Re: [ft] Fw: Could you help me for debugging FreeType library?

[suzuki toshiya]

Hi,

It seems that cmake experts have left FreeType, so I try to respond
you although I'm not an expert.

The shortest response would be: "CMakeLists.txt of FreeType does not
support Debug build, so your attempt would not work". Nothing to say,
the maintainers would welcome the proposal of patch, could you draft
something?

--
following is longer response.

My first question is: cmake has any predefined compiler flag set for
CMAKE_C_FLAGS_DEBUG? By brief checking of cmake manual, it seems that
the effect of CMAKE_BUILD_TYPE "Debug" is only the reflection of the
CMAKE_C_FLAGS_DEBUG option in the compilation. I cannot find any
predefined set of CMAKE_C_FLAGS_DEBUG from the manual, and in my
experiment on macOS, no typical debug options like "-g" is given to.
I'm afraid default value of CMAKE_C_FLAGS_DEBUG is empty, so, nothing
special happened (please try "make VERBOSE=1" to check the commands
are being issued).

In my impression, expecting "I set CMAKE_BUILD_TYPE to Debug, so the
softwares should be built for debug mode" is something like a person
wondering as "I changed the suffix of teacup.txt from txt to jpg, so
I get teacup.jpg, but my browser does not show the picture of teacup.
why?". In the package of the softwares whose CMakeLists.txt is ready
for debug build, -DCMAK_BUILD_TYPE=Debug might work, but FT is not such.

Regards,
mpsuzuki

Werner LEMBERG wrote:
> Please help this guy.
> 
> 
>     Werner
> 
> 
> ------------------------------------------------------------------------

> Hi Werner Lemberg:
> 
> I am work focus rendering 2d text ,so I want to study your Project "FreeType",
> 
> so I write a program ,use it to test "FreeType".
> 
> 
> First of all,I git sources of FreeType,compile it to libfreetype.dylib on 
> MacOS use Cmake:
> 
> 
> I modified CMakeLists.txt of FreeType and add a line :
> 
> SET(CMAKE_BUILD_TYPE "Debug")
> 
> then use cmake compile,
> ---------------?
> mkdir build
> cd build
> cmake -D BUILD_SHARED_LIBS:BOOL=true ..
> make
> sudo make install?
> ---------------
> 
> 
> 
> Second I write a  test program  on MacOS.
> 
> 
> 
> 
> But I can't use gdb by command line to debugging into libfreetype.dylib!
> 
> 
> Can you help me ?
> 
> 
> Thans a lot.
> 
> 
> Best regards.
> 
> 
> 韩忠涛
> 终端网络部  大播放内核
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