IGT command line tools load many unnecessary libraries, because they use
libigt.so which links in a huge amount of libraries:

$ ldd libigt.so 
        linux-vdso.so.1 (0x00007ffdf24d6000)
        libcairo.so.2 => /usr/lib/x86_64-linux-gnu/libcairo.so.2
(0x00007f8d5daa4000)
        libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
(0x00007f8d5d78e000)
        libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2
(0x00007f8d5d57d000)
        libdw.so.1 => /usr/lib/x86_64-linux-gnu/libdw.so.1 (0x00007f8d5d331000)
        libkmod.so.2 => /lib/x86_64-linux-gnu/libkmod.so.2 (0x00007f8d5d11a000)
        libprocps.so.6 => /lib/x86_64-linux-gnu/libprocps.so.6
(0x00007f8d5cef6000)
        libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007f8d5ccd8000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8d5c93a000)
        libpciaccess.so.0 => /usr/lib/x86_64-linux-gnu/libpciaccess.so.0
(0x00007f8d5c731000)
        libpixman-1.so.0 => /usr/lib/x86_64-linux-gnu/libpixman-1.so.0
(0x00007f8d5c48c000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8d5c284000)
        libdrm_intel.so.1 => /usr/lib/x86_64-linux-gnu/libdrm_intel.so.1
(0x00007f8d5c061000)
        libunwind.so.8 => /usr/lib/x86_64-linux-gnu/libunwind.so.8
(0x00007f8d5be46000)
        libgsl.so.23 => /usr/lib/x86_64-linux-gnu/libgsl.so.23
(0x00007f8d5b9e4000)
        libgslcblas.so.0 => /usr/lib/x86_64-linux-gnu/libgslcblas.so.0
(0x00007f8d5b7a5000)
        libasound.so.2 => /usr/lib/x86_64-linux-gnu/libasound.so.2
(0x00007f8d5b49e000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f8d5b27f000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8d5ae8e000)
        libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
(0x00007f8d5ac49000)
        libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6
(0x00007f8d5a995000)
        libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16
(0x00007f8d5a763000)
        libxcb-shm.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0
(0x00007f8d5a560000)
        libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1
(0x00007f8d5a338000)
        libxcb-render.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render.so.0
(0x00007f8d5a12b000)
        libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1
(0x00007f8d59f21000)
        libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6
(0x00007f8d59be9000)
        libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6
(0x00007f8d599d7000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f8d597ba000)
        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f8d59548000)
        libelf.so.1 => /usr/lib/x86_64-linux-gnu/libelf.so.1
(0x00007f8d5932e000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8d5912a000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f8d58f04000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0
(0x00007f8d58cf4000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f8d5e035000)
        libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0
(0x00007f8d58a70000)
        libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1
(0x00007f8d5883e000)
        libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6
(0x00007f8d5863a000)
        libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6
(0x00007f8d58434000)
        liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1
(0x00007f8d58218000)
        libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20
(0x00007f8d57efd000)
        libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f8d57ce8000)
        libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0
(0x00007f8d57ad3000)


For example "intel_gpu_top" seems to need just these symbols from it:
$ readelf -s intel_gpu_top |grep igt
    10: 0000000000000000     0 FUNC    GLOBAL DEFAULT  UND igt_perf_open_group
    28: 0000000000000000     0 FUNC    GLOBAL DEFAULT  UND igt_perf_open
    58: 00000000002060a0   200 OBJECT  GLOBAL DEFAULT   25 igt_subtest_jmpbuf
   113: 0000000000000000     0 FUNC    GLOBAL DEFAULT  UND igt_perf_open_group
   124: 00000000002060a0   200 OBJECT  GLOBAL DEFAULT   25 igt_subtest_jmpbuf
   139: 0000000000000000     0 FUNC    GLOBAL DEFAULT  UND igt_perf_open

And sone other functions it needs are some json and printing helpers + normal
libc stuff.  It does NOT need freetype, pixman, Cairo, ALSA sound, X11
libraries, libglsl etc stuff brought in by libigt.

It's annoying to need to install these redundant dependencies on e.g. headless
media transcoding server if one just wants to use intel_gpu_top to monitor GPU
utilization.

Wouldn't it make sense to split libigt up a bit, e.g. to GUI and non-GUI bits?