[Qt-interest] problems the libpng and QT

[Sarvesh Saran]

Hi,

I have a QT application which gives the following error during linking.

remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(png.o): In function `png_calculate_crc':
png.c:(.text+0xa69): undefined reference to `crc32'
/remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(png.o): In function `png_reset_crc':
png.c:(.text+0xa9b): undefined reference to `crc32'
/remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(png.o): In function `png_reset_zstream':
png.c:(.text+0x8d): undefined reference to `inflateReset'
/remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(pngread.o): In function `png_read_destroy':
pngread.c:(.text+0x226): undefined reference to `inflateEnd'
/remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(pngread.o): In function `png_read_row':
pngread.c:(.text+0x910): undefined reference to `inflate'
/remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(pngread.o): In function `png_read_init_3':
pngread.c:(.text+0x1845): undefined reference to `inflateInit_'
/remote/srm213/clientstore/ekki_qt_qscc/4.4.3/20081117/lib-amd64/libQtGui-O.a(pngread.o): In function `png_create_read_struct_2':
pngread.c:(.text+0x1c67): undefined reference to `inflateInit_'

however sometimes I don't get this error..its rather sporadic.

Will adding -lpng to the build do the trick?  why is this problem not consistent? ( I'm not using qmake....)


Thanks,
Sarvesh

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