g++ -O3 -std=c++14   -c -o image.o image.cpp
cc    -c -o iio.o iio.c
cc    -c -o downscale_image.o downscale_image.c
g++ -O3 -std=c++14  -fopenmp -ltiff -ljpeg -lpng -lfftw3f -O3  stochastic_deconvolution.cpp image.o iio.o downscale_image.o   -o stochastic_deconvolution
/usr/bin/ld: iio.o: in function `read_beheaded_png':
iio.c:(.text+0x3737): undefined reference to `png_create_read_struct'
/usr/bin/ld: iio.c:(.text+0x3761): undefined reference to `png_create_info_struct'
/usr/bin/ld: iio.c:(.text+0x379a): undefined reference to `png_set_longjmp_fn'
/usr/bin/ld: iio.c:(.text+0x37d1): undefined reference to `png_init_io'
/usr/bin/ld: iio.c:(.text+0x37e5): undefined reference to `png_set_sig_bytes'
/usr/bin/ld: iio.c:(.text+0x3804): undefined reference to `png_read_png'
/usr/bin/ld: iio.c:(.text+0x3817): undefined reference to `png_get_image_width'
/usr/bin/ld: iio.c:(.text+0x382d): undefined reference to `png_get_image_height'
/usr/bin/ld: iio.c:(.text+0x3843): undefined reference to `png_get_channels'
/usr/bin/ld: iio.c:(.text+0x385c): undefined reference to `png_get_bit_depth'
/usr/bin/ld: iio.c:(.text+0x38d9): undefined reference to `png_get_rows'
/usr/bin/ld: iio.c:(.text+0x3b64): undefined reference to `png_destroy_read_struct'
/usr/bin/ld: iio.o: in function `read_whole_jpeg':
iio.c:(.text+0x3c1e): undefined reference to `jpeg_std_error'
/usr/bin/ld: iio.c:(.text+0x3c4c): undefined reference to `jpeg_CreateDecompress'
/usr/bin/ld: iio.c:(.text+0x3c65): undefined reference to `jpeg_stdio_src'
/usr/bin/ld: iio.c:(.text+0x3c79): undefined reference to `jpeg_read_header'
/usr/bin/ld: iio.c:(.text+0x3d20): undefined reference to `jpeg_start_decompress'
/usr/bin/ld: iio.c:(.text+0x3e44): undefined reference to `jpeg_read_scanlines'
/usr/bin/ld: iio.c:(.text+0x3e94): undefined reference to `jpeg_finish_decompress'
/usr/bin/ld: iio.c:(.text+0x3ea3): undefined reference to `jpeg_destroy_decompress'
/usr/bin/ld: iio.o: in function `tiffopen_fancy':
iio.c:(.text+0x3fef): undefined reference to `TIFFOpen'
/usr/bin/ld: iio.c:(.text+0x4144): undefined reference to `TIFFOpen'
/usr/bin/ld: iio.c:(.text+0x416a): undefined reference to `TIFFReadDirectory'
/usr/bin/ld: iio.o: in function `read_whole_tiff':
iio.c:(.text+0x41d7): undefined reference to `TIFFSetWarningHandler'
/usr/bin/ld: iio.c:(.text+0x4241): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.c:(.text+0x4281): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.c:(.text+0x42d8): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.c:(.text+0x432d): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.c:(.text+0x4382): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.o:iio.c:(.text+0x43e1): more undefined references to `TIFFGetField' follow
/usr/bin/ld: iio.o: in function `read_whole_tiff':
iio.c:(.text+0x48c1): undefined reference to `TIFFScanlineSize'
/usr/bin/ld: iio.c:(.text+0x4a14): undefined reference to `TIFFReadRGBAImage'
/usr/bin/ld: iio.c:(.text+0x4b36): undefined reference to `TIFFIsTiled'
/usr/bin/ld: iio.c:(.text+0x4b4a): undefined reference to `TIFFTileSize'
/usr/bin/ld: iio.c:(.text+0x4b6a): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.c:(.text+0x4b87): undefined reference to `TIFFGetField'
/usr/bin/ld: iio.c:(.text+0x4ce3): undefined reference to `TIFFReadTile'
/usr/bin/ld: iio.c:(.text+0x4cf5): undefined reference to `TIFFTileSize'
/usr/bin/ld: iio.c:(.text+0x4d69): undefined reference to `TIFFReadTile'
/usr/bin/ld: iio.c:(.text+0x4f8f): undefined reference to `TIFFReadScanline'
/usr/bin/ld: iio.c:(.text+0x50a1): undefined reference to `TIFFReadScanline'
/usr/bin/ld: iio.c:(.text+0x516f): undefined reference to `TIFFClose'
/usr/bin/ld: iio.o: in function `iio_write_image_as_png':
iio.c:(.text+0xa5ab): undefined reference to `png_create_write_struct'
/usr/bin/ld: iio.c:(.text+0xa5d5): undefined reference to `png_create_info_struct'
/usr/bin/ld: iio.c:(.text+0xa60e): undefined reference to `png_set_longjmp_fn'
/usr/bin/ld: iio.c:(.text+0xa79b): undefined reference to `png_init_io'
/usr/bin/ld: iio.c:(.text+0xa841): undefined reference to `png_set_IHDR'
/usr/bin/ld: iio.c:(.text+0xa85c): undefined reference to `png_set_rows'
/usr/bin/ld: iio.c:(.text+0xa888): undefined reference to `png_write_png'
/usr/bin/ld: iio.c:(.text+0xa8a7): undefined reference to `png_destroy_write_struct'
/usr/bin/ld: iio.o: in function `iio_write_image_as_tiff':
iio.c:(.text+0xa91c): undefined reference to `TIFFOpen'
/usr/bin/ld: iio.c:(.text+0xa985): undefined reference to `TIFFSetField'
/usr/bin/ld: iio.c:(.text+0xa9a2): undefined reference to `TIFFSetField'
/usr/bin/ld: iio.c:(.text+0xa9bd): undefined reference to `TIFFSetField'
/usr/bin/ld: iio.c:(.text+0xa9da): undefined reference to `TIFFSetField'
/usr/bin/ld: iio.c:(.text+0xa9fa): undefined reference to `TIFFSetField'
/usr/bin/ld: iio.o:iio.c:(.text+0xaa51): more undefined references to `TIFFSetField' follow
/usr/bin/ld: iio.o: in function `iio_write_image_as_tiff':
iio.c:(.text+0xabda): undefined reference to `TIFFDefaultStripSize'
/usr/bin/ld: iio.c:(.text+0xabf6): undefined reference to `TIFFSetField'
/usr/bin/ld: iio.c:(.text+0xac2f): undefined reference to `TIFFWriteScanline'
/usr/bin/ld: iio.c:(.text+0xac6a): undefined reference to `TIFFClose'
/usr/bin/ld: downscale_image.o: in function `fft_2dfloat':
downscale_image.c:(.text+0x966): undefined reference to `fftwf_malloc'
/usr/bin/ld: downscale_image.c:(.text+0x98b): undefined reference to `fftwf_plan_dft_2d'
/usr/bin/ld: downscale_image.c:(.text+0x9f0): undefined reference to `fftwf_execute'
/usr/bin/ld: downscale_image.c:(.text+0x9fc): undefined reference to `fftwf_destroy_plan'
/usr/bin/ld: downscale_image.c:(.text+0xa08): undefined reference to `fftwf_free'
/usr/bin/ld: downscale_image.c:(.text+0xa0d): undefined reference to `fftwf_cleanup'
/usr/bin/ld: downscale_image.o: in function `ifft_2dfloat':
downscale_image.c:(.text+0xa3f): undefined reference to `fftwf_malloc'
/usr/bin/ld: downscale_image.c:(.text+0xa58): undefined reference to `fftwf_malloc'
/usr/bin/ld: downscale_image.c:(.text+0xa7d): undefined reference to `fftwf_plan_dft_2d'
/usr/bin/ld: downscale_image.c:(.text+0xae0): undefined reference to `fftwf_execute'
/usr/bin/ld: downscale_image.c:(.text+0xb79): undefined reference to `fftwf_destroy_plan'
/usr/bin/ld: downscale_image.c:(.text+0xb85): undefined reference to `fftwf_free'
/usr/bin/ld: downscale_image.c:(.text+0xb91): undefined reference to `fftwf_free'
/usr/bin/ld: downscale_image.c:(.text+0xb96): undefined reference to `fftwf_cleanup'
/usr/bin/ld: downscale_image.o: in function `gblur_gray':
downscale_image.c:(.text+0xeee): undefined reference to `fftwf_malloc'
/usr/bin/ld: downscale_image.c:(.text+0xf51): undefined reference to `fftwf_malloc'
/usr/bin/ld: downscale_image.c:(.text+0xfaa): undefined reference to `fftwf_free'
/usr/bin/ld: downscale_image.c:(.text+0xfb6): undefined reference to `fftwf_free'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: stochastic_deconvolution] Error 1