Freetype2-dev package not found when crosscompiling

[ben80]

Hi @all,

i am trying to crosscompile a plugin for QT5.6, but the necessary freetype2 development package is not found by qmake (->pkg-config).

I already asked in the freetype forum, with no success.
So, i would appreciate any advice.

my system:

• Host: debian 8, jessie
• target: raspberry pi 1, raspbian, jessie
• i installed: libfreetype2-dev on the target through sudo apt-get install
• i updated my host sysroot

qt pro file:

• CONFIG += link_pkgconfig
• PKGCONFIG += freetype2

Error message:

• qmake fails with the message: "Project ERROR: freetype2 development package not found"

Environment variables:
sysroot=~/opt_qt_for_rpi/qt5.6.1-1/sysroot
export PKG_CONFIG_SYSROOT_DIR=${sysroot}
export PKG_CONFIG_DIR=
export PKG_CONFIG_DEBUG_SPEW=1
export PKG_CONFIG_LIBDIR=${sysroot}/usr/lib/pkgconfig:${sysroot}/usr/share/pkgconfig
export PKG_CONFIG_PATH=${sysroot}
export COMPILER_PATH=~/opt_qt_for_rpi/qt5.6.1-1/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin

This is what i tried so far:

1. Searching for "ft2build.h" on the host: -> it's there in the sysroot folder
   ..sysroot/usr/include/freetype2/ft2build.h

2. letting pkg-config search for it on the host: -> it's there in the sysroot folder
   set PKG_CONFIG_DEBUG_SPEW
   pkg-config --modversion freetype2

   Output:

Looking for package 'freetype2'
Looking for package 'freetype2-uninstalled'
Reading 'freetype2' from file '/home/niki/opt_qt_for_rpi/qt5.6.1-1/sysroot/usr/lib/arm-linux-gnueabihf/pkgconfig/freetype2.pc'
Parsing package file '/home/niki/opt_qt_for_rpi/qt5.6.1-1/sysroot/usr/lib/arm-linux-gnueabihf/pkgconfig/freetype2.pc'
  line>prefix=/usr
 Variable declaration, 'prefix' has value '/usr'
  line>exec_prefix=/usr
 Variable declaration, 'exec_prefix' has value '/usr'
  line>libdir=/usr/lib/arm-linux-gnueabihf
 Variable declaration, 'libdir' has value '/usr/lib/arm-linux-gnueabihf'
  line>includedir=/usr/include/freetype2
 Variable declaration, 'includedir' has value '/usr/include/freetype2'
  line>
  line>Name: FreeType 2
  line>URL: http://freetype.org
  line>Description: A free, high-quality, and portable font engine.
  line>Version: 18.0.12
  line>Requires:
  line>Requires.private:
  line>Libs: -L${libdir} -lfreetype
  line>Libs.private: -lz -lpng12 -lz -lm
Unknown keyword 'Libs.private' in '/home/niki/opt_qt_for_rpi/qt5.6.1-1/sysroot/usr/lib/arm-linux-gnueabihf/pkgconfig/freetype2.pc'
  line>Cflags: -I${includedir}
Path position of 'freetype2' is 2
Adding 'freetype2' to list of known packages
18.0.12

Thanks a lot,
Nik

[ben80]

Thanks for moving the thread.

Any Ideas for solving my problem?

[ben80]

Anybody who could provide some hints?
How do qmake and pkg-config work together?

[ben80]

Ok, i found the solution.
I had to recompile qmake with pkg-config enabled.