Error compiling at "Building CXX object CMakeFiles/dlib_.dir/src/dlib.cpp.o"

[timbennett]

I'm trying to compile dlib's Python interface fresh on Ubuntu 14.04 LTS via command line, but can't get past the error below. (Dropping DLIB_NO_GUI_SUPPORT causes the build to fail earlier in the process.) As far as I know my software is all up-to-date (notwithstanding being an outdated version of Ubuntu).

The last thing I did before attempting this installation was install OpenCV in a virtualenv using this guide: http://www.pyimagesearch.com/2015/06/22/install-opencv-3-0-and-python-2-7-on-ubuntu/

The installation fails regardless of whether I run it in the virtualenv, via pip, or in /examples/ with cmake directly.

user@local:~/dlib-18.18# python setup.py install --yes DLIB_NO_GUI_SUPPORT

running install
running bdist_egg
running build
Detected Python architecture: 64bit
Removing build directory //dlib-18.18/./tools/python/build
Configuring cmake ...
-- The C compiler identification is GNU 4.8.4
-- The CXX compiler identification is GNU 4.8.4
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Boost version: 1.54.0
-- Found the following Boost libraries:
-- python
-- Found PythonLibs: /usr/lib/x86_64-linux-gnu/libpython2.7.so (found suitable version "2.7.6", minimum required is "2.6")
-- USING BOOST_LIBS: /usr/lib/x86_64-linux-gnu/libboost_python.so
-- USING PYTHON_LIBS: /usr/lib/x86_64-linux-gnu/libpython2.7.so
-- Enabling SSE4 instructions
-- Looking for png_create_read_struct
-- Looking for png_create_read_struct - found
-- Looking for jpeg_read_header
-- Looking for jpeg_read_header - found
-- Searching for BLAS and LAPACK
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of void*
-- Check size of void* - done
-- Found LAPACK library
-- Found ATLAS BLAS library
-- Looking for cblas_ddot
-- Looking for cblas_ddot - found
-- Check for STD namespace
-- Check for STD namespace - found
-- Looking for C++ include iostream
-- Looking for C++ include iostream - found
-- Configuring done
-- Generating done
-- Build files have been written to: //dlib-18.18/tools/python/build
Build using cmake ...
Scanning dependencies of target dlib
[ 1%] Building CXX object dlib_build/CMakeFiles/dlib.dir/base64/base64_kernel_1.o
[ 3%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bigint/bigint_kernel_1.o
[ 5%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bigint/bigint_kernel_2.o
[ 6%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bit_stream/bit_stream_kernel_1.o
[ 8%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_decoder/entropy_decoder_kernel_1.o
[ 10%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_decoder/entropy_decoder_kernel_2.o
[ 12%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_encoder/entropy_encoder_kernel_1.o
[ 13%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_encoder/entropy_encoder_kernel_2.o
[ 15%] Building CXX object dlib_build/CMakeFiles/dlib.dir/md5/md5_kernel_1.o
[ 17%] Building CXX object dlib_build/CMakeFiles/dlib.dir/tokenizer/tokenizer_kernel_1.o
[ 18%] Building CXX object dlib_build/CMakeFiles/dlib.dir/unicode/unicode.o
[ 20%] Building CXX object dlib_build/CMakeFiles/dlib.dir/data_io/image_dataset_metadata.o
[ 22%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockets/sockets_kernel_1.o
[ 24%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bsp/bsp.o
[ 25%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dir_nav/dir_nav_kernel_1.o
[ 27%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dir_nav/dir_nav_kernel_2.o
[ 29%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dir_nav/dir_nav_extensions.o
[ 31%] Building CXX object dlib_build/CMakeFiles/dlib.dir/linker/linker_kernel_1.o
[ 32%] Building CXX object dlib_build/CMakeFiles/dlib.dir/logger/extra_logger_headers.o
[ 34%] Building CXX object dlib_build/CMakeFiles/dlib.dir/logger/logger_kernel_1.o
[ 36%] Building CXX object dlib_build/CMakeFiles/dlib.dir/logger/logger_config_file.o
[ 37%] Building CXX object dlib_build/CMakeFiles/dlib.dir/misc_api/misc_api_kernel_1.o
[ 39%] Building CXX object dlib_build/CMakeFiles/dlib.dir/misc_api/misc_api_kernel_2.o
[ 41%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockets/sockets_extensions.o
[ 43%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockets/sockets_kernel_2.o
[ 44%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockstreambuf/sockstreambuf.o
[ 46%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockstreambuf/sockstreambuf_unbuffered.o
[ 48%] Building CXX object dlib_build/CMakeFiles/dlib.dir/server/server_kernel.o
[ 50%] Building CXX object dlib_build/CMakeFiles/dlib.dir/server/server_iostream.o
[ 51%] Building CXX object dlib_build/CMakeFiles/dlib.dir/server/server_http.o
[ 53%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/multithreaded_object_extension.o
[ 55%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threaded_object_extension.o
[ 56%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threads_kernel_1.o
[ 58%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threads_kernel_2.o
[ 60%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threads_kernel_shared.o
[ 62%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/thread_pool_extension.o
[ 63%] Building CXX object dlib_build/CMakeFiles/dlib.dir/timer/timer.o
[ 65%] Building CXX object dlib_build/CMakeFiles/dlib.dir/stack_trace.o
[ 67%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_loader/png_loader.o
[ 68%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_saver/save_png.o
[ 70%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_loader/jpeg_loader.o
[ 72%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_saver/save_jpeg.o
Linking CXX static library libdlib.a
[ 72%] Built target dlib
Scanning dependencies of target dlib_
[ 74%] Building CXX object CMakeFiles/dlib_.dir/src/dlib.cpp.o
c++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See file:///usr/share/doc/gcc-4.8/README.Bugs for instructions.
make[2]: *** [CMakeFiles/dlib_.dir/src/dlib.cpp.o] Error 4
make[1]: *** [CMakeFiles/dlib_.dir/all] Error 2
make: *** [all] Error 2
error: cmake build failed!

[davisking]

I mainly develop in that version of ubuntu and haven't seen this error. Have you tried with the latest sources in github?

[timbennett]

I just tried building from this repo's master.zip and got the same result.

These lines from CMakeError.log might be relevant:

Determining if the pthread_create exist failed with the following output:
Change Dir: /~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp

Run Build Command:/usr/bin/make "cmTryCompileExec2586865373/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec2586865373.dir/build.make CMakeFiles/cmTryCompileExec2586865373.dir/build
make[1]: Entering directory '/~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp/CMakeFiles 1
Building C object CMakeFiles/cmTryCompileExec2586865373.dir/CheckSymbolExists.c.o
/usr/bin/cc    -o CMakeFiles/cmTryCompileExec2586865373.dir/CheckSymbolExists.c.o   -c /~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTryCompileExec2586865373
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTryCompileExec2586865373.dir/link.txt --verbose=1
/usr/bin/cc       CMakeFiles/cmTryCompileExec2586865373.dir/CheckSymbolExists.c.o  -o cmTryCompileExec2586865373 -rdynamic 
CMakeFiles/cmTryCompileExec2586865373.dir/CheckSymbolExists.c.o: In function 'main':
CheckSymbolExists.c:(.text+0x16): undefined reference to 'pthread_create'
collect2: error: ld returned 1 exit status
make[1]: Leaving directory '/~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp'
make[1]: *** [cmTryCompileExec2586865373] Error 1
make: *** [cmTryCompileExec2586865373/fast] Error 2

File /~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_create
  return ((int*)(&pthread_create))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp

Run Build Command:/usr/bin/make "cmTryCompileExec4045768290/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec4045768290.dir/build.make CMakeFiles/cmTryCompileExec4045768290.dir/build
make[1]: Entering directory '/~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp/CMakeFiles 1
Building C object CMakeFiles/cmTryCompileExec4045768290.dir/CheckFunctionExists.c.o
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTryCompileExec4045768290.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-2.8/Modules/CheckFunctionExists.c
Linking C executable cmTryCompileExec4045768290
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTryCompileExec4045768290.dir/link.txt --verbose=1
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTryCompileExec4045768290.dir/CheckFunctionExists.c.o  -o cmTryCompileExec4045768290 -rdynamic -lpthreads 
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
make[1]: Leaving directory '/~/dlib-master/tools/python/build/CMakeFiles/CMakeTmp'
make[1]: *** [cmTryCompileExec4045768290] Error 1
make: *** [cmTryCompileExec4045768290/fast] Error 2

I definitely have these installed:

/lib/x86_64-linux-gnu/libpthread.so.0
/lib/x86_64-linux-gnu/libpthread-2.19.so

I wonder if there are other dependencies I'm missing.

[davisking]

That would be a problem :) Can you compile the regular C++ examples?

[e-fominov]

/usr/bin/ld: cannot find -lpthreads

phtreads != pthread

[timbennett]

I think my problem was insufficient RAM. That will teach me for cheaping out on my hosting. I've added a 1GB swapfile and am currently compiling to see if that's sufficient (have already made it past the error above).

Edit: 1GB was not enough, but with 4GB it successfully compiled and is running now.

[davisking]

Cool :)

[alpha2k5]

-- Build files have been written to: /home/odroid/srsLTE/build
odroid@odroid:~/srsLTE/build$ make
[ 34%] Built target rrc_asn1
[ 34%] Built target srslte_asn1
[ 34%] Built target srslte_enb
[ 34%] Built target srslte_agc
[ 34%] Built target srslte_ch_estimation
[ 34%] Built target srslte_phy_common
[ 34%] Built target srslte_fec
[ 34%] Built target srslte_mimo
[ 34%] Built target srslte_phch
[ 34%] Built target srslte_sync
[ 34%] Built target srslte_utils
[ 34%] Built target srslte_channel
[ 34%] Built target srslte_dft
[ 34%] Built target srslte_io
[ 34%] Built target srslte_modem
[ 34%] Built target srslte_resampling
[ 34%] Built target srslte_scrambling
[ 34%] Built target srslte_ue
[ 34%] Built target srslte_phy
-- Generating build_info.h
[ 34%] Built target gen_build_info
[ 34%] Building CXX object lib/src/common/CMakeFiles/srslte_common.dir/log_filter.cc.o
/home/odroid/srsLTE/lib/src/common/log_filter.cc: In member function 'void srslte::log_filter::now_time(char*, uint32_t)':
/home/odroid/srsLTE/lib/src/common/log_filter.cc:223:53: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'uint64_t {aka long long unsigned int}' [-Werror=format=]
snprintf(buffer, buffer_len, "%ld", usec_epoch);
^
/home/odroid/srsLTE/lib/src/common/log_filter.cc:232:53: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'uint64_t {aka long long unsigned int}' [-Werror=format=]
snprintf(buffer, buffer_len, "%ld", usec_epoch);
^
cc1plus: all warnings being treated as errors
lib/src/common/CMakeFiles/srslte_common.dir/build.make:254: recipe for target 'lib/src/common/CMakeFiles/srslte_common.dir/log_filter.cc.o' failed
make[2]: *** [lib/src/common/CMakeFiles/srslte_common.dir/log_filter.cc.o] Error 1
CMakeFiles/Makefile2:1232: recipe for target 'lib/src/common/CMakeFiles/srslte_common.dir/all' failed
make[1]: *** [lib/src/common/CMakeFiles/srslte_common.dir/all] Error 2
Makefile:162: recipe for target 'all' failed
make: *** [all] Error 2

its not going beyong 34% can anyone pls help out.

[harshilishere]

I have my local PC with 16gb ram. So certainly i have enough space but...

sudo python3 setup.py install --no DLIB_USE_CUDA
running install
running bdist_egg
running build
Detected Python architecture: 64bit
Detected platform: linux
Removing build directory /home/harshil/Desktop/dlib-19.6/./tools/python/build
Configuring cmake ...
-- The C compiler identification is GNU 7.5.0
-- The CXX compiler identification is GNU 7.5.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning at /usr/share/cmake-3.10/Modules/FindBoost.cmake:1626 (message):
No header defined for python-py34; skipping header check
Call Stack (most recent call first):
/home/harshil/Desktop/dlib-19.6/dlib/cmake_utils/add_python_module:61 (FIND_PACKAGE)
CMakeLists.txt:9 (include)
-- Could NOT find Boost
CMake Warning at /usr/share/cmake-3.10/Modules/FindBoost.cmake:1626 (message):
No header defined for python-py35; skipping header check
Call Stack (most recent call first):
/home/harshil/Desktop/dlib-19.6/dlib/cmake_utils/add_python_module:63 (FIND_PACKAGE)
CMakeLists.txt:9 (include)
-- Could NOT find Boost
CMake Warning at /usr/share/cmake-3.10/Modules/FindBoost.cmake:1626 (message):
No header defined for python3; skipping header check
Call Stack (most recent call first):
/home/harshil/Desktop/dlib-19.6/dlib/cmake_utils/add_python_module:66 (FIND_PACKAGE)
CMakeLists.txt:9 (include)
-- Boost version: 1.65.1
-- Found the following Boost libraries:
-- python3
-- Found PythonLibs: /usr/lib/x86_64-linux-gnu/libpython3.6m.so (Required is at least version "3.4")
-- USING BOOST_LIBS: /usr/lib/x86_64-linux-gnu/libboost_python3.so
-- C++11 activated.
-- Enabling SSE4 instructions
CMake Deprecation Warning at /home/harshil/Desktop/dlib-19.6/dlib/CMakeLists.txt:31 (cmake_policy):
The OLD behavior for policy CMP0023 will be removed from a future version
of CMake.
The cmake-policies(7) manual explains that the OLD behaviors of all
policies are deprecated and that a policy should be set to OLD only under
specific short-term circumstances. Projects should be ported to the NEW
behavior and not rely on setting a policy to OLD.
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found X11: /usr/lib/x86_64-linux-gnu/libX11.so
-- Looking for png_create_read_struct
-- Looking for png_create_read_struct - found
-- Looking for jpeg_read_header
-- Looking for jpeg_read_header - found
-- Searching for BLAS and LAPACK
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
-- Checking for module 'cblas'
-- No package 'cblas' found
-- Checking for module 'lapack'
-- Found lapack, version 3.10.3
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of void*
-- Check size of void* - done
-- Found LAPACK library
-- Found ATLAS BLAS library
-- Looking for cblas_ddot
-- Looking for cblas_ddot - found
-- Configuring done
-- Generating done
-- Build files have been written to: /home/harshil/Desktop/dlib-19.6/tools/python/build
Build using cmake ...
Scanning dependencies of target dlib
[ 1%] Building CXX object dlib_build/CMakeFiles/dlib.dir/base64/base64_kernel_1.cpp.o
[ 2%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bigint/bigint_kernel_1.cpp.o
[ 4%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bigint/bigint_kernel_2.cpp.o
[ 5%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bit_stream/bit_stream_kernel_1.cpp.o
[ 6%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_decoder/entropy_decoder_kernel_1.cpp.o
[ 8%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_decoder/entropy_decoder_kernel_2.cpp.o
[ 9%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_encoder/entropy_encoder_kernel_1.cpp.o
[ 10%] Building CXX object dlib_build/CMakeFiles/dlib.dir/entropy_encoder/entropy_encoder_kernel_2.cpp.o
[ 12%] Building CXX object dlib_build/CMakeFiles/dlib.dir/md5/md5_kernel_1.cpp.o
[ 13%] Building CXX object dlib_build/CMakeFiles/dlib.dir/tokenizer/tokenizer_kernel_1.cpp.o
[ 14%] Building CXX object dlib_build/CMakeFiles/dlib.dir/unicode/unicode.cpp.o
[ 16%] Building CXX object dlib_build/CMakeFiles/dlib.dir/data_io/image_dataset_metadata.cpp.o
[ 17%] Building CXX object dlib_build/CMakeFiles/dlib.dir/data_io/mnist.cpp.o
[ 18%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dnn/cpu_dlib.cpp.o
[ 20%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dnn/tensor_tools.cpp.o
[ 21%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockets/sockets_kernel_1.cpp.o
[ 22%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bsp/bsp.cpp.o
[ 24%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dir_nav/dir_nav_kernel_1.cpp.o
[ 25%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dir_nav/dir_nav_kernel_2.cpp.o
[ 26%] Building CXX object dlib_build/CMakeFiles/dlib.dir/dir_nav/dir_nav_extensions.cpp.o
[ 28%] Building CXX object dlib_build/CMakeFiles/dlib.dir/linker/linker_kernel_1.cpp.o
[ 29%] Building CXX object dlib_build/CMakeFiles/dlib.dir/logger/extra_logger_headers.cpp.o
[ 30%] Building CXX object dlib_build/CMakeFiles/dlib.dir/logger/logger_kernel_1.cpp.o
[ 32%] Building CXX object dlib_build/CMakeFiles/dlib.dir/logger/logger_config_file.cpp.o
[ 33%] Building CXX object dlib_build/CMakeFiles/dlib.dir/misc_api/misc_api_kernel_1.cpp.o
[ 34%] Building CXX object dlib_build/CMakeFiles/dlib.dir/misc_api/misc_api_kernel_2.cpp.o
[ 36%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockets/sockets_extensions.cpp.o
[ 37%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockets/sockets_kernel_2.cpp.o
[ 38%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockstreambuf/sockstreambuf.cpp.o
[ 40%] Building CXX object dlib_build/CMakeFiles/dlib.dir/sockstreambuf/sockstreambuf_unbuffered.cpp.o
[ 41%] Building CXX object dlib_build/CMakeFiles/dlib.dir/server/server_kernel.cpp.o
[ 42%] Building CXX object dlib_build/CMakeFiles/dlib.dir/server/server_iostream.cpp.o
[ 44%] Building CXX object dlib_build/CMakeFiles/dlib.dir/server/server_http.cpp.o
[ 45%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/multithreaded_object_extension.cpp.o
[ 46%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threaded_object_extension.cpp.o
[ 48%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threads_kernel_1.cpp.o
[ 49%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threads_kernel_2.cpp.o
[ 50%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/threads_kernel_shared.cpp.o
[ 52%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/thread_pool_extension.cpp.o
[ 53%] Building CXX object dlib_build/CMakeFiles/dlib.dir/threads/async.cpp.o
[ 54%] Building CXX object dlib_build/CMakeFiles/dlib.dir/timer/timer.cpp.o
[ 56%] Building CXX object dlib_build/CMakeFiles/dlib.dir/stack_trace.cpp.o
[ 57%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_widgets/fonts.cpp.o
[ 58%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_widgets/widgets.cpp.o
[ 60%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_widgets/drawable.cpp.o
[ 61%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_widgets/canvas_drawing.cpp.o
[ 62%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_widgets/style.cpp.o
[ 64%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_widgets/base_widgets.cpp.o
[ 65%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_core/gui_core_kernel_1.cpp.o
[ 66%] Building CXX object dlib_build/CMakeFiles/dlib.dir/gui_core/gui_core_kernel_2.cpp.o
[ 68%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_loader/png_loader.cpp.o
[ 69%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_saver/save_png.cpp.o
[ 70%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_loader/jpeg_loader.cpp.o
[ 72%] Building CXX object dlib_build/CMakeFiles/dlib.dir/image_saver/save_jpeg.cpp.o
[ 73%] Linking CXX static library libdlib.a
[ 73%] Built target dlib
Scanning dependencies of target dlib_
[ 74%] Building CXX object CMakeFiles/dlib_.dir/src/dlib.cpp.o
In file included from /usr/include/boost/python/detail/prefix.hpp:13:0,
from /usr/include/boost/python/args.hpp:8,
from /usr/include/boost/python.hpp:11,
from /home/harshil/Desktop/dlib-19.6/tools/python/src/dlib.cpp:4:
/usr/include/boost/python/detail/wrap_python.hpp:50:11: fatal error: pyconfig.h: No such file or directory

include <pyconfig.h>

       ^~~~~~~~~~~~

compilation terminated.
CMakeFiles/dlib_.dir/build.make:62: recipe for target 'CMakeFiles/dlib_.dir/src/dlib.cpp.o' failed
make[2]: *** [CMakeFiles/dlib_.dir/src/dlib.cpp.o] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/dlib_.dir/all' failed
make[1]: *** [CMakeFiles/dlib_.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2
error: cmake build failed!

can't go beyond this and can't understand the problem. Also tried to install it for CUDA but that also didn't worked.

[poojaravishankar]

This thread was very useful for me! I had the same "cheapoing" problem :)