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rAKA/ResolveCompilerPaths.cmake
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ResolveCompilerPaths.cmake
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# 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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