Getting compilation errors whn included a third party library - c

Question

#include<stdio.h>
#include "flite.h"
cst_voice *register_cmu_us_kal();
int main()
{
cst_voice *v;
cst_wave *w;
char *text = "Hello world programming";
//Initialising the flite variables used
flite_init();
w = new_wave();
v = register_cmu_us_kal(NULL);
flite_text_to_speech(text,v,"hello_wave");
if(cst_wave_load_riff(w,"hello_wave")!=CST_OK_FORMAT){
printf("\nCompare_wave:Can read file or wrong format!\n");
}
else{
play_wave(w);
}
return 0;
}
Makefile
all:compile \
./compile
compile:eg1.o
gcc -o $# eg1.o
eg1.o:eg1.c $(LIBS_DIR) $(INC_DIR) $(LIBS)
gcc -c $<
LIBS_DIR = -L /home/b/flite-1.4-release/build/i386-linux-gnu/lib
INC_DIR = -I /home/b/flite-1.4-relase/include
LIBS = -lflite_cmu_us_slt -lflite -lflite_cmulex -lflite_cmu_time_awb -lflite_cmu_us_kal16 -lflite_cmu_us_kal -lflite_cmu_usenglish
INCLUDE:
clean:
rm -f *.o
I tried by giving he library and header file paths as LIBS_DIR = ../build/i386-linux-gnu/lib and INC_DIR = ../include
I tried the folowing c program by including a third party library. This program an a makefile is located in b\flite-1.4-release\Learnin_though_example folder. Th flite libraries are located in b\flite-1.4-release\build\i386-linux-gnu\lib and the header files are in b\flite-1.4-release\include .
I assume that i have given the makefile th correct path to search for the files. But its not identifyin it and i'm gettin an error as,
make clean all
rm -f *.o
gcc -c eg1.c
eg1.c:2:19: error: flite.h: No such file or directory
eg1.c:3: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
eg1.c: In function ‘main’:
eg1.c:6: error: ‘cst_voice’ undeclared (first use in this function)
eg1.c:6: error: (Each undeclared identifier is reported only once
eg1.c:6: error: for each function it appears in.)
eg1.c:6: error: ‘v’ undeclared (first use in this function)
eg1.c:7: error: ‘cst_wave’ undeclared (first use in this function)
eg1.c:7: error: ‘w’ undeclared (first use in this function)
eg1.c:17: error: ‘CST_OK_FORMAT’ undeclared (first use in this function)
make: *** [eg1.o] Error 1
Please help me understand what is the mistake i'm doing
EDITED:
I modiied th makefile as per matt's guidance:
all:compile
compile:eg1.o
gcc $(INC_DIR) $(LIB_DIR) -o $# $^ $(LIBS)
eg1.o:eg1.c
gcc $(INC_DIR) -o $# -c $^
LIBS_DIR = -L../build/i386-linux-gnu/lib
INC_DIR = -I../include
LIBS = -lflite -lflite_cmulex -lflite_cmu_time_awb -lflite_cmu_us_kal16 -lflite_cmu_us_kal -lflite_cmu_usenglish -lflite_cmu_us_slt
clean:
rm -f *.o
but i'm getting ifferent error whn compiled with the command "make clean all" as,
rm -f *.o
gcc -I../include -o eg1.o -c eg1.c
gcc -I../include -o compile eg1.o -lflite -lflite_cmulex -lflite_cmu_time_awb -lflite_cmu_us_kal16 -lflite_cmu_us_kal -lflite_cmu_usenglish -lflite_cmu_us_slt
/usr/bin/ld: cannot find -lflite
collect2: ld returned 1 exit status
make: *** [compile] Error 1
EDITED:
rm -f *.o
gcc -I../include -o eg1.o -c eg1.c
gcc -I../include -L../build/i386-linux-gnu/lib -o compile eg1.o -lflite -lflite_cmulex -lflite_cmu_time_awb -lflite_cmu_us_kal16 -lflite_cmu_us_kal -lflite_usenglish -lflite_cmu_us_slt -lflite_cmu_us_rms
../build/i386-linux-gnu/lib/libflite.so: undefined reference to `sin'
../build/i386-linux-gnu/lib/libflite.so: undefined reference to `exp'
../build/i386-linux-gnu/lib/libflite.so: undefined reference to `sqrt'
../build/i386-linux-gnu/lib/libflite.so: undefined reference to `log'
../build/i386-linux-gnu/lib/libflite.so: undefined reference to `fmod'
../build/i386-linux-gnu/lib/libflite.so: undefined reference to `pow'

Answer 1

Your makefile is, I'm afraid to say, completely broken.
The basic Makefile syntax is:
target: pre-requisite(s)
<tab>Stuff to do to build target from pre-reqs (if required)
So this is wrong, eg1.o can't be a pre-requisite for building itself.
compile:eg1.o
gcc -o eg1.o
You should have:
eg1.o: eg1.c
gcc $(INC_DIR) -o $# -c $^
($# is the target, $^ all the pre-reqs.)
Then you can:
myexe: eg1.o
gcc $(INC_DIR) $(LIBS_DIR) -o $# $^ $(LIBS)
This will produce myexe from eg1.o. And your all rule should be all: myexe, with no recipe (no commands), and at the top as you have it.
Then you've got your include directories and library directories mixed up. -I is for include paths, -L for library paths.
Place your variable definitions before the rules, that's more common/usual. And don't put a space between -L/-I and the path that follows it.

Answer 2

The include directories to search is specified by -I flag, not -L.
Change:
LIBS_DIR = -I /home/b/flite-1.4-release/build/i386-linux-gnu/lib
INC_DIR = -L /home/b/flite-1.4-relase/include
to:
LIBS_DIR = -L /home/b/flite-1.4-release/build/i386-linux-gnu/lib
INC_DIR = -I /home/b/flite-1.4-relase/include