Undefined reference for FreeType 2… here is a solution to the problem.
Undefined reference for FreeType 2
Undefined reference error 2. When building a simple example with FreeType, I get undefined reference error 2
gcc `/usr/bin/freetype-config --cflags` `/usr/bin/freetype-config --libs` a.c
/tmp/ccuSpdkr.o: In function `main':
a.c:(.text+0x10): undefined reference to `FT_Init_FreeType'
collect2: error: ld returned 1 exit status
I’m on Ubuntu 12.10 x64. The packages libfreetype6 and libfreetype6-dev are installed.
File a.c
is:
#include <stdio.h>
#include <ft2build.h>
#include FT_FREETYPE_H
int main() {
FT_Library library;
FT_Init_FreeType( &library );
return 0;
}
I tried two-step compilation to make sure everything is on 64bit :
> gcc -c `/usr/bin/freetype-config --cflags` a.c
> file a.o
a.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> /usr/bin/freetype-config --cflags
-I/usr/include/freetype2
> /usr/bin/freetype-config --libs
-L/usr/lib/x86_64-linux-gnu -lfreetype -lz
> file /usr/lib/x86_64-linux-gnu/libfreetype.so.6.9.0
/usr/lib/x86_64-linux-gnu/libfreetype.so.6.9.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]= 0x8ed223c2650372fc88b41fd348a72f03329adefa, stripped
What am I missing?
Solution
You should place the linker flag after the target file and/or source file; And not
gcc `freetype-config --libs` a.c
Write
gcc a.c `freetype-config --libs`