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IDProjectCategoryView StatusDate SubmittedLast Update
0015768CMakeCMakepublic2015-10-05 10:132016-06-10 14:31
ReporterFrancis ANDRE 
Assigned ToKitware Robot 
PrioritynormalSeverityfeatureReproducibilityalways
StatusclosedResolutionmoved 
PlatformCygwinOSCYGWIN_NT-6.1-WOW idefix 2.2.1(0OS Version
Product VersionCMake 3.3.2 
Target VersionFixed in Version 
Summary0015768: Cygwin: create and install symbolic link for a versioned shared library
DescriptionHi

This command
install(
    TARGETS "${target_name}" EXPORT "${target_name}Targets"
    LIBRARY DESTINATION lib${LIB_SUFFIX}
    ARCHIVE DESTINATION lib${LIB_SUFFIX}
    RUNTIME DESTINATION bin
    INCLUDES DESTINATION include
    )

install the lib shared library with a symbolic link on Linux while it does not install a symbolic link on the archive on Cygwin, neither he does install a symbolic link on the runtime destination
Steps To Reproduce1/ Build a shared library on Cygwin
2/ install it
3/ No symbolic link are defined for the archive library, nor for the shared library.
TagsNo tags attached.
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  Notes
(0039514)
Brad King (manager)
2015-10-06 10:06

 Cygwin is built on Windows and so uses a separate import library for linking (e.g. "mylib.dll.a" for "mylib.dll"). CMake's logic on such DLL platforms installs the import library:

 https://cmake.org/gitweb?p=cmake.git;a=blob;f=Source/cmInstallCommand.cxx;hb=v3.3.2#l362 [^]
 https://cmake.org/gitweb?p=cmake.git;a=blob;f=Source/cmInstallCommand.cxx;hb=v3.3.2#l453 [^]

If Cygwin conventions have changed then CMake will need to be updated.
(0039525)
Francis ANDRE (reporter)
2015-10-07 06:21

 For a shared library name PocoZip with a SOVERSION=40, CMake/make install generates

on Linux
lrwxrwxrwx. 1 root root 16 7 oct. 12:11 /usr/local/lib/libPocoZip.so -> libPocoZip.so.40
-rwxr-xr-x. 1 root root 392424 7 oct. 12:01 /usr/local/lib/libPocoZip.so.40

on Cygwin in /usr/local/bin
-rwxr-xr-x 1 FrancisANDRE None 3990183 Oct 7 12:06 cygPocoZip-40.dll
on Cygwin in /usr/local/lib
-rw-r--r-- 1 FrancisANDRE None 526798 Oct 7 12:06 libPocoZip.dll.a


This issue asks Cmake/make install to generate an similar symbolic link on Cygwin as the one on Linux as

on Cygwin in /usr/local/bin
-rwxr-xr-x 1 FrancisANDRE None 3990183 Oct 7 12:06 cygPocoZip-40.dll
on Cygwin in /usr/local/lib
-rw-r--r-- 1 FrancisANDRE None 526798 Oct 7 12:06 libPocoZip-40.dll.a
lrwxrwxrwx 1 FrancisANDRE None 19 Oct 7 12:20 libPocoZip.dll.a -> libPocoZip-40.dll.a

This will allow to nstall multiple version of the same shared library which actually is impossible.
(0039561)
Francis ANDRE (reporter)
2015-10-10 07:11

 By the way, there should be also a symbolic link on the ddl for dlopen function call. The link should omit the SOVERSION as for the imported lib

on Cygwin in /usr/local/bin
-rwxr-xr-x 1 FrancisANDRE None 3990183 Oct 7 12:06 cygPocoZip-40.dll
lrwxrwxrwx 1 FrancisANDRE None 19 Oct 7 12:20 cygPocoZip.dll -> cygPocoZip-40.dll
(0042849)
Kitware Robot (administrator)
2016-06-10 14:29

 Resolving issue as `moved`.

This issue tracker is no longer used. Further discussion of this issue may take place in the current CMake Issues page linked in the banner at the top of this page.

 Issue History
Date Modified Username Field Change
2015-10-05 10:13 Francis ANDRE New Issue
2015-10-06 10:06 Brad King Note Added: 0039514
2015-10-07 06:21 Francis ANDRE Note Added: 0039525
2015-10-08 10:08 Brad King Severity minor => feature
2015-10-08 10:08 Brad King Status new => backlog
2015-10-08 10:08 Brad King Summary install command does not install symbolic link for a versioned shared library => Cygwin: create and install symbolic link for a versioned shared library
2015-10-10 07:11 Francis ANDRE Note Added: 0039561
2016-06-10 14:29 Kitware Robot Note Added: 0042849
2016-06-10 14:29 Kitware Robot Status backlog => resolved
2016-06-10 14:29 Kitware Robot Resolution open => moved
2016-06-10 14:29 Kitware Robot Assigned To => Kitware Robot
2016-06-10 14:31 Kitware Robot Status resolved => closed

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