Test 32-bit build on 64-bit Debian host

main.c

#include <stdio.h>

#include <ft2build.h>

#include FT_FREETYPE_H

int main(int argc, char *argv[])
{
	int error;

	puts("hello");

	FT_Library  ft_inst;

	if ((error = FT_Init_FreeType(&ft_inst)) != 0)
	{
		fprintf(stderr, "unable to initalize FreeType library");
		exit(1);
	}

	return 0;
}

Makefile

CFLAGS=`pkg-config --cflags freetype2` -m32
LDFLAGS=`pkg-config --libs freetype2` -m32

$ file /usr/lib/i386-linux-gnu/libfreetype.so.6.12.3
/usr/lib/i386-linux-gnu/libfreetype.so.6.12.3: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, BuildID[sha1]=4a970c51f96f402b3011312348936f4f4c1c4f49, stripped

sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install build-essential gcc-multilib libfreetype6-dev:i386