[Bug 230070] devel/cmake: check_library_exists fails to find libX11/XOpenIM
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230070 Adriaan de Groot changed: What|Removed |Added Resolution|--- |Not A Bug Status|In Progress |Closed --- Comment #4 from Adriaan de Groot --- Closing as "that's not how check_library_exists works". -- You are receiving this mail because: You are the assignee for the bug.
[Bug 230070] devel/cmake: check_library_exists fails to find libX11/XOpenIM
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230070
Adriaan de Groot changed:
What|Removed |Added
CC||adr...@freebsd.org
--- Comment #3 from Adriaan de Groot ---
This is a misunderstanding what CheckLibraryExists does. It takes **one**
LOCATION and checks for the given function in that location. You can pass it a
list, but in CMake's internals -- see CheckLibraryExists.cmake -- it then gets
passed on to try_compile as a string; this loses all the list-ness of LOCATION.
You can see this for yourself by running cmake --debug-trycompile and then
grepping through the resulting CMakeFiles/ directory.
The correct way (well, **one** working way) to look for XOpenIM is to *first*
find the library, then check for the function:
```
find_library(_x11forreal X11 HINTS ${X11_LIB_SEARCH_PATH})
if (_x11forreal)
check_library_exists(${_x11forreal} XOpenIM "" XIM2_FOUND)
if(${XIM2_FOUND})
MESSAGE("YES XOpenIM is found (2)")
else()
MESSAGE("NO XOpenIM is NOT found (2)")
endif()
endif()
```
This just leaves out the LOCATION and uses the direct path to the library.
Note, also, that X11_LIB_SEARCH_PATH is an internal variable, not documented,
that contains the list of places FindX11.cmake is going to look: it's not a
computed value. So another way to do this is to use the X11 library variable
that **is** documented:
```
check_library_exists(${X11_X11_LIB} XOpenIM "" XIM_FOUND)
```
I'll grant you that the documentation of check_library_exists could be a lot
better.
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[Bug 230070] devel/cmake: check_library_exists fails to find libX11/XOpenIM
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230070
Tobias C. Berner changed:
What|Removed |Added
Flags|maintainer-feedback?(kde@Fr |maintainer-feedback+
|eeBSD.org) |
CC||tcber...@freebsd.org
Status|New |In Progress
--- Comment #2 from Tobias C. Berner ---
Hi Yuri
I think this is due to /usr/local/{include,lib} not being in the default
compiler flags.
If you tell cmake to keep around the test-compile stuff, you should be able to
debug it more easily.
By setting X11_LIB_SEARCH_PATH and passing it as the LOCATION [1] argument, you
obviously help it look there :) You can see, that [2] simply passes the
LOCATION argument to try_compile as LINK_DIRECTORIES. Which again uses it as
link_directories(${LINK_DIRECTORIES}) [3]. Which you can find here [4].
mfg Tobias
[1] https://cmake.org/cmake/help/v3.12/module/CheckLibraryExists.html
[2]
https://gitlab.kitware.com/cmake/cmake/blob/master/Modules/CheckLibraryExists.cmake#L63
[3] https://cmake.org/cmake/help/v3.12/command/try_compile.html
[4] https://cmake.org/cmake/help/v3.12/command/link_directories.html
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[Bug 230070] devel/cmake: check_library_exists fails to find libX11/XOpenIM
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230070 --- Comment #1 from Yuri Victorovich --- Created attachment 195488 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=195488&action=edit CMakeLists.txt -- You are receiving this mail because: You are the assignee for the bug.
maintainer-feedback requested: [Bug 230070] devel/cmake: check_library_exists fails to find libX11/XOpenIM
Bugzilla Automation has asked k...@freebsd.org for maintainer-feedback: Bug 230070: devel/cmake: check_library_exists fails to find libX11/XOpenIM https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230070 --- Description --- The attached CMakeLists.txt fails to find libX11. 'find_package(X11 REQUIRED)' sets X11_LIB_SEARCH_PATH=/usr/pkg/xorg/lib;/usr/local/lib;/usr/X11R7/lib;/usr/openwi n/lib;/opt/X11/lib Despite the correct path /usr/local/lib being in X11_LIB_SEARCH_PATH check_library_exists still fails to find X11 and XOpenIM in it. Uncommenting the SET statement allows check_library_exists to find it. This is weird: shouldn't it have looked in each directory?
[Bug 230070] devel/cmake: check_library_exists fails to find libX11/XOpenIM
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230070 Bug ID: 230070 Summary: devel/cmake: check_library_exists fails to find libX11/XOpenIM Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Individual Port(s) Assignee: k...@freebsd.org Reporter: y...@freebsd.org Assignee: k...@freebsd.org Flags: maintainer-feedback?(k...@freebsd.org) The attached CMakeLists.txt fails to find libX11. 'find_package(X11 REQUIRED)' sets X11_LIB_SEARCH_PATH=/usr/pkg/xorg/lib;/usr/local/lib;/usr/X11R7/lib;/usr/openwin/lib;/opt/X11/lib Despite the correct path /usr/local/lib being in X11_LIB_SEARCH_PATH check_library_exists still fails to find X11 and XOpenIM in it. Uncommenting the SET statement allows check_library_exists to find it. This is weird: shouldn't it have looked in each directory? -- You are receiving this mail because: You are the assignee for the bug.
