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hardsubx lacks a link directive to the tesseract library #838

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opened 2026-01-29 16:54:45 +00:00 by claunia · 1 comment
claunia commented 2026-01-29 16:54:45 +00:00
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Originally created by @apteryks on GitHub (Jul 22, 2025).

Hi,

Using the current latest commit 81fdecd5af, the build fails with the configure flags --enable-ffmpeg, --enable-ocr and --enable-hardsubx:

gcc -std=gnu99 -Wno-write-strings -Wno-pointer-sign -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DFT2_BUILD_LIBRARY -DGPAC_DISABLE_VTT -DGPAC_DISABLE_OD_DUMP -DGPAC_DISABLE_REMOTERY -DNO_GZIP -O3 -s  -DGPAC_64_BITS -DENABLE_HARDSUBX -DENABLE_OCR -DPN3G_NO_CONFIG_H -DDISABLE_RUST -g -O2   -o ccextractor ../src/ccextractor-ccextractor.o ../src/thirdparty/libpng/ccextractor-png.o ../src/thirdparty/libpng/ccextractor-pngerror.o ../src/thirdparty/libpng/ccextractor-pngget.o ../src/thirdparty/libpng/ccextractor-pngmem.o ../src/thirdparty/libpng/ccextractor-pngpread.o ../src/thirdparty/libpng/ccextractor-pngread.o ../src/thirdparty/libpng/ccextractor-pngrio.o ../src/thirdparty/libpng/ccextractor-pngrtran.o ../src/thirdparty/libpng/ccextractor-pngrutil.o ../src/thirdparty/libpng/ccextractor-pngset.o ../src/thirdparty/libpng/ccextractor-pngtrans.o ../src/thirdparty/libpng/ccextractor-pngwio.o ../src/thirdparty/libpng/ccextractor-pngwrite.o ../src/thirdparty/libpng/ccextractor-pngwtran.o ../src/thirdparty/libpng/ccextractor-pngwutil.o ../src/lib_ccx/ccextractor-ccx_common_option.o ../src/lib_ccx/ccextractor-ccx_common_common.o ../src/lib_ccx/ccextractor-utility.o ../src/lib_ccx/ccextractor-activity.o ../src/lib_ccx/ccextractor-asf_functions.o ../src/lib_ccx/ccextractor-avc_functions.o ../src/lib_ccx/ccextractor-cc_bitstream.o ../src/lib_ccx/ccextractor-ccx_common_char_encoding.o ../src/lib_ccx/ccextractor-ccx_common_constants.o ../src/lib_ccx/ccextractor-ccx_common_timing.o ../src/lib_ccx/ccextractor-ccx_decoders_608.o ../src/lib_ccx/ccextractor-ccx_decoders_708.o ../src/lib_ccx/ccextractor-ccx_decoders_708_encoding.o ../src/lib_ccx/ccextractor-ccx_decoders_708_output.o ../src/lib_ccx/ccextractor-ccx_decoders_common.o ../src/lib_ccx/ccextractor-ccx_decoders_isdb.o ../src/lib_ccx/ccextractor-ccx_decoders_vbi.o ../src/lib_ccx/ccextractor-ccx_decoders_xds.o ../src/lib_ccx/ccextractor-ccx_demuxer.o ../src/lib_ccx/ccextractor-ccx_demuxer_mxf.o ../src/lib_ccx/ccextractor-ccx_dtvcc.o ../src/lib_ccx/ccextractor-ccx_encoders_common.o ../src/lib_ccx/ccextractor-ccx_encoders_curl.o ../src/lib_ccx/ccextractor-ccx_encoders_g608.o ../src/lib_ccx/ccextractor-ccx_encoders_helpers.o ../src/lib_ccx/ccextractor-ccx_encoders_mcc.o ../src/lib_ccx/ccextractor-ccx_encoders_sami.o ../src/lib_ccx/ccextractor-ccx_encoders_scc.o ../src/lib_ccx/ccextractor-ccx_encoders_smptett.o ../src/lib_ccx/ccextractor-ccx_encoders_splitbysentence.o ../src/lib_ccx/ccextractor-ccx_encoders_spupng.o ../src/lib_ccx/ccextractor-ccx_encoders_srt.o ../src/lib_ccx/ccextractor-ccx_encoders_ssa.o ../src/lib_ccx/ccextractor-ccx_encoders_transcript.o ../src/lib_ccx/ccextractor-ccx_encoders_webvtt.o ../src/lib_ccx/ccextractor-ccx_encoders_xds.o ../src/lib_ccx/ccextractor-ccx_gxf.o ../src/lib_ccx/ccextractor-ccx_share.o ../src/lib_ccx/ccextractor-ccx_sub_entry_message.pb-c.o ../src/lib_ccx/ccextractor-configuration.o ../src/lib_ccx/ccextractor-dvb_subtitle_decoder.o ../src/lib_ccx/ccextractor-dvd_subtitle_decoder.o ../src/lib_ccx/ccextractor-es_functions.o ../src/lib_ccx/ccextractor-es_userdata.o ../src/lib_ccx/ccextractor-ffmpeg_intgr.o ../src/lib_ccx/ccextractor-file_functions.o ../src/lib_ccx/ccextractor-general_loop.o ../src/lib_ccx/ccextractor-hardsubx.o ../src/lib_ccx/ccextractor-hardsubx_classifier.o ../src/lib_ccx/ccextractor-hardsubx_decoder.o ../src/lib_ccx/ccextractor-hardsubx_imgops.o ../src/lib_ccx/ccextractor-hardsubx_utility.o ../src/lib_ccx/ccextractor-lib_ccx.o ../src/lib_ccx/ccextractor-matroska.o ../src/lib_ccx/ccextractor-mp4.o ../src/lib_ccx/ccextractor-myth.o ../src/lib_ccx/ccextractor-networking.o ../src/lib_ccx/ccextractor-ocr.o ../src/lib_ccx/ccextractor-output.o ../src/lib_ccx/ccextractor-params.o ../src/lib_ccx/ccextractor-params_dump.o ../src/lib_ccx/ccextractor-sequencing.o ../src/lib_ccx/ccextractor-stream_functions.o ../src/lib_ccx/ccextractor-telxcc.o ../src/lib_ccx/ccextractor-ts_functions.o ../src/lib_ccx/ccextractor-ts_info.o ../src/lib_ccx/ccextractor-ts_tables.o ../src/lib_ccx/ccextractor-ts_tables_epg.o ../src/lib_ccx/ccextractor-wtv_functions.o ../src/thirdparty/zlib/ccextractor-adler32.o ../src/thirdparty/zlib/ccextractor-compress.o ../src/thirdparty/zlib/ccextractor-crc32.o ../src/thirdparty/zlib/ccextractor-deflate.o ../src/thirdparty/zlib/ccextractor-gzclose.o ../src/thirdparty/zlib/ccextractor-gzlib.o ../src/thirdparty/zlib/ccextractor-gzread.o ../src/thirdparty/zlib/ccextractor-gzwrite.o ../src/thirdparty/zlib/ccextractor-infback.o ../src/thirdparty/zlib/ccextractor-inffast.o ../src/thirdparty/zlib/ccextractor-inflate.o ../src/thirdparty/zlib/ccextractor-inftrees.o ../src/thirdparty/zlib/ccextractor-trees.o ../src/thirdparty/zlib/ccextractor-uncompr.o ../src/thirdparty/zlib/ccextractor-zutil.o ../src/thirdparty/utf8proc/ccextractor-utf8proc.o ../src/thirdparty/lib_hash/ccextractor-sha2.o ../src/thirdparty/protobuf-c/ccextractor-protobuf-c.o ../src/lib_ccx/zvbi/ccextractor-bit_slicer.o ../src/lib_ccx/zvbi/ccextractor-decoder.o ../src/lib_ccx/zvbi/ccextractor-raw_decoder.o ../src/lib_ccx/zvbi/ccextractor-sampling_par.o ../src/thirdparty/freetype/autofit/ccextractor-autofit.o ../src/thirdparty/freetype/base/ccextractor-ftbase.o ../src/thirdparty/freetype/base/ccextractor-ftbbox.o ../src/thirdparty/freetype/base/ccextractor-ftbdf.o ../src/thirdparty/freetype/base/ccextractor-ftbitmap.o ../src/thirdparty/freetype/base/ccextractor-ftcid.o ../src/thirdparty/freetype/base/ccextractor-ftfntfmt.o ../src/thirdparty/freetype/base/ccextractor-ftfstype.o ../src/thirdparty/freetype/base/ccextractor-ftgasp.o ../src/thirdparty/freetype/base/ccextractor-ftglyph.o ../src/thirdparty/freetype/base/ccextractor-ftgxval.o ../src/thirdparty/freetype/base/ccextractor-ftinit.o ../src/thirdparty/freetype/base/ccextractor-ftlcdfil.o ../src/thirdparty/freetype/base/ccextractor-ftmm.o ../src/thirdparty/freetype/base/ccextractor-ftotval.o ../src/thirdparty/freetype/base/ccextractor-ftpatent.o ../src/thirdparty/freetype/base/ccextractor-ftpfr.o ../src/thirdparty/freetype/base/ccextractor-ftstroke.o ../src/thirdparty/freetype/base/ccextractor-ftsynth.o ../src/thirdparty/freetype/base/ccextractor-ftsystem.o ../src/thirdparty/freetype/base/ccextractor-fttype1.o ../src/thirdparty/freetype/base/ccextractor-ftwinfnt.o ../src/thirdparty/freetype/bdf/ccextractor-bdf.o ../src/thirdparty/freetype/bzip2/ccextractor-ftbzip2.o ../src/thirdparty/freetype/cache/ccextractor-ftcache.o ../src/thirdparty/freetype/cff/ccextractor-cff.o ../src/thirdparty/freetype/cid/ccextractor-type1cid.o ../src/thirdparty/freetype/gzip/ccextractor-ftgzip.o ../src/thirdparty/freetype/lzw/ccextractor-ftlzw.o ../src/thirdparty/freetype/pcf/ccextractor-pcf.o ../src/thirdparty/freetype/pfr/ccextractor-pfr.o ../src/thirdparty/freetype/psaux/ccextractor-psaux.o ../src/thirdparty/freetype/pshinter/ccextractor-pshinter.o ../src/thirdparty/freetype/psnames/ccextractor-psnames.o ../src/thirdparty/freetype/raster/ccextractor-raster.o ../src/thirdparty/freetype/sfnt/ccextractor-sfnt.o ../src/thirdparty/freetype/smooth/ccextractor-smooth.o ../src/thirdparty/freetype/truetype/ccextractor-truetype.o ../src/thirdparty/freetype/type1/ccextractor-type1.o ../src/thirdparty/freetype/type42/ccextractor-type42.o ../src/thirdparty/freetype/winfonts/ccextractor-winfnt.o  -lm -lpthread -ldl -lgpac  -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lavcodec -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lavformat  -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lavutil -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lswscale  -L/gnu/store/qr5snmjnyg6zj039hbv4y8vvpw62b420-leptonica-1.84.1/lib -lleptonica  -lm 
ld: ../src/lib_ccx/ccextractor-hardsubx.o: in function `_init_hardsubx':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:232:(.text+0x5f2): undefined reference to `TessBaseAPICreate'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:261:(.text+0x67c): undefined reference to `TessVersion'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:267:(.text+0x6f5): undefined reference to `TessBaseAPIInit4'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:261:(.text+0x7f3): undefined reference to `TessVersion'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:274:(.text+0x832): undefined reference to `TessBaseAPIInit4'
ld: ../src/lib_ccx/ccextractor-hardsubx.o: in function `_dinit_hardsubx':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:321:(.text+0x8a4): undefined reference to `TessBaseAPIEnd'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:322:(.text+0x8b0): undefined reference to `TessBaseAPIDelete'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:321:(.text+0x944): undefined reference to `TessBaseAPIEnd'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:322:(.text+0x950): undefined reference to `TessBaseAPIDelete'
ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_simple':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:17:(.text+0xc): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:18:(.text+0x1a): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:24:(.text+0x2a): undefined reference to `TessBaseAPIGetUTF8Text'
ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_wordwise':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:35:(.text+0x89): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:36:(.text+0x97): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:42:(.text+0xb1): undefined reference to `TessBaseAPIGetIterator'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:110:(.text+0x120): undefined reference to `TessPageIteratorNext'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:52:(.text+0x135): undefined reference to `TessResultIteratorGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:56:(.text+0x155): undefined reference to `TessDeleteText'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:89:(.text+0x1a0): undefined reference to `TessResultIteratorWordFontAttributes'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:119:(.text+0x21a): undefined reference to `TessResultIteratorDelete'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:63:(.text+0x34e): undefined reference to `TessResultIteratorWordFontAttributes'
ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_letterwise':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:128:(.text+0x415): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:129:(.text+0x423): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:135:(.text+0x439): undefined reference to `TessBaseAPIGetIterator'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:143:(.text+0x459): undefined reference to `TessResultIteratorGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:147:(.text+0x479): undefined reference to `TessDeleteText'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:156:(.text+0x4c1): undefined reference to `TessPageIteratorNext'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:159:(.text+0x4cd): undefined reference to `TessResultIteratorDelete'
ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_simple_threshold':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:168:(.text+0x524): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:169:(.text+0x532): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:175:(.text+0x542): undefined reference to `TessBaseAPIGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:180:(.text+0x556): undefined reference to `TessBaseAPIMeanTextConf'
ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_wordwise_threshold':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:194:(.text+0x5cf): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:195:(.text+0x5dd): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:201:(.text+0x5f4): undefined reference to `TessBaseAPIGetIterator'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:213:(.text+0x629): undefined reference to `TessResultIteratorGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:217:(.text+0x651): undefined reference to `TessDeleteText'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:218:(.text+0x65e): undefined reference to `TessResultIteratorConfidence'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:276:(.text+0x6e6): undefined reference to `TessPageIteratorNext'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:289:(.text+0x73a): undefined reference to `TessResultIteratorDelete'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:255:(.text+0x77e): undefined reference to `TessResultIteratorWordFontAttributes'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:229:(.text+0x85e): undefined reference to `TessResultIteratorWordFontAttributes'
ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_letterwise_threshold':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:298:(.text+0x9df): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:299:(.text+0x9ed): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:305:(.text+0xa04): undefined reference to `TessBaseAPIGetIterator'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:316:(.text+0xa29): undefined reference to `TessResultIteratorGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:320:(.text+0xa49): undefined reference to `TessDeleteText'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:321:(.text+0xa56): undefined reference to `TessResultIteratorConfidence'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:334:(.text+0xabd): undefined reference to `TessPageIteratorNext'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:341:(.text+0xafa): undefined reference to `TessResultIteratorDelete'
ld: ../src/lib_ccx/ccextractor-ocr.o: in function `delete_ocr':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:82:(.text+0x121): undefined reference to `TessBaseAPIEnd'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:83:(.text+0x12a): undefined reference to `TessBaseAPIDelete'
ld: ../src/lib_ccx/ccextractor-ocr.o: in function `init_ocr':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:162:(.text+0x320): undefined reference to `TessBaseAPICreate'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:163:(.text+0x32b): undefined reference to `TessVersion'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:169:(.text+0x3a8): undefined reference to `TessBaseAPIInit4'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:181:(.text+0x3c1): undefined reference to `TessBaseAPISetPageSegMode'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:163:(.text+0x3fb): undefined reference to `TessVersion'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:176:(.text+0x443): undefined reference to `TessBaseAPIInit4'
ld: ../src/lib_ccx/ccextractor-ocr.o: in function `delete_ocr':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:82:(.text+0x4e7): undefined reference to `TessBaseAPIEnd'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:83:(.text+0x4ef): undefined reference to `TessBaseAPIDelete'
ld: ../src/lib_ccx/ccextractor-ocr.o: in function `ocr_bitmap':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:335:(.text+0x81a): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:336:(.text+0x824): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:352:(.text+0x839): undefined reference to `TessBaseAPIGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:358:(.text+0x85d): undefined reference to `TessDeleteText'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:369:(.text+0xb17): undefined reference to `TessBaseAPISetImage2'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:370:(.text+0xb21): undefined reference to `TessBaseAPIRecognize'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:685:(.text+0xb46): undefined reference to `TessResultIteratorDelete'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:377:(.text+0xb58): undefined reference to `TessBaseAPIGetIterator'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:583:(.text+0xb9b): undefined reference to `TessPageIteratorNext'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:384:(.text+0xbb5): undefined reference to `TessResultIteratorGetUTF8Text'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:387:(.text+0xbe0): undefined reference to `TessPageIteratorBoundingBox'
ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:582:(.text+0x1194): undefined reference to `TessDeleteText'
ld: ../src/lib_ccx/ccextractor-params.o: in function `version':
/tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/params.c:1080:(.text+0x29a2): undefined reference to `TessVersion'
collect2: error: ld returned 1 exit status

It seems a link directive to the tesseract shared library is missing.

Originally created by @apteryks on GitHub (Jul 22, 2025). Hi, Using the current latest commit 81fdecd5af683ff25b953339fdb0d84e141d60c1, the build fails with the configure flags `--enable-ffmpeg`, `--enable-ocr` and `--enable-hardsubx`: ``` gcc -std=gnu99 -Wno-write-strings -Wno-pointer-sign -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DFT2_BUILD_LIBRARY -DGPAC_DISABLE_VTT -DGPAC_DISABLE_OD_DUMP -DGPAC_DISABLE_REMOTERY -DNO_GZIP -O3 -s -DGPAC_64_BITS -DENABLE_HARDSUBX -DENABLE_OCR -DPN3G_NO_CONFIG_H -DDISABLE_RUST -g -O2 -o ccextractor ../src/ccextractor-ccextractor.o ../src/thirdparty/libpng/ccextractor-png.o ../src/thirdparty/libpng/ccextractor-pngerror.o ../src/thirdparty/libpng/ccextractor-pngget.o ../src/thirdparty/libpng/ccextractor-pngmem.o ../src/thirdparty/libpng/ccextractor-pngpread.o ../src/thirdparty/libpng/ccextractor-pngread.o ../src/thirdparty/libpng/ccextractor-pngrio.o ../src/thirdparty/libpng/ccextractor-pngrtran.o ../src/thirdparty/libpng/ccextractor-pngrutil.o ../src/thirdparty/libpng/ccextractor-pngset.o ../src/thirdparty/libpng/ccextractor-pngtrans.o ../src/thirdparty/libpng/ccextractor-pngwio.o ../src/thirdparty/libpng/ccextractor-pngwrite.o ../src/thirdparty/libpng/ccextractor-pngwtran.o ../src/thirdparty/libpng/ccextractor-pngwutil.o ../src/lib_ccx/ccextractor-ccx_common_option.o ../src/lib_ccx/ccextractor-ccx_common_common.o ../src/lib_ccx/ccextractor-utility.o ../src/lib_ccx/ccextractor-activity.o ../src/lib_ccx/ccextractor-asf_functions.o ../src/lib_ccx/ccextractor-avc_functions.o ../src/lib_ccx/ccextractor-cc_bitstream.o ../src/lib_ccx/ccextractor-ccx_common_char_encoding.o ../src/lib_ccx/ccextractor-ccx_common_constants.o ../src/lib_ccx/ccextractor-ccx_common_timing.o ../src/lib_ccx/ccextractor-ccx_decoders_608.o ../src/lib_ccx/ccextractor-ccx_decoders_708.o ../src/lib_ccx/ccextractor-ccx_decoders_708_encoding.o ../src/lib_ccx/ccextractor-ccx_decoders_708_output.o ../src/lib_ccx/ccextractor-ccx_decoders_common.o ../src/lib_ccx/ccextractor-ccx_decoders_isdb.o ../src/lib_ccx/ccextractor-ccx_decoders_vbi.o ../src/lib_ccx/ccextractor-ccx_decoders_xds.o ../src/lib_ccx/ccextractor-ccx_demuxer.o ../src/lib_ccx/ccextractor-ccx_demuxer_mxf.o ../src/lib_ccx/ccextractor-ccx_dtvcc.o ../src/lib_ccx/ccextractor-ccx_encoders_common.o ../src/lib_ccx/ccextractor-ccx_encoders_curl.o ../src/lib_ccx/ccextractor-ccx_encoders_g608.o ../src/lib_ccx/ccextractor-ccx_encoders_helpers.o ../src/lib_ccx/ccextractor-ccx_encoders_mcc.o ../src/lib_ccx/ccextractor-ccx_encoders_sami.o ../src/lib_ccx/ccextractor-ccx_encoders_scc.o ../src/lib_ccx/ccextractor-ccx_encoders_smptett.o ../src/lib_ccx/ccextractor-ccx_encoders_splitbysentence.o ../src/lib_ccx/ccextractor-ccx_encoders_spupng.o ../src/lib_ccx/ccextractor-ccx_encoders_srt.o ../src/lib_ccx/ccextractor-ccx_encoders_ssa.o ../src/lib_ccx/ccextractor-ccx_encoders_transcript.o ../src/lib_ccx/ccextractor-ccx_encoders_webvtt.o ../src/lib_ccx/ccextractor-ccx_encoders_xds.o ../src/lib_ccx/ccextractor-ccx_gxf.o ../src/lib_ccx/ccextractor-ccx_share.o ../src/lib_ccx/ccextractor-ccx_sub_entry_message.pb-c.o ../src/lib_ccx/ccextractor-configuration.o ../src/lib_ccx/ccextractor-dvb_subtitle_decoder.o ../src/lib_ccx/ccextractor-dvd_subtitle_decoder.o ../src/lib_ccx/ccextractor-es_functions.o ../src/lib_ccx/ccextractor-es_userdata.o ../src/lib_ccx/ccextractor-ffmpeg_intgr.o ../src/lib_ccx/ccextractor-file_functions.o ../src/lib_ccx/ccextractor-general_loop.o ../src/lib_ccx/ccextractor-hardsubx.o ../src/lib_ccx/ccextractor-hardsubx_classifier.o ../src/lib_ccx/ccextractor-hardsubx_decoder.o ../src/lib_ccx/ccextractor-hardsubx_imgops.o ../src/lib_ccx/ccextractor-hardsubx_utility.o ../src/lib_ccx/ccextractor-lib_ccx.o ../src/lib_ccx/ccextractor-matroska.o ../src/lib_ccx/ccextractor-mp4.o ../src/lib_ccx/ccextractor-myth.o ../src/lib_ccx/ccextractor-networking.o ../src/lib_ccx/ccextractor-ocr.o ../src/lib_ccx/ccextractor-output.o ../src/lib_ccx/ccextractor-params.o ../src/lib_ccx/ccextractor-params_dump.o ../src/lib_ccx/ccextractor-sequencing.o ../src/lib_ccx/ccextractor-stream_functions.o ../src/lib_ccx/ccextractor-telxcc.o ../src/lib_ccx/ccextractor-ts_functions.o ../src/lib_ccx/ccextractor-ts_info.o ../src/lib_ccx/ccextractor-ts_tables.o ../src/lib_ccx/ccextractor-ts_tables_epg.o ../src/lib_ccx/ccextractor-wtv_functions.o ../src/thirdparty/zlib/ccextractor-adler32.o ../src/thirdparty/zlib/ccextractor-compress.o ../src/thirdparty/zlib/ccextractor-crc32.o ../src/thirdparty/zlib/ccextractor-deflate.o ../src/thirdparty/zlib/ccextractor-gzclose.o ../src/thirdparty/zlib/ccextractor-gzlib.o ../src/thirdparty/zlib/ccextractor-gzread.o ../src/thirdparty/zlib/ccextractor-gzwrite.o ../src/thirdparty/zlib/ccextractor-infback.o ../src/thirdparty/zlib/ccextractor-inffast.o ../src/thirdparty/zlib/ccextractor-inflate.o ../src/thirdparty/zlib/ccextractor-inftrees.o ../src/thirdparty/zlib/ccextractor-trees.o ../src/thirdparty/zlib/ccextractor-uncompr.o ../src/thirdparty/zlib/ccextractor-zutil.o ../src/thirdparty/utf8proc/ccextractor-utf8proc.o ../src/thirdparty/lib_hash/ccextractor-sha2.o ../src/thirdparty/protobuf-c/ccextractor-protobuf-c.o ../src/lib_ccx/zvbi/ccextractor-bit_slicer.o ../src/lib_ccx/zvbi/ccextractor-decoder.o ../src/lib_ccx/zvbi/ccextractor-raw_decoder.o ../src/lib_ccx/zvbi/ccextractor-sampling_par.o ../src/thirdparty/freetype/autofit/ccextractor-autofit.o ../src/thirdparty/freetype/base/ccextractor-ftbase.o ../src/thirdparty/freetype/base/ccextractor-ftbbox.o ../src/thirdparty/freetype/base/ccextractor-ftbdf.o ../src/thirdparty/freetype/base/ccextractor-ftbitmap.o ../src/thirdparty/freetype/base/ccextractor-ftcid.o ../src/thirdparty/freetype/base/ccextractor-ftfntfmt.o ../src/thirdparty/freetype/base/ccextractor-ftfstype.o ../src/thirdparty/freetype/base/ccextractor-ftgasp.o ../src/thirdparty/freetype/base/ccextractor-ftglyph.o ../src/thirdparty/freetype/base/ccextractor-ftgxval.o ../src/thirdparty/freetype/base/ccextractor-ftinit.o ../src/thirdparty/freetype/base/ccextractor-ftlcdfil.o ../src/thirdparty/freetype/base/ccextractor-ftmm.o ../src/thirdparty/freetype/base/ccextractor-ftotval.o ../src/thirdparty/freetype/base/ccextractor-ftpatent.o ../src/thirdparty/freetype/base/ccextractor-ftpfr.o ../src/thirdparty/freetype/base/ccextractor-ftstroke.o ../src/thirdparty/freetype/base/ccextractor-ftsynth.o ../src/thirdparty/freetype/base/ccextractor-ftsystem.o ../src/thirdparty/freetype/base/ccextractor-fttype1.o ../src/thirdparty/freetype/base/ccextractor-ftwinfnt.o ../src/thirdparty/freetype/bdf/ccextractor-bdf.o ../src/thirdparty/freetype/bzip2/ccextractor-ftbzip2.o ../src/thirdparty/freetype/cache/ccextractor-ftcache.o ../src/thirdparty/freetype/cff/ccextractor-cff.o ../src/thirdparty/freetype/cid/ccextractor-type1cid.o ../src/thirdparty/freetype/gzip/ccextractor-ftgzip.o ../src/thirdparty/freetype/lzw/ccextractor-ftlzw.o ../src/thirdparty/freetype/pcf/ccextractor-pcf.o ../src/thirdparty/freetype/pfr/ccextractor-pfr.o ../src/thirdparty/freetype/psaux/ccextractor-psaux.o ../src/thirdparty/freetype/pshinter/ccextractor-pshinter.o ../src/thirdparty/freetype/psnames/ccextractor-psnames.o ../src/thirdparty/freetype/raster/ccextractor-raster.o ../src/thirdparty/freetype/sfnt/ccextractor-sfnt.o ../src/thirdparty/freetype/smooth/ccextractor-smooth.o ../src/thirdparty/freetype/truetype/ccextractor-truetype.o ../src/thirdparty/freetype/type1/ccextractor-type1.o ../src/thirdparty/freetype/type42/ccextractor-type42.o ../src/thirdparty/freetype/winfonts/ccextractor-winfnt.o -lm -lpthread -ldl -lgpac -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lavcodec -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lavformat -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lavutil -L/gnu/store/awps99vrf8jnd6wanvq2yw2k2jjf1bw3-ffmpeg-6.1.1/lib -lswscale -L/gnu/store/qr5snmjnyg6zj039hbv4y8vvpw62b420-leptonica-1.84.1/lib -lleptonica -lm ld: ../src/lib_ccx/ccextractor-hardsubx.o: in function `_init_hardsubx': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:232:(.text+0x5f2): undefined reference to `TessBaseAPICreate' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:261:(.text+0x67c): undefined reference to `TessVersion' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:267:(.text+0x6f5): undefined reference to `TessBaseAPIInit4' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:261:(.text+0x7f3): undefined reference to `TessVersion' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:274:(.text+0x832): undefined reference to `TessBaseAPIInit4' ld: ../src/lib_ccx/ccextractor-hardsubx.o: in function `_dinit_hardsubx': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:321:(.text+0x8a4): undefined reference to `TessBaseAPIEnd' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:322:(.text+0x8b0): undefined reference to `TessBaseAPIDelete' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:321:(.text+0x944): undefined reference to `TessBaseAPIEnd' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx.c:322:(.text+0x950): undefined reference to `TessBaseAPIDelete' ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_simple': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:17:(.text+0xc): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:18:(.text+0x1a): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:24:(.text+0x2a): undefined reference to `TessBaseAPIGetUTF8Text' ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_wordwise': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:35:(.text+0x89): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:36:(.text+0x97): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:42:(.text+0xb1): undefined reference to `TessBaseAPIGetIterator' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:110:(.text+0x120): undefined reference to `TessPageIteratorNext' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:52:(.text+0x135): undefined reference to `TessResultIteratorGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:56:(.text+0x155): undefined reference to `TessDeleteText' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:89:(.text+0x1a0): undefined reference to `TessResultIteratorWordFontAttributes' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:119:(.text+0x21a): undefined reference to `TessResultIteratorDelete' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:63:(.text+0x34e): undefined reference to `TessResultIteratorWordFontAttributes' ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_letterwise': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:128:(.text+0x415): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:129:(.text+0x423): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:135:(.text+0x439): undefined reference to `TessBaseAPIGetIterator' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:143:(.text+0x459): undefined reference to `TessResultIteratorGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:147:(.text+0x479): undefined reference to `TessDeleteText' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:156:(.text+0x4c1): undefined reference to `TessPageIteratorNext' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:159:(.text+0x4cd): undefined reference to `TessResultIteratorDelete' ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_simple_threshold': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:168:(.text+0x524): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:169:(.text+0x532): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:175:(.text+0x542): undefined reference to `TessBaseAPIGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:180:(.text+0x556): undefined reference to `TessBaseAPIMeanTextConf' ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_wordwise_threshold': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:194:(.text+0x5cf): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:195:(.text+0x5dd): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:201:(.text+0x5f4): undefined reference to `TessBaseAPIGetIterator' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:213:(.text+0x629): undefined reference to `TessResultIteratorGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:217:(.text+0x651): undefined reference to `TessDeleteText' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:218:(.text+0x65e): undefined reference to `TessResultIteratorConfidence' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:276:(.text+0x6e6): undefined reference to `TessPageIteratorNext' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:289:(.text+0x73a): undefined reference to `TessResultIteratorDelete' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:255:(.text+0x77e): undefined reference to `TessResultIteratorWordFontAttributes' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:229:(.text+0x85e): undefined reference to `TessResultIteratorWordFontAttributes' ld: ../src/lib_ccx/ccextractor-hardsubx_classifier.o: in function `get_ocr_text_letterwise_threshold': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:298:(.text+0x9df): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:299:(.text+0x9ed): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:305:(.text+0xa04): undefined reference to `TessBaseAPIGetIterator' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:316:(.text+0xa29): undefined reference to `TessResultIteratorGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:320:(.text+0xa49): undefined reference to `TessDeleteText' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:321:(.text+0xa56): undefined reference to `TessResultIteratorConfidence' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:334:(.text+0xabd): undefined reference to `TessPageIteratorNext' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/hardsubx_classifier.c:341:(.text+0xafa): undefined reference to `TessResultIteratorDelete' ld: ../src/lib_ccx/ccextractor-ocr.o: in function `delete_ocr': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:82:(.text+0x121): undefined reference to `TessBaseAPIEnd' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:83:(.text+0x12a): undefined reference to `TessBaseAPIDelete' ld: ../src/lib_ccx/ccextractor-ocr.o: in function `init_ocr': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:162:(.text+0x320): undefined reference to `TessBaseAPICreate' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:163:(.text+0x32b): undefined reference to `TessVersion' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:169:(.text+0x3a8): undefined reference to `TessBaseAPIInit4' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:181:(.text+0x3c1): undefined reference to `TessBaseAPISetPageSegMode' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:163:(.text+0x3fb): undefined reference to `TessVersion' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:176:(.text+0x443): undefined reference to `TessBaseAPIInit4' ld: ../src/lib_ccx/ccextractor-ocr.o: in function `delete_ocr': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:82:(.text+0x4e7): undefined reference to `TessBaseAPIEnd' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:83:(.text+0x4ef): undefined reference to `TessBaseAPIDelete' ld: ../src/lib_ccx/ccextractor-ocr.o: in function `ocr_bitmap': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:335:(.text+0x81a): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:336:(.text+0x824): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:352:(.text+0x839): undefined reference to `TessBaseAPIGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:358:(.text+0x85d): undefined reference to `TessDeleteText' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:369:(.text+0xb17): undefined reference to `TessBaseAPISetImage2' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:370:(.text+0xb21): undefined reference to `TessBaseAPIRecognize' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:685:(.text+0xb46): undefined reference to `TessResultIteratorDelete' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:377:(.text+0xb58): undefined reference to `TessBaseAPIGetIterator' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:583:(.text+0xb9b): undefined reference to `TessPageIteratorNext' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:384:(.text+0xbb5): undefined reference to `TessResultIteratorGetUTF8Text' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:387:(.text+0xbe0): undefined reference to `TessPageIteratorBoundingBox' ld: /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/ocr.c:582:(.text+0x1194): undefined reference to `TessDeleteText' ld: ../src/lib_ccx/ccextractor-params.o: in function `version': /tmp/guix-build-ccextractor-0.94-0.81fdecd.drv-0/source/linux/../src/lib_ccx/params.c:1080:(.text+0x29a2): undefined reference to `TessVersion' collect2: error: ld returned 1 exit status ``` It seems a link directive to the tesseract shared library is missing.
claunia commented 2026-01-29 16:54:46 +00:00
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@apteryks commented on GitHub (Jul 22, 2025):

Workaround: run ./configure with the LDFLAGS=-ltesseract" flag.

@apteryks commented on GitHub (Jul 22, 2025): Workaround: run ./configure with the `LDFLAGS=-ltesseract"` flag.
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Reference: starred/ccextractor#838
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