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

[suzuki toshiya]

Dear Nik,

>   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

I think "Unknown keyword 'Libs.private' ..." might be caused by legacy
pkg-config which cannot parse the latest pkg-config data.
Is it possible for you to update pkg-config itself?

> 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?

I'm not sure. There is a possibility that qmake hides the debug messages from
your eyes (as configure by GNU autoconf does not pass error messages from the
compilers directly). Anyway, I don't know the exact answer.

Regards,
mpsuzuki


Nikolaus Neusser wrote:
> 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><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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> 
> 
> 
> 
> 
>