---------- Forwarded Message ---------- Subject: Re: [CMake] cmake needs 2 runs to find boost Date: Thursday, November 05, 2015, 04:41:51 PM From: Andreas Naumann <andreas-naum...@gmx.net> To: Peter Steinbach <steinb...@scionics.de>
Hey Peter, It is not a solution, but I would set Boost_DEBUG to ON and compare the output of the first and the second cmake run. Andreas Am 05.11.2015 um 14:26 schrieb Peter Steinbach: > Hi to all, > > ok, I tried the attached minimal CMakeLists.txt again and found out that it > fails in the way I described only with the "MSYS Makefiles" generator. If I > use the same CMakeLists.txt without a custom generator (so MSVS is the default > IIRC), the libraries are found alright! > > Any ideas? > Best, > Peter > > On Thursday, November 05, 2015 01:41:33 PM Peter Steinbach wrote: >> Hi Benedikt, >> >> interesting thought, however I wonder why cmake is then capable of deducing >> the right boost version and include path. Just inside the first error >> message, I see: >> >> (x86)/CMake/share/cmake-3.2/Modules/FindBoost.cmake:1182 (message): >>>> Unable to find the requested Boost libraries. >>>> >>>> Boost version: 1.57.0 >>>> >>>> Boost include path: C:/msys64/mingw64/include >>>> >>>> Could not find the following static Boost libraries: >>>> boost_filesystem >>>> boost_system >> strange, isn't it? >> Peter >> >> On Thursday, November 05, 2015 11:41:10 AM Benedikt Hegner wrote: >>> Hi Peter, >>> >>> as I don't use windows at all, this is just a very wild guess... >>> >>> Could it be that in the second run you actually don't use >>> >>> /CMake/share/cmake-3.2/Modules/FindBoost.cmake >>> >>> but boost-config.cmake, which it now finds in the cached environment of >>> the first run? >>> >>> This assumes of course that you built boost w/ CMake and not bjam... >>> >>> Cheers, >>> >>> Benedikt >>> >>> On 03.11.2015 14:10, Peter Steinbach wrote: >>>> Hi to all, >>>> >>>> I tested this with cmake 3.2.2 and 3.3.2 and still get the same problem. >>>> I'd like to use boost with gcc on windows 7 64bit. I installed boost and >>>> gcc with msys2 as I cannot use MSVC for the actual project I am looking >>>> into for this. >>>> >>>> the funny thing, if I use the attached CMakeLists.txt on the machine and >>>> call: ``` >>>> $ cmake -G "MSYS Makefiles" -DBOOST_ROOT=C:/msys64/mingw64 - >>>> DBOOST_LIBRARYDIR==C:/msys64/mingw64/lib .. >>>> -- The CXX compiler identification is GNU 4.9.2 >>>> -- Check for working CXX compiler: C:/msys64/usr/bin/g++.exe >>>> -- Check for working CXX compiler: C:/msys64/usr/bin/g++.exe -- works >>>> -- Detecting CXX compiler ABI info >>>> -- Detecting CXX compiler ABI info - done >>>> -- Detecting CXX compile features >>>> -- Detecting CXX compile features - done >>>> setting win specific stuff >>>> CMake Error at C:/Program Files >>>> >>>> (x86)/CMake/share/cmake-3.2/Modules/FindBoost.cmake:1182 (message): >>>> Unable to find the requested Boost libraries. >>>> >>>> Boost version: 1.57.0 >>>> >>>> Boost include path: C:/msys64/mingw64/include >>>> >>>> Could not find the following static Boost libraries: >>>> boost_filesystem >>>> boost_system >>>> >>>> No Boost libraries were found. You may need to set BOOST_LIBRARYDIR >>>> to >>>> the >>>> directory containing Boost libraries or BOOST_ROOT to the location of >>>> Boost. >>>> >>>> Call Stack (most recent call first): >>>> CMakeLists.txt:17 (FIND_PACKAGE) >>>> >>>> CMake Error at CMakeLists.txt:24 (MESSAGE): >>>> Boost not found (C:/msys64/mingw64) >>>> >>>> -- Configuring incomplete, errors occurred! >>>> See also >>>> "C:/msys64/home/steinbac/development/cmake_sandbox/find_boost/build/CMak >>>> eF >>>> iles/CMakeOutput.log". $ cmake -G "MSYS Makefiles" >>>> -DBOOST_ROOT=C:/msys64/mingw64 - >>>> DBOOST_LIBRARYDIR==C:/msys64/mingw64/lib .. >>>> setting win specific stuff >>>> Boost 1.57 found __ >>>> -- Configuring done >>>> -- Generating done >>>> -- Build files have been written to: >>>> C:/msys64/home/steinbac/development/cmake_sandbox/find_boost/build >>>> ``` >>>> >>>> I'd like to link statically to multithreaded libboost_*-mt.a from my >>>> app. >>>> But it proofes really hard to find Boost in the first place. >>>> Any ideas? >>>> >>>> Peter > > ----------------------------------------- -- Peter Steinbach, Dr. rer. nat. 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