$ make
cc -Wall -Wextra \
-o pdfpres *.c \
`./version.sh` \
`pkg-config --cflags --libs gtk+-3.0 poppler-glib cairo` \
`xml2-config --cflags --libs` \
pdfpres.c: In function ‘initGUI’:
pdfpres.c:1477:2: warning: ‘gtk_vbox_new’ is deprecated (declared at /usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:60): Use 'gtk_box_new' instead [-Wdeprecated-declarations]
pdfpres.c:1494:2: warning: ‘gtk_vbox_new’ is deprecated (declared at /usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:60): Use 'gtk_box_new' instead [-Wdeprecated-declarations]
pdfpres.c:1688:2: warning: ‘gtk_vbox_new’ is deprecated (declared at /usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:60): Use 'gtk_box_new' instead [-Wdeprecated-declarations]
Have to investigate further: