sorry for this question that may seem trivial, but I looked at a few tutorials and SO questions and still could not figure out what is wrong.
Anyway, when using gcc, the linker is not able to find functions in the static library I have included.
Error message:
arm-none-linux-gnueabi-gcc -I. -I./include yuv.c -c -o yuv.o
arm-none-linux-gnueabi-gcc -I. -I./include main.c -c -o main.o
arm-none-linux-gnueabi-gcc -L./lib -I. -I./include yuv.o main.o -lpthread -lrt -ljpeg -o grab.elf
main.o: In function `jpegWrite':
main.c:(.text+0x118): undefined reference to `jpeg_std_error'
main.c:(.text+0x134): undefined reference to `jpeg_CreateCompress'
main.c:(.text+0x144): undefined reference to `jpeg_stdio_dest'
main.c:(.text+0x17c): undefined reference to `jpeg_set_defaults'
main.c:(.text+0x198): undefined reference to `jpeg_set_quality'
main.c:(.text+0x1a8): undefined reference to `jpeg_start_compress'
main.c:(.text+0x1e4): undefined reference to `jpeg_write_scanlines'
main.c:(.text+0x200): undefined reference to `jpeg_finish_compress'
main.c:(.text+0x20c): undefined reference to `jpeg_destroy_compress'
collect2: ld returned 1 exit status
make: *** [grab.elf] Error 1
My file structure is as follows:
Makefile
main.c
In Folder lib
libjpeg.a
My Makefile reads:
GCC=gcc
INC_PATH= -I. -I./include
LIBS_PATH = -L./lib
HEADER_FILE=./yuv.h ./include/jpeglib.h
grab.elf: yuv.o main.o
$(CROSS_COMPILE)$(GCC) $(LIBS_PATH) $(INC_PATH) yuv.o main.o -lpthread -lrt -ljpeg -o grab.elf
yuv.o:yuv.c $(HEADER_FILE)
$(CROSS_COMPILE)$(GCC) $(INC_PATH) yuv.c -c -o yuv.o
main.o:main.c $(HEADER_FILE)
$(CROSS_COMPILE)$(GCC) $(INC_PATH) main.c -c -o main.o
I also tried:
nm libjpeg.a | grep jpeg_std
000001f0 T _jpeg_stdio_dest
00000140 T _jpeg_stdio_src
000001f0 T _jpeg_std_error
000012c0 R _jpeg_std_message_table
Would any kind soul care to help me? Thank you.
