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Allow to search for multiple libraries in package

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Some packages are split up in several library files, where each of them
doesn't have their own CMake find-module. So we cannot put this list in
the prerequisites. Unlike the headers, where we just add the directory,
all the libraries must be explicitly named on the link line. Thus, we
should allow to specify more than one name in the lib parameter.

The first name specified is designated as the "primary" library and is
assigned to the _LIBRARY variable; the others occur in _LIBRARIES as if
they were prerequisites.

Note that the build system cannot replicate this setup itself; it always
assumes that we are building (at most) one library from the source
files.
This commit is contained in:
Roland Kaufmann 2013-10-22 11:23:57 +02:00 committed by Bård Skaflestad
parent cb89621813
commit 7e024a2cce
1 changed files with 40 additions and 10 deletions
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50
cmake/Modules/OpmPackage.cmake
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@ -206,13 +206,30 @@ macro (find_opm_package module deps header lib defs prog conf)
set (_no_system_lib "${_no_system}")
endif ()
find_library (${module}_LIBRARY
NAMES "${lib}"
PATHS ${_guess_bin}
HINTS ${PkgConf_${module}_LIBRARY_DIRS} ${_guess_hints_bin}
PATH_SUFFIXES "lib" "lib/.libs" ".libs" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}" "build-cmake/lib"
${_no_system_lib}
)
# if there is more than one library, then look for all of them, putting
# them in variables with the name of the library appended. however, the
# first entry is assumed to be the "primary" library and will be named
# like the module. thus, with a lib entry of "foo;bar", the first library
# is called ${module}_LIBRARY and the second ${module}_LIBRARY_bar
foreach (_lib IN ITEMS ${lib})
# don't include any suffix if it is the first one
if ("${lib}" MATCHES "^${_lib}")
set (_which)
else ()
set (_which "_${_lib}")
endif ()
find_library (${module}_LIBRARY${_which}
NAMES "${_lib}"
PATHS ${_guess_bin}
HINTS ${PkgConf_${module}_LIBRARY_DIRS} ${_guess_hints_bin}
PATH_SUFFIXES "lib" "lib/.libs" ".libs" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}" "build-cmake/lib"
${_no_system_lib}
)
# debug info if we didn't find the desired library
if (NOT ${module}_LIBRARY${_which})
message (STATUS "Failed to find library \"${_lib}\" for module ${module}")
endif ()
endforeach (_lib)
else (NOT "${lib}" STREQUAL "")
set (${module}_LIBRARY "")
endif (NOT "${lib}" STREQUAL "")
@ -220,7 +237,13 @@ macro (find_opm_package module deps header lib defs prog conf)
# add dependencies so that our result variables are complete
# list of necessities to build with the software
set (${module}_INCLUDE_DIRS "${${module}_INCLUDE_DIR}")
set (${module}_LIBRARIES "${${module}_LIBRARY}")
foreach (_lib IN ITEMS ${lib})
if ("${lib}" MATCHES "^${_lib}")
set (${module}_LIBRARIES "${${module}_LIBRARY}")
else ()
list (APPEND ${module}_LIBRARIES "${${module}_LIBRARY_${_lib}}")
endif ()
endforeach (_lib)
# period because it should be something that evaluates to true
# in find_package_handle_standard_args
set (${module}_ALL_PREREQS ".")
@ -295,8 +318,15 @@ macro (find_opm_package module deps header lib defs prog conf)
set (_lib_var "")
set (_and_lib_var)
else ("${lib}" STREQUAL "")
set (_lib_var "${module}_LIBRARY")
set (_and_lib_var AND ${_lib_var})
foreach (_lib IN ITEMS ${lib})
if ("${lib}" MATCHES "^${_lib}")
set (_lib_var "${module}_LIBRARY")
set (_and_lib_var AND ${_lib_var})
else ()
list (APPEND _lib_var "${module}_LIBRARY_${_lib}")
set (_and_lib_var ${_and_lib_var} AND "${module}_LIBRARY_${_lib}")
endif ()
endforeach (_lib)
endif ("${lib}" STREQUAL "")
# if the search is going to fail, then write these variables to
# the console as well as a diagnostics