CMake failing due to "GFLAGS not found" error while Gflags is detected by cmake...help please

[cmu-perceptual-computing-lab]

CMake failing due to "GFLAGS not found" error while Gflags is detected by cmake...help please

[Tetsujinfr]

Ok, so doing some more research, I found the Gflag main install page:
https://gflags.github.io/gflags/

In there they mention that to force the detection of a gflag lib install you can specify the location of the library in the CMakeLists.txt file:
To use an external gflags installation, add the following CMake code to your CMakeLists.txt file.
Find gflags installation. The gflags_DIR variable must be set to the /lib/cmake/gflags directory containing the gflags-config.cmake file if is a non-standard location. Otherwise, CMake should find the gflags installation automatically.

So, assuming that CMake could not automatically identify the GFlags lib stuff, I did search for it on my /usr/lib/, and found those libs under /usr/lib/x86_64-linux-gnu/.
So in the MonocularTotalCapture project, I edited the CMakeLists.txt file under the FitAdam folder, and I ended up commenting out the auto detect instruction and adding the below set instruction to indicate where those GFlags libs where on my system:
#find_package(GFlags REQUIRED)
set(GFLAGS_INCLUDE_DIR /usr/lib/x86_64-linux-gnu)

Not sure why I had to bother doing all that instead of just relying on the autodetect but it did fix my problem and CMake did complete properly!
Hourray!

Now I have to re-compile CERES cause I did not pay attention to install the specific 1.13 version as per the instructions, and indeed I feel the pain now.
Oh boy!