Looks like a patch for libpng-1.4 is needed here. See bug 305097. Making all in file-ico make[3]: Entering directory `/var/tmp/portage/media-gfx/gimp-2.7.0/work/gimp-2.7.0/plug-ins/file-ico' CC file_ico-ico.o CC file_ico-ico-dialog.o CC file_ico-ico-load.o CC file_ico-ico-save.o ico-load.c: In function 'ico_read_png': ico-load.c:289: warning: implicit declaration of function 'png_set_gray_1_2_4_to_8' CCLD file-ico file_ico-ico-load.o: In function `ico_read_png': ico-load.c:(.text+0x359): undefined reference to `png_set_gray_1_2_4_to_8' ico-load.c:(.text+0x3ed): undefined reference to `png_set_gray_1_2_4_to_8' collect2: ld returned 1 exit status make[3]: *** [file-ico] Error 1 make[3]: Leaving directory `/var/tmp/portage/media-gfx/gimp-2.7.0/work/gimp-2.7.0/plug-ins/file-ico' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/var/tmp/portage/media-gfx/gimp-2.7.0/work/gimp-2.7.0/plug-ins' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/var/tmp/portage/media-gfx/gimp-2.7.0/work/gimp-2.7.0' make: *** [all] Error 2 Reproducible: Always
err... 2.7.0 is not in portage.