Hi,
I am using automake. I wonder where the jpeg libraries are installed.

So CPPFLAGS tells the compiler where the static libraries are stored?

CPPFLAGS = -I$????????

will this work?

In Makefile.am
LIBS=${LIB} -lstdc++ -lpthread -ljpeg

Do I need to put the dir in INCLUDES

In configure.in
LIBS="${LIB} -lstdc++ -lpthread -ljpeg"
Sorry, I am a newbie of Linux, I don't really want to touch the part that isn't necessary (private? Joking

Thanks
Jack

configure.in:

AC_INIT(unittest.cpp)
AM_INIT_AUTOMAKE(unittest, 1.0)
AC_PROG_CXX
AC_PROG_GCC_TRADITIONAL
AM_PROG_LEX
AC_PROG_YACC
AC_OUTPUT(Makefile)
LIBS="${LIB} -lstdc++ -lpthread -ljpeg"



Makefile.am:

INCLUDES = -I$/opt/arcom/arcom-linux/include -I$/usr/X11R6/include

LIBS=${LIB} -L$/opt/arcom/arcom-linux/lib -lstdc++ -lpthread -ljpeg

MAINTAINERCLEANFILES = aclocal.m4 config.guess config.sub configure depcomp \
install-sh ltmain.sh Makefile.in missing mkinstalldirs


bin_PROGRAMS = unittest
unittest_SOURCES = unittest.cpp baseobject.cpp thread.cpp Packet.cpp Camera.cpp Webcam.cpp Utility.cpp calibration.cpp PlumeAnalysis.cpp socket.c

I've got link time error when I cross-compiled my project.
The functions in libjpeg were not recognised, but I've included it in Makefile.am (see above), is it an extension (.cpp and .c) issue?
Thanks
Jack

Try using:

LDFLAGS=-L <directory where jpeg library is located>

I found my libs were located /usr/bin
But LDFLAGS=-L/usr/bin
did not help
Thanks
Jack

That's a very strange place for libraries to live. On UNIX-like OS', the usually live under /lib, /usr/lib, or /usr/local/lib. The library name will end in .a (for static archive libraries), .so or .sl for shared libraries. Under Windows, the shared libraries usually have a .dll file extension.

In case of a cross-compilation project, would that affect the link time results? I wonder
Thanks
Jack

Oh
I found
armbe-linux-g++ is the compiler in use
g++ != gcc
??
Thanks
Jack

cd '/home/Jacky/Projects/RMVES/ver1_0' && gmake -k -j1
cd . && /bin/sh /home/Jacky/Projects/RMVES/ver1_0/missing --run aclocal-1.9
cd . && /bin/sh /home/Jacky/Projects/RMVES/ver1_0/missing --run automake-1.9 --gnu
cd . && /bin/sh /home/Jacky/Projects/RMVES/ver1_0/missing --run autoconf
/bin/sh ./config.status --recheck
running /bin/sh ./configure --no-create --no-recursion
installing -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for g++... g++
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of g++... gcc3
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking dependency style of gcc... gcc3
checking for flex... flex
checking for yywrap in -lfl... yes
checking lex output file root... lex.yy
checking whether yytext is a pointer... yes
checking for bison... bison -y
configure: creating ./config.status
/bin/sh ./config.status
config.status: creating Makefile
config.status: executing depfiles commands
linking unittest (g++)
/usr/bin/ld: cannot find -lX11
collect2: ld returned 1 exit status
gmake: *** [unittest] Error 1
gmake: Target `all' not remade because of errors.
*** Exited with status: 2 ***

I realized that the underlying problem is the script. But does anyone spot the error? I have been staring at this piece of code for a few days..
Thanks
Jack

I wonder what the variable name for C++ compiler is...
I tried CXX=gcc
CC=gcc
$CXX=gcc (but failed)
etc
Thanks
Jack