Setting zlib path when compiling on Windows,
Re: Setting zlib path when compiling on Windows,
- Re: Setting zlib path when compiling on Windows, Andreas Falkenhahn (2017/10/02 21:34:44)
- Re: Setting zlib path when compiling on Windows, Thomas Klausner (2017/10/02 21:28:00)
On 02.10.2017 at 23:27 Thomas Klausner wrote: > On Mon, Oct 02, 2017 at 10:51:25PM +0200, Andreas Falkenhahn wrote: >> I'm trying to compile libzip on Windows using CMake to generate >> makefiles. Libzip needs zlib so I'm doing the following: >> mkdir build >> cd build >> cmake -DZLIB_LIBRARY=../../../zlib-1.2.11 >> -DZLIB_INCLUDE_DIR=../../../zlib-1.2.11 .. >> This doesn't work, however. I get the following error: >> CMake Error at C:/Program Files >> (x86)/CMake/share/cmake-3.2/Modules/FindPackageHandleStandardArgs.cmake:138 >> (message): >> Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR) >> Why is that? I have defined ZLIB_LIBRARY and ZLIB_INCLUDE_DIR to point >> to the latest zlib. >> I've also tried the following: >> mkdir build >> cd build >> cmake .. -DZLIB_LIBRARY=../../../zlib-1.2.11 >> -DZLIB_INCLUDE_DIR=../../../zlib-1.2.11 >> When I run CMake like this, I get the following two warnings: >> CMake Warning: >> Manually-specified variables were not used by the project: >> ZLIB_INCLUDE_DIR >> ZLIB_LIBRARY >> In comparison to the first approach, however, build files are now written to >> my build >> directory. When running nmake, however, only zlib seems to get built. libzip >> itself >> isn't built at all. > This confuses me. We do not distribute infrastructure to build zlib. > zlib needs to be built first separately. Well, CMake probably fetches CMakeLists.txt from the zlib directory and then just builds CMake... >> I'm out of ideas here. What am I doing wrong? > When I run it locally (just 'cmake ..', and on NetBSD, not Linux) I get > ZLIB_INCLUDE_DIR:PATH=/usr/include > ZLIB_LIBRARY_DEBUG:FILEPATH=ZLIB_LIBRARY_DEBUG-NOTFOUND > ZLIB_LIBRARY_RELEASE:FILEPATH=/usr/lib/libz.so > in my CMakeCache.txt file. So it seems that ZLIB_LIBRARY might have to > point to the actual library and not a directory. Keep in mind that I'm on Windows. This is the actual problem here :) Of course on Linux and Mac zlib is already installed but on Windows I need to point CMake to zlib explicitly. But currently I'm failing to see how to do that as all my approaches have failed so far. Your suggestion of setting ZLIB_LIBRARY to the actual library instead of a directory also doesn't help because I aim to link statically against both libzip and zlib so all libzip should actually need is access to the zlib headers but I don't see how to pass that path to CMake... -- Best regards, Andreas Falkenhahn mailto:andreas%falkenhahn.com@localhost
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