通过Makefile生成并生成脚本，但是与等效的Makefile.am不兼容（给出未定义的参考错误）
[英]Build through Makefile and build script works but with equivalent Makefile.am doesnt.(Gives undefined reference errors)
问题描述
I'm trying to convert the build mechanism of ccextractor (Open source closed caption extractor) from custom Makefile to Autotools generated Makefile. 
我正在尝试将ccextractor（开源隐藏式字幕提取器）的构建机制从自定义Makefile转换为Autotools生成的Makefile。
Supplied Makefile looks like this: 提供的Makefile如下所示：
SHELL = /bin/sh
CC = gcc
SYS := $(shell gcc -dumpmachine)
CFLAGS = -O3 -std=gnu99 -s
INCLUDE = -Isrc/gpacmp4/ -Isrc/libpng -Isrc/lib_hash -Isrc/protobuf-c -Isrc/zlib -Isrc/lib_ccx -Isrc/.
INCLUDE += -Isrc/zvbi -Isrc/utf8proc
ALL_FLAGS = -Wno-write-strings -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT
LDFLAGS = -lm
ifneq (, $(findstring linux, $(SYS)))
CFLAGS +=-DGPAC_CONFIG_LINUX
endif
TARGET = ccextractor
OBJS_DIR = objs
VPATH = src:src/gpacmp4:src/libpng:src/zlib:src/lib_ccx:src/zvbi:src/lib_hash:src/utf8proc:src/protobuf-c
SRCS_DIR = src
SRCS_C = $(wildcard $(SRCS_DIR)/*.c)
OBJS = $(SRCS_C:$(SRCS_DIR)/%.c=$(OBJS_DIR)/%.o)
SRCS_CCX_DIR = $(SRCS_DIR)/lib_ccx
SRCS_CCX = $(wildcard $(SRCS_CCX_DIR)/*.c)
OBJS_CCX = $(SRCS_CCX:$(SRCS_CCX_DIR)/%.c=$(OBJS_DIR)/%.o)
SRCS_PNG_DIR = $(SRCS_DIR)/libpng
SRCS_PNG = $(wildcard $(SRCS_PNG_DIR)/*.c)
OBJS_PNG = $(SRCS_PNG:$(SRCS_PNG_DIR)/%.c=$(OBJS_DIR)/%.o)
SRCS_ZVBI_DIR = $(SRCS_DIR)/zvbi
SRCS_ZVBI = $(wildcard $(SRCS_ZVBI_DIR)/*.c)
OBJS_ZVBI = $(SRCS_ZVBI:$(SRCS_ZVBI_DIR)/%.c=$(OBJS_DIR)/%.o)
SRCS_GPACMP4_DIR = $(SRCS_DIR)/gpacmp4
SRCS_GPACMP4_C = $(wildcard $(SRCS_GPACMP4_DIR)/*.c)
SRCS_GPACMP4_CPP = $(wildcard $(SRCS_GPACMP4_DIR)/*.cpp)
OBJS_GPACMP4 = $(SRCS_GPACMP4_C:$(SRCS_GPACMP4_DIR)/%.c=$(OBJS_DIR)/%.o) \
$(SRCS_GPACMP4_CPP:$(SRCS_GPACMP4_DIR)/%.cpp=$(OBJS_DIR)/%.o)
SRCS_ZLIB_DIR = $(SRCS_DIR)/zlib
SRCS_ZLIB = $(wildcard $(SRCS_ZLIB_DIR)/*.c)
OBJS_ZLIB = $(SRCS_ZLIB:$(SRCS_ZLIB_DIR)/%.c=$(OBJS_DIR)/%.o)
SRCS_HASH_DIR = $(SRCS_DIR)/lib_hash
SRCS_HASH = $(wildcard $(SRCS_HASH_DIR)/*.c)
OBJS_HASH = $(SRCS_HASH:$(SRCS_HASH_DIR)/%.c=$(OBJS_DIR)/%.o)
SRCS_UTF8_DIR = $(SRCS_DIR)/utf8proc
SRCS_UTF8 = $(SRCS_UTF8_DIR)/utf8proc.c
OBJS_UTF8 = $(SRCS_UTF8:$(SRCS_UTF8_DIR)/%.c=$(OBJS_DIR)/%.o)
INSTLALL = cp -f -p
INSTLALL_PROGRAM = $(INSTLALL)
DESTDIR = /usr/bin
ifeq ($(ENABLE_HARDSUBX),yes)
ENABLE_OCR=yes
CFLAGS+=-DENABLE_HARDSUBX
CFLAGS+= $(shell pkg-config --cflags libavcodec)
CFLAGS+= $(shell pkg-config --cflags libavformat)
CFLAGS+= $(shell pkg-config --cflags libavutil)
CFLAGS+= $(shell pkg-config --cflags libswscale)
AV_LDFLAGS+= $(shell pkg-config --libs libavcodec )
AV_LDFLAGS+= $(shell pkg-config --libs libavformat )
AV_LDFLAGS+= $(shell pkg-config --libs libavutil )
AV_LDFLAGS+= $(shell pkg-config --libs libswscale )
ifeq ($(AV_LDFLAGS),$(EMPTY))
$(error **ERROR** "libav not found")
else
$(info "libav found")
endif
LDFLAGS+= $(AV_LDFLAGS)
endif
ifeq ($(ENABLE_OCR),yes)
CFLAGS+=-DENABLE_OCR -DPNG_NO_CONFIG_H
LEPT_LDFLAGS+= $(shell pkg-config --libs lept)
ifneq ($(shell pkg-config --exists tesseract), $(EMPTY))
TESS_LDFLAGS+= $(shell pkg-config --libs tesseract)
TESS_CFLAGS+= $(shell pkg-config --cflags tesseract)
else
#fix for raspberry pi not having a pkgconfig file for tesseract
ifneq ($(wildcard /usr/include/tesseract/*),$(EMPTY))
TESS_LDFLAGS+= -ltesseract
TESS_CFLAGS+= -I/usr/include/tesseract
endif
endif
#error checking of library are there or not
ifeq ($(TESS_LDFLAGS),$(EMPTY))
$(error **ERROR** "tesseract not found")
else
#TODO print the version of library found
$(info "tesseract found")
endif
ifeq ($(LEPT_LDFLAGS),$(EMPTY))
$(error **ERROR** "leptonica not found")
else
#TODO print the version of library found
$(info "Leptonica found")
endif
CFLAGS += $(TESS_CFLAGS)
CFLAGS += $(shell pkg-config --cflags lept)
LDFLAGS += $(TESS_LDFLAGS)
LDFLAGS += $(LEPT_LDFLAGS)
endif
ifeq ($(ENABLE_FFMPEG),yes)
CFLAGS+=-DENABLE_FFMPEG
CFLAGS+= $(shell pkg-config --cflags libavcodec)
CFLAGS+= $(shell pkg-config --cflags libavformat)
CFLAGS+= $(shell pkg-config --cflags libavutil)
LDFLAGS+= $(shell pkg-config --libs libavcodec )
LDFLAGS+= $(shell pkg-config --libs libavformat )
LDFLAGS+= $(shell pkg-config --libs libavutil )
endif
.PHONY: all
all: pre-build objs_dir $(TARGET)
.PHONY: objs_dir
objs_dir:
mkdir -p $(OBJS_DIR)
$(TARGET): $(OBJS) $(OBJS_PNG) $(OBJS_GPACMP4) $(OBJS_ZVBI) $(OBJS_ZLIB) $(OBJS_HASH) $(OBJS_CCX) $(OBJS_UTF8)
$(CC) $(ALL_FLAGS) $(CFLAGS) $(OBJS) $(OBJS_CCX) $(OBJS_PNG) $(OBJS_ZVBI) $(OBJS_GPACMP4) $(OBJS_ZLIB) $(OBJS_HASH) $(OBJS_UTF8) $(LDFLAGS) -o $@
$(OBJS_DIR)/%.o: %.c
$(CC) -c $(ALL_FLAGS) $(INCLUDE) $(CFLAGS) $< -o $@
$(OBJS_DIR)/%.o: %.cpp
$(CC) -c $(ALL_FLAGS) $(INCLUDE) $(CFLAGS) $< -o $@ -Isrc/gpacmp4
$(OBJS_DIR)/ccextractor.o: ccextractor.c
$(CC) -c $(ALL_FLAGS) $(INCLUDE) $(CFLAGS) -O0 $< -o $@
.PHONY: clean
clean:
rm -rf $(TARGET) 2>/dev/null || true
rm -rf $(OBJS_CCX) $(OBJS_PNG) $(OBJS_ZLIB) $(OBJS_GPACMP4) $(OBJS_HASH) $(OBJS_UTF8) $(OBJS) 2>/dev/null || true
rm -rdf $(OBJS_DIR) 2>/dev/null || true
rm -rf .depend 2>/dev/null || true
.PHONY: install
install: $(TARGET)
$(INSTLALL_PROGRAM) $(TARGET) $(DESTDIR)
.PHONY: uninstall
uninstall:
rm -iv $(DESTDIR)/$(TARGET)
.PHONY: depend dep
depend dep:
$(CC) $(CFLAGS) $(INCLUDE) -E -MM $(SRCS_C) $(SRCS_PNG) $(SRCS_ZVBI) $(SRCS_ZLIB) $(SRCS_HASH) $(SRCS_UTF8) $(SRCS_CCX) \
$(SRCS_GPACMP4_C) $(SRCS_GPACMP4_CPP) |\
sed 's/^[a-zA-Z_0-9]*.o/$(OBJS_DIR)\/&/' > .depend
.PHONY: pre-build
pre-build:
./pre-build.sh
-include .depend
"ccextractor" is also built through a shell script called build “ ccextractor”也是通过称为build的shell脚本build
The build script which builds "ccextractor" perfectly fine is: 完美构建“ ccextractor”的build脚本为：
#!/bin/bash
BLD_FLAGS="-std=gnu99 -Wno-write-strings -DGPAC_CONFIG_LINUX -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR"
BLD_INCLUDE="-Isrc -I /usr/include/leptonica/ -I /usr/include/tesseract/ -Isrc/lib_ccx/ -Isrc/gpacmp4/ -Isrc/libpng/ -Isrc/zlib/ -Isrc/zvbi -Isrc/lib_hash -Isrc/protobuf-c -Isrc/utf8proc"
SRC_LIBPNG="$(find src/libpng/ -name '*.c')"
SRC_ZLIB="$(find src/zlib/ -name '*.c')"
SRC_ZVBI="$(find src/zvbi/ -name '*.c')"
SRC_CCX="$(find src/lib_ccx/ -name '*.c')"
SRC_GPAC="$(find src/gpacmp4/ -name '*.c')"
SRC_HASH="$(find src/lib_hash/ -name '*.c')"
SRC_PROTOBUF="$(find src/protobuf-c/ -name '*.c')"
SRC_UTF8PROC="src/utf8proc/utf8proc.c"
BLD_SOURCES="src/ccextractor.c $SRC_CCX $SRC_GPAC $SRC_ZLIB $SRC_ZVBI $SRC_LIBPNG $SRC_HASH $SRC_PROTOBUF $SRC_UTF8PROC"
BLD_LINKER="-lm -zmuldefs -l tesseract -l lept"
.**Stripped a call for shell script that checks git commit (Nothing that would interfere with the build**
out=$((LC_ALL=C gcc $BLD_FLAGS $BLD_INCLUDE -o ccextractor $BLD_SOURCES $BLD_LINKER) 2>&1)
res=$?
if [[ $out == *"gcc: command not found"* ]]
then
echo "Error: please install gcc";
exit 1
fi
if [[ $out == *"curl.h: No such file or directory"* ]]
then
echo "Error: please install curl development library (libcurl4-gnutls-dev for Debian/Ubuntu)";
exit 2
fi
if [[ $out == *"capi.h: No such file or directory"* ]]
then
echo "Error: please install tesseract development library (tesseract-ocr-dev for Debian/Ubuntu)";
exit 3
fi
if [[ $out == *"allheaders.h: No such file or directory"* ]]
then
echo "Error: please install leptonica development library (libleptonica-dev for Debian/Ubuntu)";
exit 4
fi
if [[ $res -ne 0 ]] # Unknown error
then
echo "Compiled with errors"
>&2 echo "$out"
exit 5
fi
echo "Compilation successful";
Building through above Makefile and build script works fine. 通过以上Makefile和build脚本进行build可以正常工作。 My Makefile.am looks like this: 我的Makefile.am看起来像这样：
AUTOMAKE_OPTIONS = foreign
bin_PROGRAMS = ccextractor
ccextractor_SOURCES = \
src/ccextractor.c \
src/gpacmp4/avc_ext.c \
src/gpacmp4/avilib.c \
src/gpacmp4/av_parsers.c \
src/gpacmp4/base_encoding.c \
src/gpacmp4/bitstream.c \
src/gpacmp4/box_code_3gpp.c \
src/gpacmp4/box_code_adobe.c \
src/gpacmp4/box_code_apple.c \
src/gpacmp4/box_code_base.c \
src/gpacmp4/box_code_drm.c \
src/gpacmp4/box_code_meta.c \
src/gpacmp4/box_funcs.c \
src/gpacmp4/configfile.c \
src/gpacmp4/data_map.c \
src/gpacmp4/desc_private.c \
src/gpacmp4/descriptors.c \
src/gpacmp4/drm_sample.c \
src/gpacmp4/error.c \
src/gpacmp4/gpac/avparse.h \
src/gpacmp4/gpac/base_coding.h \
src/gpacmp4/gpac/bitstream.h \
src/gpacmp4/gpac/config_file.h \
src/gpacmp4/gpac/configuration.h \
src/gpacmp4/gpac/constants.h \
src/gpacmp4/gpac/events_constants.h \
src/gpacmp4/gpac/ietf.h \
src/gpacmp4/gpac/internal
src/gpacmp4/gpac/internal/avilib.h \
src/gpacmp4/gpac/internal/isomedia_dev.h \
src/gpacmp4/gpac/internal/media_dev.h \
src/gpacmp4/gpac/internal/odf_dev.h \
src/gpacmp4/gpac/internal/odf_parse_common.h \
src/gpacmp4/gpac/internal/ogg.h \
src/gpacmp4/gpac/isomedia.h \
src/gpacmp4/gpac/list.h \
src/gpacmp4/gpac/math.h \
src/gpacmp4/gpac/media_tools.h \
src/gpacmp4/gpac/mpeg4_odf.h \
src/gpacmp4/gpac/network.h \
src/gpacmp4/gpac/revision.h \
src/gpacmp4/gpac/setup.h \
src/gpacmp4/gpac/sync_layer.h \
src/gpacmp4/gpac/tools.h \
src/gpacmp4/gpac/utf.h \
src/gpacmp4/gpac/version.h \
src/gpacmp4/gpac_ogg.c \
src/gpacmp4/hinting.c \
src/gpacmp4/ipmpx_code.c \
src/gpacmp4/ipmpx_parse.c \
src/gpacmp4/isom_intern.c \
src/gpacmp4/isom_read.c \
src/gpacmp4/isom_store.c \
src/gpacmp4/isom_write.c \
src/gpacmp4/list.c \
src/gpacmp4/math.c \
src/gpacmp4/media.c \
src/gpacmp4/media_odf.c \
src/gpacmp4/meta.c \
src/gpacmp4/movie_fragments.c \
src/gpacmp4/mp4.c \
src/gpacmp4/odf_code.c \
src/gpacmp4/odf_codec.c \
src/gpacmp4/odf_command.c \
src/gpacmp4/os_config_init.c \
src/gpacmp4/os_divers.c \
src/gpacmp4/os_file.c \
src/gpacmp4/qos.c \
src/gpacmp4/ReadMe.txt
src/gpacmp4/sample_descs.c \
src/gpacmp4/slc.c \
src/gpacmp4/stbl_read.c \
src/gpacmp4/stbl_write.c \
src/gpacmp4/track.c \
src/gpacmp4/tx3g.c \
src/gpacmp4/url.c \
src/gpacmp4/utf.c \
src/lib_ccx/activity.c \
src/lib_ccx/activity.h \
src/lib_ccx/asf_constants.h \
src/lib_ccx/asf_functions.c \
src/lib_ccx/avc_functions.c \
src/lib_ccx/avc_functions.h \
src/lib_ccx/bitstream.h \
src/lib_ccx/cc_bitstream.c \
src/lib_ccx/ccx_common_char_encoding.c \
src/lib_ccx/ccx_common_char_encoding.h \
src/lib_ccx/ccx_common_common.c \
src/lib_ccx/ccx_common_common.h \
src/lib_ccx/ccx_common_constants.c \
src/lib_ccx/ccx_common_constants.h \
src/lib_ccx/ccx_common_option.c \
src/lib_ccx/ccx_common_option.h \
src/lib_ccx/ccx_common_platform.h \
src/lib_ccx/ccx_common_structs.h \
src/lib_ccx/ccx_common_timing.c \
src/lib_ccx/ccx_common_timing.h \
src/lib_ccx/ccx_decoders_608.c \
src/lib_ccx/ccx_decoders_608.h \
src/lib_ccx/ccx_decoders_708.c \
src/lib_ccx/ccx_decoders_708_encoding.c \
src/lib_ccx/ccx_decoders_708_encoding.h \
src/lib_ccx/ccx_decoders_708.h \
src/lib_ccx/ccx_decoders_708_output.c \
src/lib_ccx/ccx_decoders_708_output.h \
src/lib_ccx/ccx_decoders_common.c \
src/lib_ccx/ccx_decoders_common.h \
src/lib_ccx/ccx_decoders_isdb.c \
src/lib_ccx/ccx_decoders_isdb.h \
src/lib_ccx/ccx_decoders_structs.h \
src/lib_ccx/ccx_decoders_vbi.c \
src/lib_ccx/ccx_decoders_vbi.h \
src/lib_ccx/ccx_decoders_xds.c \
src/lib_ccx/ccx_decoders_xds.h \
src/lib_ccx/ccx_demuxer.c \
src/lib_ccx/ccx_demuxer.h \
src/lib_ccx/ccx_dtvcc.c \
src/lib_ccx/ccx_dtvcc.h \
src/lib_ccx/ccx_encoders_common.c \
src/lib_ccx/ccx_encoders_common.h \
src/lib_ccx/ccx_encoders_curl.c \
src/lib_ccx/ccx_encoders_g608.c \
src/lib_ccx/ccx_encoders_helpers.c \
src/lib_ccx/ccx_encoders_helpers.h \
src/lib_ccx/ccx_encoders_sami.c \
src/lib_ccx/ccx_encoders_smptett.c \
src/lib_ccx/ccx_encoders_splitbysentence.c \
src/lib_ccx/ccx_encoders_spupng.c \
src/lib_ccx/ccx_encoders_spupng.h \
src/lib_ccx/ccx_encoders_srt.c \
src/lib_ccx/ccx_encoders_ssa.c \
src/lib_ccx/ccx_encoders_structs.h \
src/lib_ccx/ccx_encoders_transcript.c \
src/lib_ccx/ccx_encoders_webvtt.c \
src/lib_ccx/ccx_encoders_xds.c \
src/lib_ccx/ccx_encoders_xds.h \
src/lib_ccx/ccx_gxf.c \
src/lib_ccx/ccx_gxf.h \
src/lib_ccx/ccx_mp4.h \
src/lib_ccx/ccx_share.c \
src/lib_ccx/ccx_share.h \
src/lib_ccx/ccx_sub_entry_message.pb-c.c \
src/lib_ccx/ccx_sub_entry_message.pb-c.h \
src/lib_ccx/CMakeLists.txt
src/lib_ccx/compile_info.h \
src/lib_ccx/compile_info_real.h \
src/lib_ccx/configuration.c \
src/lib_ccx/configuration.h \
src/lib_ccx/disable_warnings.h \
src/lib_ccx/dvb_subtitle_decoder.c \
src/lib_ccx/dvb_subtitle_decoder.h \
src/lib_ccx/dvd_subtitle_decoder.c \
src/lib_ccx/dvd_subtitle_decoder.h \
src/lib_ccx/es_functions.c \
src/lib_ccx/es_userdata.c \
src/lib_ccx/ffmpeg_intgr.c \
src/lib_ccx/ffmpeg_intgr.h \
src/lib_ccx/file_buffer.h \
src/lib_ccx/file_functions.c \
src/lib_ccx/general_loop.c \
src/lib_ccx/hamming.h \
src/lib_ccx/hardsubx.c \
src/lib_ccx/hardsubx_classifier.c \
src/lib_ccx/hardsubx_decoder.c \
src/lib_ccx/hardsubx.h \
src/lib_ccx/hardsubx_imgops.c \
src/lib_ccx/hardsubx_utility.c \
src/lib_ccx/lib_ccx.c \
src/lib_ccx/lib_ccx.h \
src/lib_ccx/list.h \
src/lib_ccx/matroska.c \
src/lib_ccx/matroska.h \
src/lib_ccx/myth.c \
src/lib_ccx/networking.c \
src/lib_ccx/networking.h \
src/lib_ccx/ocr.c \
src/lib_ccx/ocr.h \
src/lib_ccx/output.c \
src/lib_ccx/params.c \
src/lib_ccx/params_dump.c \
src/lib_ccx/sequencing.c \
src/lib_ccx/spupng_encoder.c \
src/lib_ccx/spupng_encoder.h \
src/lib_ccx/stdintmsc.h \
src/lib_ccx/stream_functions.c \
src/lib_ccx/teletext.h \
src/lib_ccx/telxcc.c \
src/lib_ccx/ts_functions.c \
src/lib_ccx/ts_functions.h \
src/lib_ccx/ts_info.c \
src/lib_ccx/ts_tables.c \
src/lib_ccx/ts_tables_epg.c \
src/lib_ccx/utility.c \
src/lib_ccx/utility.h \
src/lib_ccx/wtv_constants.h \
src/lib_ccx/wtv_functions.c \
src/lib_hash/sha2.c \
src/lib_hash/sha2.h \
src/libpng/png.c \
src/libpng/pngconf.h \
src/libpng/pngdebug.h \
src/libpng/pngerror.c \
src/libpng/pngget.c \
src/libpng/png.h \
src/libpng/pnginfo.h \
src/libpng/pnglibconf.h \
src/libpng/pngmem.c \
src/libpng/pngpread.c \
src/libpng/pngpriv.h \
src/libpng/pngread.c \
src/libpng/pngrio.c \
src/libpng/pngrtran.c \
src/libpng/pngrutil.c \
src/libpng/pngset.c \
src/libpng/pngstruct.h \
src/libpng/pngtrans.c \
src/libpng/pngwio.c \
src/libpng/pngwrite.c \
src/libpng/pngwtran.c \
src/libpng/pngwutil.c \
src/protobuf-c/protobuf-c.c \
src/protobuf-c/protobuf-c.h \
src/utf8proc/utf8proc.c \
src/utf8proc/utf8proc_data.c \
src/utf8proc/utf8proc.h \
src/win_iconv/iconv.h \
src/win_iconv/win_iconv.c \
src/win_spec_incld/dirent.h \
src/win_spec_incld/inttypes.h \
src/win_spec_incld/stdint.h \
src/zlib/adler32.c \
src/zlib/compress.c \
src/zlib/crc32.c \
src/zlib/crc32.h \
src/zlib/deflate.c \
src/zlib/deflate.h \
src/zlib/gzclose.c \
src/zlib/gzguts.h \
src/zlib/gzlib.c \
src/zlib/gzread.c \
src/zlib/gzwrite.c \
src/zlib/infback.c \
src/zlib/inffast.c \
src/zlib/inffast.h \
src/zlib/inffixed.h \
src/zlib/inflate.c \
src/zlib/inflate.h \
src/zlib/inftrees.c \
src/zlib/inftrees.h \
src/zlib/trees.c \
src/zlib/trees.h \
src/zlib/uncompr.c \
src/zlib/zconf.h \
src/zlib/zlib.h \
src/zlib/zutil.c \
src/zlib/zutil.h \
src/zvbi/bcd.h \
src/zvbi/bit_slicer.c \
src/zvbi/bit_slicer.h \
src/zvbi/decoder.c \
src/zvbi/macros.h \
src/zvbi/misc.h \
src/zvbi/raw_decoder.c \
src/zvbi/raw_decoder.h \
src/zvbi/sampling_par.c \
src/zvbi/sampling_par.h \
src/zvbi/sliced.h \
src/zvbi/zvbi_decoder.h
ccextractor_CFLAGS =-std=gnu99 -Wno-write-strings -DGPAC_CONFIG_LINUX -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR
ccextractor_CPPFLAGS =-I /usr/include/leptonica/ -I /usr/include/tesseract/ -I src/lib_ccx/ -I src/gpacmp4/ -I src/libpng/ -I src/zlib/ -I src/zvbi/ -I src/lib_hash/ -I src/protobuf-c/ -I src/utf8proc/
ccextractor_LDADD =-lm -ltesseract -llept
ccextractor_LDFLAGS=-zmuldefs
tree in src dir is: src目录中的tree是：
.
├── ccextractor.c
├── CCExtractorConfig.h.in
├── ccextractor.o
├── CMakeLists.txt
├── gpacmp4
│ ├── avc_ext.c
│ ├── avc_ext.o
│ ├── avilib.c
│ ├── descriptors.o
│ ├── drm_sample.c
│ ├── drm_sample.o
│ ├── error.c
│ ├── error.o
│ ├── gpac
│ │ ├── avparse.h
│ │ ├── base_coding.h
│ │ ├── bitstream.h
│ │ ├── config_file.h
│ │ ├── configuration.h
│ │ ├── constants.h
│ │ ├── events_constants.h
│ │ ├── ietf.h
│ │ ├── internal
│ │ │ ├── avilib.h
│ │ │ ├── isomedia_dev.h
│ │ │ ├── media_dev.h
│ │ │ ├── odf_dev.h
│ │ │ ├── odf_parse_common.h
│ │ │ └── ogg.h
│ │ ├── isomedia.h
│ │ ├── list.h
│ │ ├── math.h
│ │ ├── media_tools.h
│ │ ├── mpeg4_odf.h
│ │ ├── network.h
│ │ ├── revision.h
│ │ ├── setup.h
│ │ ├── sync_layer.h
│ │ ├── tools.h
│ │ ├── utf.h
│ │ └── version.h
│ ├── gpac_ogg.c
│ ├── hinting.c
│ ├── ipmpx_code.c
│ ├── ipmpx_parse.c
│ ├── isom_intern.c
│ ├── isom_read.c
│ ├── isom_store.c
│ ├── isom_write.c
│ ├── list.c
│ ├── math.c
│ ├── media.c
│ ├── media_odf.c
│ ├── meta.c
│ ├── movie_fragments.c
│ ├── mp4.c
│ ├── odf_code.c
│ ├── odf_codec.c
│ ├── odf_command.c
│ ├── os_config_init.c
│ ├── os_divers.c
│ ├── os_file.c
│ ├── qos.c
│ ├── ReadMe.txt
│ ├── sample_descs.c
│ ├── slc.c
│ ├── stbl_read.c
│ ├── stbl_write.c
│ ├── track.c
│ ├── tx3g.c
│ ├── url.c
│ └── utf.c
├── lib_ccx
│ ├── activity.c
│ ├── activity.h
│ ├── asf_constants.h
│ ├── asf_functions.c
│ ├── avc_functions.c
│ ├── avc_functions.h
│ ├── bitstream.h
│ ├── hamming.h
│ ├── hardsubx.c
│ ├── hardsubx_classifier.c
│ ├── hardsubx_decoder.c
│ ├── hardsubx.h
│ ├── hardsubx_imgops.c
│ ├── hardsubx_utility.c
│ ├── ts_functions.h
│ ├── ts_info.c
│ ├── ts_tables.c
│ ├── ts_tables_epg.c
│ ├── utility.c
│ ├── utility.h
│ ├── wtv_constants.h
│ └── wtv_functions.c
├── lib_hash
│ ├── README
│ ├── sha2.c
│ └── sha2.h
├── libpng
│ ├── png.c
│ ├── pngconf.h
│ ├── pngdebug.h
│ ├── pngerror.c
│ ├── pngget.c
│ ├── png.h
│ ├── pnginfo.h
│ └── pngwutil.c
├── protobuf-c
│ ├── protobuf-c.c
│ └── protobuf-c.h
├── utf8proc
│ ├── utf8proc.c
│ ├── utf8proc_data.c
│ └── utf8proc.h
├── win_iconv
│ ├── iconv.h
│ └── win_iconv.c
├── win_spec_incld
│ ├── dirent.h
│ ├── inttypes.h
│ └── stdint.h
├── zlib
│ ├── adler32.c
│ ├── compress.c
│ ├── crc32.c
│ ├── crc32.h
│ ├── trees.c
│ ├── trees.h
│ ├── uncompr.c
│ ├── zconf.h
│ ├── zlib.h
│ ├── zutil.c
│ └── zutil.h
└── zvbi
├── bcd.h
├── bit_slicer.c
├── bit_slicer.h
├── decoder.c
├── macros.h
├── misc.h
├── raw_decoder.c
├── raw_decoder.h
And also, all includes are done with full path in sub directories of src , like for a file in gpacmp4 directory, #include <gpac/avparse.h> . 而且，所有包含都使用src子目录中的完整路径来完成，例如gpacmp4目录中的文件#include <gpac/avparse.h> 。 All but the main ccextractor.c file, for which all the -I flags are provided. 除了主ccextractor.c文件外，所有文件都提供了-I flags 。
Even the slightest help is appreciated. 即使有丝毫帮助，我们也感激不尽。
Here are some initial statements which make invokes: 以下是一些可以make调用的初始语句：
gcc -DHAVE_CONFIG_H -I. -I /usr/include/leptonica/ -I /usr/include/tesseract/ -I src/lib_ccx/ -I src/gpacmp4/ -I src/libpng/ -I src/zlib/ -I src/zvbi/ -I src/lib_hash/ -I src/protobuf-c/ -I src/utf8proc/ -std=gnu99 -Wno-write-strings -DGPAC_CONFIG_LINUX -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR -g -O2 -MT src/ccextractor-ccextractor.o -MD -MP -MF src/.deps/ccextractor-ccextractor.Tpo -c -o src/ccextractor-ccextractor.o `test -f 'src/ccextractor.c' || echo './'`src/ccextractor.c
mv -f src/gpacmp4/.deps/ccextractor-avc_ext.Tpo src/gpacmp4/.deps/ccextractor-avc_ext.Po
gcc -DHAVE_CONFIG_H -I. -I /usr/include/leptonica/ -I /usr/include/tesseract/ -I src/lib_ccx/ -I src/gpacmp4/ -I src/libpng/ -I src/zlib/ -I src/zvbi/ -I src/lib_hash/ -I src/protobuf-c/ -I src/utf8proc/ -std=gnu99 -Wno-write-strings -DGPAC_CONFIG_LINUX -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR -g -O2 -MT src/gpacmp4/ccextractor-avilib.o -MD -MP -MF src/gpacmp4/.deps/ccextractor-avilib.Tpo -c -o src/gpacmp4/ccextractor-avilib.o `test -f 'src/gpacmp4/avilib.c' || echo './'`src/gpacmp4/avilib.c
mv -f src/gpacmp4/.deps/ccextractor-avilib.Tpo src/gpacmp4/.deps/ccextractor-avilib.Po
Statement which make invokes just before showing undefined reference errors: 在显示未定义的引用错误之前， make调用的语句：
gcc -std=gnu99 -Wno-write-strings -DGPAC_CONFIG_LINUX -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR -g -O2 -zmuldefs -o ccextractor src/ccextractor-ccextractor.o src/gpacmp4/ccextractor-avc_ext.o src/gpacmp4/ccextractor-avilib.o src/gpacmp4/ccextractor-av_parsers.o src/gpacmp4/ccextractor-base_encoding.o src/gpacmp4/ccextractor-bitstream.o src/gpacmp4/ccextractor-box_code_3gpp.o src/gpacmp4/ccextractor-box_code_adobe.o src/gpacmp4/ccextractor-box_code_apple.o src/gpacmp4/ccextractor-box_code_base.o src/gpacmp4/ccextractor-box_code_drm.o src/gpacmp4/ccextractor-box_code_meta.o src/gpacmp4/ccextractor-box_funcs.o src/gpacmp4/ccextractor-configfile.o src/gpacmp4/ccextractor-data_map.o src/gpacmp4/ccextractor-desc_private.o src/gpacmp4/ccextractor-descriptors.o src/gpacmp4/ccextractor-drm_sample.o src/gpacmp4/ccextractor-error.o -lm -ltesseract -llept
/media/mayank/Mayank/GSOC 2017/Projects/ccextractor/src/ccextractor.c:32: undefined reference to `mprint'
/media/mayank/Mayank/GSOC 2017/Projects/ccextractor/src/ccextractor.c:33: undefined reference to `change_filename_requested'
src/ccextractor-ccextractor.o: In function `main':
/media/mayank/Mayank/GSOC 2017/Projects/ccextractor/src/ccextractor.c:68: undefined reference to `init_options'
/media/mayank/Mayank/GSOC 2017/Projects/ccextractor/src/ccextractor.c:123: undefined reference to `params_dump'
src/gpacmp4/ccextractor-drm_sample.o: In function `gf_isom_ipmpx_remove_tool_list':
/media/mayank/Mayank/GSOC 2017/Projects/ccextractor/src/gpacmp4/drm_sample.c:1421: undefined reference to `gf_odf_desc_del'
collect2: error: ld returned 1 exit status
Makefile:497: recipe for target 'ccextractor' failed
make[1]: *** [ccextractor] Error 1
make[1]: Leaving directory '/media/mayank/Mayank/GSOC 2017/Projects/ccextractor'
Makefile:335: recipe for target 'all' failed
make: *** [all] Error 2
PS: Any help is appreciated.I tried many things including changing the path of the #include <path/to/header> statements in code and then adding -I statement for those path in CPPFLAGS but that didn't help either. PS：可以提供任何帮助，我做了很多尝试，包括更改代码中的#include <path/to/header>语句的#include <path/to/header> ，然后在CPPFLAGS为这些路径添加-I语句，但这都没有帮助。 Almost all the undefined reference errors are from the functions declared in the headers residing in subdirectories of directories in source like, src/dir/subdir the -I flags are added only till src/dir/ and then the files in src/dir/ have statements like #include<subdir/filename.h> . 几乎所有的未定义引用错误是由居住在源目录的子目录头声明的功能，如， src/dir/subdir的-I添加标志只能做到src/dir/然后将文件中src/dir/有诸如#include<subdir/filename.h>类的语句。
PPS: I used grep -r "<Name_of_function_leading_to_error>" . PPS：我使用了grep -r "<Name_of_function_leading_to_error>" . in src to find out the declaration header. 在src中找出宣告标头。
1 个解决方案
解决方案1
0 2017-03-11 12:41:28
Undefined references mean missing libraries or wrong library order. 未定义的引用意味着缺少库或库顺序错误。 So changing -I flags has no effect. 因此，更改-I标志无效。
- Find out which library contains the symbols 找出哪个库包含符号
- Check if they are on the linker line and add them if they are missing 检查它们是否在链接器行上，如果缺少则添加它们
- If they are on the linke line, verify that the order is correct 如果它们在链接行上，请验证顺序是否正确
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.
相关问题
Linux Makefile.am错误“未定义引用” - Linux Makefile.am error “undefined reference to”
Makefile.am中的ifdef - ifdef in Makefile.am
自定义Makefile正常工作时，使用自动工具进行make会产生未定义的参考错误 - make using autotools gives undefined reference errors while custom Makefile works fine
在项目中没有Makefile.am的Makefile.in - Makefile.in without Makefile.am in projects
Makefile.def和Makefile.am - Makefile.def vs Makefile.am
Makefile引发未定义的参考错误 - Makefile throwing undefined reference errors
包括 <Python.h> 到makefile.am - Include <Python.h> to makefile.am
在Makefile.am（automake）中使用if语句 - using if statement in Makefile.am(automake)
如何在Makefile.am中使用条件 - How to use condition in Makefile.am
NetBeans无法识别Makefile.am - NetBeans doesn't recognize Makefile.am
相关标签