In GDCM, I needed a PDF library in order to cope with Encapsulated PDF Storage (1.2.840.10008.5.1.4.18.104.22.168)
I thought poppler would fit the need, but anytime a new release would come out, the API would be badly broken. Eg:
Today I found out, there is a new effort:
I'll have to keep an eye on it, and drop poppler which is only a rendering library (it pulls dependencies to fonts library !).