests, and we shouldn't want to guess yes/no values and so on.

Thus, it'd be better to make linker be aware of coverage support - i.e. provide the same flags for TARGET_LDFLAGS:

TARGET_LDFLAGS += "-fprofile-arcs -ftest-coverage"
pmod
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  • Thank you so much, sir, It is still throwing the same error. I have provided the link to config.log file. – Ajay.kundu Jan 25 '19 at 05:08
  • Here is link : https://drive.google.com/open?id=14tiQJ8JIFE_tDWt3H9tS8zBBQROcZDNa – Ajay.kundu Jan 25 '19 at 05:09
  • Sir, I am able to generate GCNO files for a single recipe but unable to get GCDA files even after running the image on QEMU Emulator eg-mpg123 player. Please help where to find these files. – Ajay.kundu Jan 25 '19 at 06:00
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    Please read http://www.chennainerd.in/blog/2014/06/08/gcov-c-slash-c-plus-plus-code-coverage-testing-tool/ They should be generated in the folder where program is run (should exit successfully to generate). You probably have read-only fs and you can set env. variable to override location, e.g. before running program: export GCOV_PREFIX=/tmp – pmod Jan 25 '19 at 09:56
  • Sir, I am able to achieve all the steps provided in the above link but when i build core-image-sato for qemuarm and run it. It is not producing .gcda files on locations where they are compiled. I run it using command runqemu qemuarm It is not generating any gcda. – Ajay.kundu Jan 25 '19 at 11:35
  • @Ajay.kundu what do you run on target, i.e. you should run some program on target and it must complete, i.e. exit with 0 code. – pmod Jan 25 '19 at 12:52
  • Sir, I am running Linux custom image generated after yocto project build process through bitbake. The generated custom image runs on QEMU emulator to mimic ARM board. Thank You – Ajay.kundu Jan 26 '19 at 12:06
  • My basic goal is to integrate GCOV and Yocto project so that we are able to get coverage report. – Ajay.kundu Jan 28 '19 at 09:29
  • @Ajay.kundu right, you run linux image in QEMU emulator, then you should login (ssh) to that running instance and run some program there to get coverage report. You can't just get coverage report for the whole linux image. Please identify which program(s) you'd like to run on target, i.e. inside linux running on qemu. – pmod Jan 28 '19 at 10:47
  • Thank You so much, sir, I am able to complete the required task. – Ajay.kundu Jan 28 '19 at 13:19
  • @Ajay.kundu Great! I am glad that it helped – pmod Jan 28 '19 at 13:36