Apologies for the wall of text.

liam@...3128...:/home/inkrepo$ cd experimental

liam@...3129......:/home/inkrepo/experimental$ ls

liam@...3128...:/home/inkrepo/experimental$ cmake .

-- Creating build files in: /home/inkrepo/experimental

-- Found GSL: /usr/lib/libgsl.so

-- Found BoehmGC: /usr/lib/x86_64-linux-gnu/libgc.so

-- Found poppler: /usr/lib/x86_64-linux-gnu/libpoppler.so

-- Found poppler-glib: /usr/lib/x86_64-linux-gnu/libpoppler-glib.so

-- Found cairo-svg: /usr/lib/x86_64-linux-gnu/libcairo.so

-- Found poppler-cairo: /usr/lib/x86_64-linux-gnu/libcairo.so

-- checking for module 'libwpg-0.1'

-- package 'libwpg-0.1' not found

-- checking for module 'libwpg-stream-0.1'

-- package 'libwpg-stream-0.1' not found

-- checking for module 'libwpd-0.8'

-- package 'libwpd-0.8' not found

-- Found libwpg-0.2: /usr/lib/libwpg-0.2.so

-- Found libwpd-0.9: /usr/lib/libwpd-0.9.so

-- Found libwpd-stream-0.9: /usr/lib/libwpd-stream-0.9.so

-- Found Popt: /usr/lib/x86_64-linux-gnu/libpopt.so

-- Boost version: 1.54.0

-- checking for module 'gtkspell-2.0'

-- package 'gtkspell-2.0' not found

-- Try OpenMP C flag = [ ]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [-fopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [/openmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [-Qopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [-openmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [-xopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [+Oopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [-qsmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP C flag = [-mp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [ ]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [-fopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [/openmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [-Qopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [-openmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [-xopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [+Oopenmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [-qsmp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Try OpenMP CXX flag = [-mp]

-- Performing Test OpenMP_FLAG_DETECTED

-- Performing Test OpenMP_FLAG_DETECTED - Failed

-- Could NOT find OpenMP (missing: OpenMP_C_FLAGS OpenMP_CXX_FLAGS)

-- Generating header and sourcefiles from sp-marshal.list (Glib-Marshal)

-- sp-marshal.h unchanged

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.

Please set them or make sure they are set and tested correctly in the CMake files:

ImageMagick_MagickCore_INCLUDE_DIR

used as include directory in directory /home/inkrepo/experimental

used as include directory in directory /home/inkrepo/experimental

used as include directory in directory /home/inkrepo/experimental/src

used as include directory in directory /home/inkrepo/experimental/src

used as include directory in directory /home/inkrepo/experimental/src/2geom

used as include directory in directory /home/inkrepo/experimental/src/libavoid

used as include directory in directory /home/inkrepo/experimental/src/libcola

used as include directory in directory /home/inkrepo/experimental/src/libcroco

used as include directory in directory /home/inkrepo/experimental/src/libgdl

used as include directory in directory /home/inkrepo/experimental/src/libuemf

used as include directory in directory /home/inkrepo/experimental/src/libvpsc

used as include directory in directory /home/inkrepo/experimental/src/livarot

used as include directory in directory /home/inkrepo/experimental/src/libnrtype

used as include directory in directory /home/inkrepo/experimental/src/libdepixelize

-- Configuring incomplete, errors occurred!

See also "/home/inkrepo/experimental/CMakeFiles/CMakeOutput.log".

See also "/home/inkrepo/experimental/CMakeFiles/CMakeError.log".

Just to prove CMake wrong about OpenMP and ImageMagick, I then did this:

liam@...3128...:/home/inkrepo/experimental$ cd ..

liam@...3128...:/home/inkrepo$ cat > openmp-test.cpp

#include <omp.h>

#include <stdio.h>

int main() {

#pragma omp parallel

printf("Hello from thread %d, nthreads %d\n", omp_get_thread_num(),

omp_get_num_threads());

}^D

liam@...3128...:/home/inkrepo$ g++ -fopenmp openmp-test.cpp -o a.out

liam@...3128...:/home/inkrepo$ ./a.out

Hello from thread 3, nthreads 4

Hello from thread 0, nthreads 4

Hello from thread 2, nthreads 4

Hello from thread 1, nthreads 4

liam@...360...3128...:/home/inkrepo$ ls /usr/include/GraphicsMagick

magick Magick++ Magick++.h wand

liam@...3128...:/home/inkrepo$ ls /usr/include/magick

analyze.h blob.h color_lookup.h common.h confirm_access.h deprecate.h enhance.h gem.h list.h magick.h monitor.h pixel_cache.h quantize.h resize.h statistics.h transform.h

api.h cdl.h colormap.h compare.h constitute.h describe.h error.h gradient.h log.h magick_types.h montage.h pixel_iterator.h random.h resource.h symbols.h type.h

attribute.h channel.h colorspace.h composite.h decorate.h draw.h forward.h hclut.h magic.h memory.h operator.h plasma.h registry.h shear.h texture.h utility.h

average.h color.h command.h compress.h delegate.h effect.h fx.h image.h magick_config.h module.h paint.h profile.h render.h signature.h timer.h version.h

What I'm not getting here is why CMake requires libmagickcore-dev to be installed — on the same system, with the same installed packages, ./configure with no parameters passed says this:

Use gnome-vfs: yes

Use openoffice files: yes

Use relocation support: no

Enable LittleCms: yes

Enable DBUS: no

Enable Poppler-Cairo: yes

ImageMagick Magick++: yes

Libwpg: yes

Libvisio: yes

Libcdr: no

Doing Local Install: no

After installing libmagickcore-dev, I ran CMake again and it "worked". I then ran make -k (and got the expected errors with poppler), but then this error about missing Magick.h.

[ 20%] Building CXX object src/CMakeFiles/inkscape.dir/extension/internal/bitmap/blur.cpp.o

/home/inkrepo/experimental/src/extension/internal/bitmap/blur.cpp:13:10: fatal error: 'Magick++.h' file not found

#include <Magick++.h>

^

1 error generated.

TL;DR how do we get CMake to properly recognize OpenMP support, recognize the correct Magick, and supply the correct headers?