lcd_mkfont (LCDKit) show “freetype render error！“ on CentOS6

Purpose:

Introduce how to solve the issue of freetype error when use lcd_mkfont to make font library on CentOS 6.

Scope:

CentOS 6

Target Audience:

Advantechers technician

Advantech lcdkit users

Contents：

When use lcd_mkfont (LCDKit) to creat font library on CentOS 6 (CentOS 6.6), it shows errors as the following. CentOS 7 doesn't have this issue.

This issue is related to freetype built in CentOS 6.6 (v2.3.11, it is an older version and cannot support source-han-sans font files), and can be resolved by update freetype to a newer version.

Because CentOS 6.6 cannot use yum install to install/update packages on-line now, you need to update it manually.

1. Download source code from the following link (the latest version is 2.11.0)  

    https://download.savannah.gnu.org/releases/freetype/

2. Unzip and install

   # tar zxvf freetype-2.11.0.tar.gz

   # cd freetype-2.11.0

   # ./configure

   # make install

3. Update the soft link of libfreetype

   # cp /home/freetype-2.11.0/objs/.libs/libfreetype.so.6.18.0 /usr/lib64/

   # cd /usr/lib64/

   # rm -f libfreetype.so

   # ln -s libfreetype.so.6.18.0 libfreetype.so

   # rm -f libfreetype.so.6

   # ln -s libfreetype.so.6.18.0 libfreetype.so.6

Now you can use lcd_mkfont to create font library normally.