Re: [ft] Freetype2-dev package not found when crosscompiling

[Nikolaus Neusser]

ok, i did the following:
  - export all variables like before including setting PKG_CONFIG_DEBUG_SPEW
  - i ran on the host: pkg-config --modversion freetype2
  -> Output, see below:

Note:
An interesting thing i just noticed is: When i run qmake (having set PKG_CONFIG_DEBUG_SPEW) i don't get any debug messages like when manually running pkg-config.
Only the error message: Project ERROR: freetype2 development package not found
Could this maybe mean, that qmake is not calling pkg-config?

Output for: "pkg-config --modversion freetype2"

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

Am 06.11.2016 um 09:11 schrieb suzuki toshiya:

Dear Lawrence,

Thank you for good pointing out. Now I'm afraid that there is a possibility
that setting both of PKG_CONFIG_SYSROOT_DIR & PKG_CONFIG_LIBDIR made pkg-config
search wrong directory. Something like this.

PKG_CONFIG_SYSROOT_DIR=/sysroot/cross-blahblahblah
-> pkg-config will search /sysroot/cross-blahblahblah/usr/lib/pkgconfig/

PKG_CONFIG_LIBDIR=/sysroot/cross-blahblahblah/usr/lib/pkgconfig/
-> pkg-config will search /sysroot/cross-blahblahblah/usr/lib/pkgconfig/

PKG_CONFIG_SYSROOT_DIR=/sysroot/cross-blahblahblah
PKG_CONFIG_LIBDIR=/sysroot/cross-blahblahblah/usr/lib/pkgconfig/
-> pkg-config will search
/sysroot/cross-blahblahblah/sysroot/cross-blahblahblah/usr/lib/pkgconfig/

--

Nik, if you set PKG_CONFIG_DEBUG_SPEW and execute pkg-config,
you would receive some messages telling where freetype2.pc comes from, like this.

...
Looking for package 'freetype2'
Looking for package 'freetype2-uninstalled'
Reading 'freetype2' from file '/usr/lib/x86_64-linux-gnu/pkgconfig/freetype2.pc'
Parsing package file '/usr/lib/x86_64-linux-gnu/pkgconfig/freetype2.pc'
  line>prefix=/usr
...

Please confirm which freetype2.pc is used.

Regards,
mpsuzuki


Lawrence D'Oliveiro wrote:

On Sun, 6 Nov 2016 07:22:35 +0100, Nikolaus Neusser wrote:

All i know is, that the developer of the plugin told
me, that freetype2 is found through pkg-config.

According to the man page <https://linux.die.net/man/1/pkg-config>, you
have to set the PKG_CONFIG_SYSROOT_DIR environment variable to point to
where the includes and libs for the target system are kept, in order to
do cross-compilation.

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