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cmake: how to set libdir=/usr/local/lib64?

hello, I'm trying to compile a libvibble library:

https://packages.debian.org/ru/sid/libwibble-dev

on my Slackware, it uses cmake and when building the package uses usr/local/lib/pkgconfig/, ignoring the system settings $ PKG_CONFIG_PATH . How can I get it to use /usr/local/lib64? The LIB_SUFFIX configuration is not supported by this project.

from the root of the tree, mkdir build && cd build && ccmake ..
Pressing c to configure, it displays:

Code:

 CMAKE_BACKWARDS_COMPATIBILITY  *2.4                                          

 CMAKE_BUILD_TYPE                *                                            

 CMAKE_INSTALL_PREFIX            */usr/local                                  

 EXECUTABLE_OUTPUT_PATH          *                                            

 HAVE_TUT                        *OFF                                          

 LIBRARY_OUTPUT_PATH            *                                            

 RX_PATH                        */usr/include

So I assume that you need this option when running cmake: -DCMAKE_INSTALL_PREFIX=/usr

Hmm, i do not see any effect in two cases.

You can try to change my slackbuild, maybe I made a mistake somewhere:

https://paste.ee/p/G0AFV

I just built and installed a package using your SalckBuild with no issue and ran the binary at random against a header with no issue. So, what's wrong? I attach the content of the package.

Code:

didier[/tmp]$ wibble-test-genrunner header module_utils.h 

#undef NDEBUG

#include "module_utils.h"

#define RUN(x,y) x().y()

Quote:

usr/lib/
usr/lib/libwibble.a
usr/lib/pkgconfig/
usr/lib/pkgconfig/libwibble.pc

for 64-bit systems this should be usr/lib64

Does that really matter? The thing works.

But you can just move these files after having in the SlackBuild after make install if you want.

Quote:

Originally Posted by Didier Spaier (Post 5888120)

Does that really matter? The thing works.

But you can just move these files after having in the SlackBuild after make install if you want.

not good ide, this file contains filepaths

Code:

usr/lib/pkgconfig/libwibble.pc

-DLIBRARY_OUTPUT_PATH=/usr/lib64 ???

This is necessary, otherwise other programs that depend on the libwibble library will not work because of the incorrect libdir.

Could you make changes to the script? I also think that libwibble.pc also needs to fix libdir

Quote:

Originally Posted by USUARIONUEVO (Post 5888121)

-DLIBRARY_OUTPUT_PATH=/usr/lib64 ???

does not work

Quote:

Originally Posted by olevenets2 (Post 5888096)

The short answer is that you can't. Whoever wrote this CMakeLists.txt never considered this use case and it would need to be fixed. See the lines in wibble/CMakeLists.txt which contain "DESTINATION".

you would need to fix the cmake

if this is the source of this lib, than I guess here for the generated pkg-config file

https://github.com/metux/libwibble/b...eLists.txt#L68

and here
https://github.com/metux/libwibble/b...eLists.txt#L76

for the install location

what does this lib actually do?

Hello,

The patch below should do the trick:

Code:

--- wibble/CMakeLists.txt.orig        2018-08-06 10:04:02.959164066 +0200

+++ wibble/CMakeLists.txt        2018-08-06 10:07:29.051173261 +0200

@@ -65,20 +65,31 @@

 

 set( prefix "${CMAKE_INSTALL_PREFIX}" )

 set( exec_prefix "${prefix}/bin" )

+

+if (DEFINED WIBBLE_LIBARCH) 

+  if (NOT DEFINED libdir)

+    set ( libdir "${prefix}/lib${WIBBLE_LIBARCH}" )

+  endif ()

+  set ( WIBBLE_DESTINATION "lib${WIBBLE_LIBARCH}" )

+else ()

+  set(WIBBLE_DESTINATION "lib/${CMAKE_LIBRARY_ARCHITECTURE}")

+endif()

+

 if (NOT DEFINED libdir)

        set( libdir "${prefix}/lib" )

 endif()

 set( includedir "${prefix}/include" )

 

+

 # cmake-time configuration

 configure_file( ${wibble_SOURCE_DIR}/libwibble.pc.in

                ${wibble_BINARY_DIR}/libwibble.pc @ONLY )

 

 # make install

-install( TARGETS wibble DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE} COMPONENT wibble_dev )

+install( TARGETS wibble DESTINATION ${WIBBLE_DESTINATION} COMPONENT wibble_dev )

 

 if( NOT WIN32 )

-install( FILES ${wibble_BINARY_DIR}/libwibble.pc DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig COMPONENT wibble_dev )

+install( FILES ${wibble_BINARY_DIR}/libwibble.pc DESTINATION ${WIBBLE_DESTINATION}/pkgconfig COMPONENT wibble_dev )

 install( FILES libwibble.m4 DESTINATION share/aclocal COMPONENT wibble_dev )

 install( FILES wibble-test-genrunner.1 DESTINATION share/man/man1 COMPONENT wibble_dev )

 endif( NOT WIN32 )

This patch adds the variable WIBBLE_LIBARCH which allows to specify the architecture.

Sample usage :

Code:

$ cd libwibble-1.1

$ patch -p0< /path/to/wibble.patch



$ mkdir _build

$ cd _build

$ cmake -DCMAKE_INSTALL_PREFIX=/usr -DWIBBLE_ARCH=64 ..

...

$ make install DESTDIR=./TEST

$ ls TEST/usr

bin  include  lib64  share



$ ls TEST/usr/lib64

libwibble.a  pkgconfig



$ cat TEST/usr/lib64/pkgconfig

prefix=/usr

exec_prefix=/usr/bin

libdir=/usr/lib64

includedir=/usr/include



Name: libwibble

Description: Library of useful C++ code

Version: 1.1

Libs: -L${libdir} -lwibble

Cflags: -I${includedir}

--
SeB

phenixia2003, thank you very much, your patch works fine!