I ran the "make tests" on my ERL, took days but it passes: make check-TESTS
PASS: tests/pngtest PASS: tests/pngvalid-gamma-16-to-8 PASS: tests/pngvalid-gamma-alpha-mode PASS: tests/pngvalid-gamma-background PASS: tests/pngvalid-gamma-expand16-alpha-mode PASS: tests/pngvalid-gamma-expand16-background PASS: tests/pngvalid-gamma-expand16-transform PASS: tests/pngvalid-gamma-sbit PASS: tests/pngvalid-gamma-threshold PASS: tests/pngvalid-gamma-transform PASS: tests/pngvalid-progressive-size PASS: tests/pngvalid-progressive-interlace-standard PASS: tests/pngvalid-transform PASS: tests/pngvalid-progressive-standard PASS: tests/pngvalid-standard PASS: tests/pngstest-1.8 PASS: tests/pngstest-1.8-alpha PASS: tests/pngstest-linear PASS: tests/pngstest-linear-alpha PASS: tests/pngstest-none PASS: tests/pngstest-none-alpha PASS: tests/pngstest-sRGB PASS: tests/pngstest-sRGB-alpha PASS: tests/pngunknown-IDAT PASS: tests/pngunknown-discard PASS: tests/pngunknown-if-safe PASS: tests/pngunknown-sAPI PASS: tests/pngunknown-sTER PASS: tests/pngunknown-save PASS: tests/pngunknown-vpAg PASS: tests/pngimage-quick PASS: tests/pngimage-full ============================================================================ Testsuite summary for libpng 1.6.25 ============================================================================ # TOTAL: 32 # PASS: 32 # SKIP: 0 # XFAIL: 0 # FAIL: 0 # XPASS: 0 # ERROR: 0
