Commit 764fcd4e authored by incardon's avatar incardon

Adding missing cmake macros

parent 60f812c4
# CorrectWindowsPaths - this module defines one macro
#
# CONVERT_CYGWIN_PATH( PATH )
# This uses the command cygpath (provided by cygwin) to convert
# unix-style paths into paths useable by cmake on windows
macro (CONVERT_CYGWIN_PATH _path)
if (WIN32)
EXECUTE_PROCESS(COMMAND cygpath.exe -m ${${_path}}
OUTPUT_VARIABLE ${_path})
string (STRIP ${${_path}} ${_path})
endif (WIN32)
endmacro (CONVERT_CYGWIN_PATH)
# PackageMultipass - this module defines two macros
#
# FIND_PACKAGE_MULTIPASS (Name CURRENT
# STATES VAR0 VAR1 ...
# DEPENDENTS DEP0 DEP1 ...)
#
# This function creates a cache entry <UPPERCASED-Name>_CURRENT which
# the user can set to "NO" to trigger a reconfiguration of the package.
# The first time this function is called, the values of
# <UPPERCASED-Name>_VAR0, ... are saved. If <UPPERCASED-Name>_CURRENT
# is false or if any STATE has changed since the last time
# FIND_PACKAGE_MULTIPASS() was called, then CURRENT will be set to "NO",
# otherwise CURRENT will be "YES". IF not CURRENT, then
# <UPPERCASED-Name>_DEP0, ... will be FORCED to NOTFOUND.
# Example:
# find_path (FOO_DIR include/foo.h)
# FIND_PACKAGE_MULTIPASS (Foo foo_current
# STATES DIR
# DEPENDENTS INCLUDES LIBRARIES)
# if (NOT foo_current)
# # Make temporary files, run programs, etc, to determine FOO_INCLUDES and FOO_LIBRARIES
# endif (NOT foo_current)
#
# MULTIPASS_SOURCE_RUNS (Name INCLUDES LIBRARIES SOURCE RUNS LANGUAGE)
# Always runs the given test, use this when you need to re-run tests
# because parent variables have made old cache entries stale. The LANGUAGE
# variable is either C or CXX indicating which compiler the test should
# use.
# MULTIPASS_C_SOURCE_RUNS (Name INCLUDES LIBRARIES SOURCE RUNS)
# DEPRECATED! This is only included for backwards compatability. Use
# the more general MULTIPASS_SOURCE_RUNS instead.
# Always runs the given test, use this when you need to re-run tests
# because parent variables have made old cache entries stale.
macro (FIND_PACKAGE_MULTIPASS _name _current)
string (TOUPPER ${_name} _NAME)
set (_args ${ARGV})
list (REMOVE_AT _args 0 1)
set (_states_current "YES")
list (GET _args 0 _cmd)
if (_cmd STREQUAL "STATES")
list (REMOVE_AT _args 0)
list (GET _args 0 _state)
while (_state AND NOT _state STREQUAL "DEPENDENTS")
# The name of the stored value for the given state
set (_stored_var PACKAGE_MULTIPASS_${_NAME}_${_state})
if (NOT "${${_stored_var}}" STREQUAL "${${_NAME}_${_state}}")
set (_states_current "NO")
endif (NOT "${${_stored_var}}" STREQUAL "${${_NAME}_${_state}}")
set (${_stored_var} "${${_NAME}_${_state}}" CACHE INTERNAL "Stored state for ${_name}." FORCE)
list (REMOVE_AT _args 0)
list (GET _args 0 _state)
endwhile (_state AND NOT _state STREQUAL "DEPENDENTS")
endif (_cmd STREQUAL "STATES")
set (_stored ${_NAME}_CURRENT)
if (NOT ${_stored})
set (${_stored} "YES" CACHE BOOL "Is the configuration for ${_name} current? Set to \"NO\" to reconfigure." FORCE)
set (_states_current "NO")
endif (NOT ${_stored})
set (${_current} ${_states_current})
if (NOT ${_current} AND PACKAGE_MULTIPASS_${_name}_CALLED)
message (STATUS "Clearing ${_name} dependent variables")
# Clear all the dependent variables so that the module can reset them
list (GET _args 0 _cmd)
if (_cmd STREQUAL "DEPENDENTS")
list (REMOVE_AT _args 0)
foreach (dep ${_args})
set (${_NAME}_${dep} "NOTFOUND" CACHE INTERNAL "Cleared" FORCE)
endforeach (dep)
endif (_cmd STREQUAL "DEPENDENTS")
set (${_NAME}_FOUND "NOTFOUND" CACHE INTERNAL "Cleared" FORCE)
endif ()
set (PACKAGE_MULTIPASS_${name}_CALLED YES CACHE INTERNAL "Private" FORCE)
endmacro (FIND_PACKAGE_MULTIPASS)
macro (MULTIPASS_SOURCE_RUNS includes libraries source runs language)
include (Check${language}SourceRuns)
# This is a ridiculous hack. CHECK_${language}_SOURCE_* thinks that if the
# *name* of the return variable doesn't change, then the test does
# not need to be re-run. We keep an internal count which we
# increment to guarantee that every test name is unique. If we've
# gotten here, then the configuration has changed enough that the
# test *needs* to be rerun.
if (NOT MULTIPASS_TEST_COUNT)
set (MULTIPASS_TEST_COUNT 00)
endif (NOT MULTIPASS_TEST_COUNT)
math (EXPR _tmp "${MULTIPASS_TEST_COUNT} + 1") # Why can't I add to a cache variable?
set (MULTIPASS_TEST_COUNT ${_tmp} CACHE INTERNAL "Unique test ID")
set (testname MULTIPASS_TEST_${MULTIPASS_TEST_COUNT}_${runs})
set (CMAKE_REQUIRED_INCLUDES ${includes})
set (CMAKE_REQUIRED_LIBRARIES ${libraries})
if(${language} STREQUAL "C")
check_c_source_runs ("${source}" ${testname})
elseif(${language} STREQUAL "CXX")
check_cxx_source_runs ("${source}" ${testname})
endif()
set (${runs} "${${testname}}")
endmacro (MULTIPASS_SOURCE_RUNS)
macro (MULTIPASS_C_SOURCE_RUNS includes libraries source runs)
multipass_source_runs("${includes}" "${libraries}" "${source}" ${runs} "C")
endmacro (MULTIPASS_C_SOURCE_RUNS)
# ResolveCompilerPaths - this module defines two macros
#
# RESOLVE_LIBRARIES (XXX_LIBRARIES LINK_LINE)
# This macro is intended to be used by FindXXX.cmake modules.
# It parses a compiler link line and resolves all libraries
# (-lfoo) using the library path contexts (-L/path) in scope.
# The result in XXX_LIBRARIES is the list of fully resolved libs.
# Example:
#
# RESOLVE_LIBRARIES (FOO_LIBRARIES "-L/A -la -L/B -lb -lc -ld")
#
# will be resolved to
#
# FOO_LIBRARIES:STRING="/A/liba.so;/B/libb.so;/A/libc.so;/usr/lib/libd.so"
#
# if the filesystem looks like
#
# /A: liba.so libc.so
# /B: liba.so libb.so
# /usr/lib: liba.so libb.so libc.so libd.so
#
# and /usr/lib is a system directory.
#
# Note: If RESOLVE_LIBRARIES() resolves a link line differently from
# the native linker, there is a bug in this macro (please report it).
#
# RESOLVE_INCLUDES (XXX_INCLUDES INCLUDE_LINE)
# This macro is intended to be used by FindXXX.cmake modules.
# It parses a compile line and resolves all includes
# (-I/path/to/include) to a list of directories. Other flags are ignored.
# Example:
#
# RESOLVE_INCLUDES (FOO_INCLUDES "-I/A -DBAR='\"irrelevant -I/string here\"' -I/B")
#
# will be resolved to
#
# FOO_INCLUDES:STRING="/A;/B"
#
# assuming both directories exist.
# Note: as currently implemented, the -I/string will be picked up mistakenly (cry, cry)
include (CorrectWindowsPaths)
macro (RESOLVE_LIBRARIES LIBS LINK_LINE)
string (REGEX MATCHALL "((-L|-l|-Wl)([^\" ]+|\"[^\"]+\")|[^\" ]+\\.(a|so|dll|lib))" _all_tokens "${LINK_LINE}")
set (_libs_found "")
set (_directory_list "")
foreach (token ${_all_tokens})
if (token MATCHES "-L([^\" ]+|\"[^\"]+\")")
# If it's a library path, add it to the list
string (REGEX REPLACE "^-L" "" token ${token})
string (REGEX REPLACE "//" "/" token ${token})
convert_cygwin_path(token)
list (APPEND _directory_list ${token})
elseif (token MATCHES "^(-l([^\" ]+|\"[^\"]+\")|[^\" ]+\\.(a|so|dll|lib))")
# It's a library, resolve the path by looking in the list and then (by default) in system directories
if (WIN32) #windows expects "libfoo", linux expects "foo"
string (REGEX REPLACE "^-l" "lib" token ${token})
else (WIN32)
string (REGEX REPLACE "^-l" "" token ${token})
endif (WIN32)
set (_root "")
if (token MATCHES "^/") # We have an absolute path
#separate into a path and a library name:
string (REGEX MATCH "[^/]*\\.(a|so|dll|lib)$" libname ${token})
string (REGEX MATCH ".*[^${libname}$]" libpath ${token})
convert_cygwin_path(libpath)
set (_directory_list ${_directory_list} ${libpath})
set (token ${libname})
endif (token MATCHES "^/")
set (_lib "NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
find_library (_lib ${token} HINTS ${_directory_list} ${_root})
if (_lib)
string (REPLACE "//" "/" _lib ${_lib})
list (APPEND _libs_found ${_lib})
else (_lib)
message (STATUS "Unable to find library ${token}")
endif (_lib)
endif (token MATCHES "-L([^\" ]+|\"[^\"]+\")")
endforeach (token)
set (_lib "NOTFOUND" CACHE INTERNAL "Scratch variable" FORCE)
# only the LAST occurence of each library is required since there should be no circular dependencies
if (_libs_found)
list (REVERSE _libs_found)
list (REMOVE_DUPLICATES _libs_found)
list (REVERSE _libs_found)
endif (_libs_found)
set (${LIBS} "${_libs_found}")
endmacro (RESOLVE_LIBRARIES)
macro (RESOLVE_INCLUDES INCS COMPILE_LINE)
string (REGEX MATCHALL "-I([^\" ]+|\"[^\"]+\")" _all_tokens "${COMPILE_LINE}")
set (_incs_found "")
foreach (token ${_all_tokens})
string (REGEX REPLACE "^-I" "" token ${token})
string (REGEX REPLACE "//" "/" token ${token})
convert_cygwin_path(token)
if (EXISTS ${token})
list (APPEND _incs_found ${token})
else (EXISTS ${token})
message (STATUS "Include directory ${token} does not exist")
endif (EXISTS ${token})
endforeach (token)
list (REMOVE_DUPLICATES _incs_found)
set (${INCS} "${_incs_found}")
endmacro (RESOLVE_INCLUDES)
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