LTP Configuration Debugging Analysis

Flex (Lex) Error Resolution

  • Issue: Linker error undefined reference to yywrap due to missing Flex library (-lfl).

  • Resolution: Configure script auto-detected and added -lfl to linker flags:

    configure:4221: gcc -o conftest -DDISABLE_DMAPI conftest.c -lfl >&5
configure:4221: $? = 0 # Success!

  • Action: Ensure flex-devel is installed (verified in logs).

Missing Headers

Critical Missing Headers

Successful Header Checks

  • Core headers found:

    • pthread.h, libaio.h, sys/epoll.h

    • openssl/sha.h, sys/prctl.h

Kernel Headers Path Issue

  • Error:

    /usr/src/kernels/3.10.0-1160.118.1.el7.x86_64/include/linux/module.h:9:24: fatal error: linux/list.h: No such file or directory

  • Root Cause: Kernel headers missing or mislinked.

  • Fix:

    sudo yum install kernel-devel-$(uname -r)
ln -s /usr/src/kernels/$(uname -r) /usr/src/linux

Security Hardening (_FORTIFY_SOURCE)

  • Test Failed:

    conftest.c:42:3: error: #error Compiling without optimizations

  • Reason: _FORTIFY_SOURCE=2 requires -O2 optimizations.

  • Fix: Re-run configure with:

    CFLAGS="-O2" ./configure [options]

Ptrace Support

  • Detected:

    • sys/ptrace.h, linux/ptrace.h

    • struct pt_regs

  • Missing:

    • struct user_regs_struct

    • struct ptrace_peeksiginfo_args

Final Recommendations

  1. Install missing packages:

    sudo yum install kernel-devel-$(uname -r) xfsprogs-devel libcap-devel openssl-devel

  2. Re-run configure with optimizations:

    CFLAGS="-O2" ./configure --with-linux-version=$(uname -r) --with-linux-dir=/usr/src/kernels/$(uname -r)

  3. Verify kernel headers:

    ls /usr/src/kernels/$(uname -r)/include/linux/module.h

  4. Build LTP:

    make && sudo make install