[CMake] CMake Error: RPATH CHANGE

[Jim Leek]

> Having said that, if cmake knows that the executable is static, it shouldn't
> try to change the RPATH.
> Is the RPATH in the uninstalled executable empty ?
Yes, the RPATH in the static build is empty.  There's isn't a dynamic 
section at all, so there is no RPATH in the file.

That said, this issue was my fault, at least sort of.  I had a section 
in my CMakeLists.txt file to force some RPATH stuff. (See below.  
Without it I had some sort of issue with using the program from the 
build tree.)  I just needed to bracket that in an if(BUILD_SHARED) 
statement, so I wouldn't be forcing RPATH behavior on a static build.


# use, i.e. don't skip the full RPATH for the build tree
if(BUILD_SHARED)

SET(CMAKE_SKIP_BUILD_RPATH  FALSE)

# when building, don't use the install RPATH already
# (but later on when installing)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)

SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")

# add the automatically determined parts of the RPATH
# which point to directories outside the build tree to the install RPATH
SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
# the RPATH to be used when installing, but only if it's not a system 
directory
LIST(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES 
"${CMAKE_INSTALL_PREFIX}/lib" isSystemDir)
IF("${isSystemDir}" STREQUAL "-1")
    SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
ENDIF("${isSystemDir}" STREQUAL "-1")

endif(BUILD_SHARED)