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[fluid-dev] Re: Using cmake for the fink builds of fluidsynth


From: Pedro Lopez-Cabanillas
Subject: [fluid-dev] Re: Using cmake for the fink builds of fluidsynth
Date: Fri, 24 Sep 2010 23:15:02 +0200
User-agent: KMail/1.13.5 (Linux/2.6.34.7-0.3-desktop; KDE/4.4.4; i686; ; )

Hi,

I've committed now a change to the SVN (r371) initializing the variable  
CMAKE_INSTALL_NAME_DIR in the main CMakeLists.txt when configuring FS for Mac 
OSX, because this variable should always be set with the same value. I don't 
want to do that with the other variables, but you can set them easily in the 
command line or using the GUI CMake interface. For instance this command line

cmake .. -DCMAKE_INSTALL_PREFIX=/sw -DLIB_SUFFIX='' \
         -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=1 \
         -DCMAKE_INSTALL_RPATH=/sw/lib

is equivalent to your patch.

The LIB_SUFFIX variable was already declared with the CACHE option. It is 
initialized to "64" in machines using 64 bit pointers, but you can change it 
anyway in the command line or using the GUI.

The RPATH related variables [1] can also be set in the command line, and it 
seems wrong to me hardcoding some choices in the CMake scripts, because the 
settings are expected to be different depending on the system and the type of 
user. I use RPATH in Linux with the default settings, because it is convenient 
for me as developer. Other people may prefer to use -DCMAKE_SKIP_RPATH=1 in 
the command line, to avoid RPATH in their Unix builds. In Windows, this 
feature doesn't exist. Some packagers (for instance, Debian) build the 
software with the default RPATH settings, stripping later the paths from the 
binaries before rolling the packages.

Regards,
Pedro

[1] http://www.cmake.org/Wiki/CMake_RPATH_handling
PD: please use the mailing list, it accepts small attachments.

On Wednesday 22 September 2010, you wrote:
> hello all
> 
> While writing a build/install script for the new fluidsynth (1.1.2)  
> using autotools posed no problem, I decided to do a script using cmake  
> instead.
> 
> This approach exposed certain portability issues which I brought to  
> the attention of the Fink Core team. Anyway, I had the privilege of  
> receiving some great advice from Benjamin Reed aka Ranger Rick (who  
> happens to be one of the coolest guys I know).
> 
> In the cmake script that Ranger Rick suggested to me (attached), he  
> uses the SET command with the CACHE option. Here he sets values for  
> variables like CMAKE_INSTALL_RPATH_USE_LINK_PATH. So I added these  
> suggestions to the Apple Mac OSX part of Pedro's CMakeLists.txt file  
> and the fink package for fluidsynth was easily compiled and installed.
> 
> It would be great if both the assistance of Jean-Fran├žois Mertens and  
> Benjamin Reed could be acknowledged for the next release.
> 
> Also, in the "Downloads" section, could you also add "fink install  
> fluidsynth".
> 
> Best wishes,
> Ebrahim
> 
> 
>   
>    
--- fluidsynth-1.1.2/CMakeLists.txt.orig        2010-08-31 23:24:53.000000000 
-0400
+++ fluidsynth-1.1.2/CMakeLists.txt             2010-09-21 08:14:09.000000000 
-0400
@@ -345,6 +345,16 @@
     pkg_check_modules ( DBUS dbus-1>=1.0.0 )
     set ( DBUS_SUPPORT ${DBUS_FOUND} )
 endif ( enable-dbus )
+
+set (LIB_SUFFIX "" CACHE STRING "Define suffix of directory name (32/64)" )
+set (LIB_DESTINATION "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}" CACHE STRING 
"Library directory name")
+
+set(CMAKE_INSTALL_RPATH_USE_LINK_PATH  TRUE)
+set(CMAKE_INSTALL_RPATH ${LIB_DESTINATION} )
+
+if(APPLE)
+  set(CMAKE_INSTALL_NAME_DIR ${LIB_DESTINATION})
+endif(APPLE)
  
 # General configuration file
 configure_file ( ${CMAKE_SOURCE_DIR}/src/config.cmake 




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