OS X: Detect implicit link directories on modern toolchains
We detect the implicit link directories for the toolchain by adding a flag to get verbose output from the compiler front-end while linking the ABI detection binary. Newer OS X toolchains based on Clang do not add the implicit link directories with -L options to their internal invocation of "ld". Instead they use a linker that comes with the toolchain and is already configured with the proper directories. Add the "-Wl,-v" option to ask "ld" to print its implicit directories. It displays them in a block such as: Library search paths: /... Parse this block to extract the implicit link directories. While at it, remove the checks introduced by commitefaf335b(Skip implicit link information on Xcode, 2009-07-23) and commit5195a664(Skip implicit link info for multiple OS X archs, 2009-09-22). Discard the non-system link directories added by Xcode. Discard all detected implicit libraries in the multi-architecture case but keep the directories. The directories are still useful without the libraries just to suppress addition of explicit -L options for them.
This commit is contained in:
Brad King
parent
ba58d0c06f
commit
2dd67c7ea0
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@ -72,18 +72,7 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
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# Parse implicit linker information for this language, if available.
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set(implicit_dirs "")
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set(implicit_libs "")
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set(MULTI_ARCH FALSE)
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if(DEFINED CMAKE_OSX_ARCHITECTURES)
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if( "${CMAKE_OSX_ARCHITECTURES}" MATCHES ";" )
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set(MULTI_ARCH TRUE)
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endif()
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endif()
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if(CMAKE_${lang}_VERBOSE_FLAG
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# Implicit link information cannot be used explicitly for
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# multiple OS X architectures, so we skip it.
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AND NOT MULTI_ARCH
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# Skip this with Xcode for now.
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AND NOT "${CMAKE_GENERATOR}" MATCHES Xcode)
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if(CMAKE_${lang}_VERBOSE_FLAG)
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CMAKE_PARSE_IMPLICIT_LINK_INFO("${OUTPUT}" implicit_libs implicit_dirs log
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"${CMAKE_${lang}_IMPLICIT_OBJECT_REGEX}")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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@ -112,6 +101,14 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
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message(STATUS "${_desc}")
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endif()
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# Implicit link libraries cannot be used explicitly for multiple
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# OS X architectures, so we skip it.
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if(DEFINED CMAKE_OSX_ARCHITECTURES)
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if("${CMAKE_OSX_ARCHITECTURES}" MATCHES ";")
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set(implicit_libs "")
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endif()
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endif()
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set(CMAKE_${lang}_IMPLICIT_LINK_LIBRARIES "${implicit_libs}" PARENT_SCOPE)
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set(CMAKE_${lang}_IMPLICIT_LINK_DIRECTORIES "${implicit_dirs}" PARENT_SCOPE)
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@ -36,6 +36,16 @@ function(CMAKE_PARSE_IMPLICIT_LINK_INFO text lib_var dir_var log_var obj_regex)
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set(cmd)
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if("${line}" MATCHES "${linker_regex}" AND
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NOT "${line}" MATCHES "${linker_exclude_regex}")
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if(XCODE)
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# Xcode unconditionally adds a path under the project build tree and
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# on older versions it is not reported with proper quotes. Remove it.
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string(REGEX REPLACE "([][+.*()^])" "\\\\\\1" _dir_regex "${CMAKE_BINARY_DIR}")
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string(REGEX REPLACE " -[FL]${_dir_regex}/([^ ]| [^-])+( |$)" " " xline "${line}")
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if(NOT "x${xline}" STREQUAL "x${line}")
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set(log "${log} reduced line: [${line}]\n to: [${xline}]\n")
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set(line "${xline}")
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endif()
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endif()
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if(UNIX)
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separate_arguments(args UNIX_COMMAND "${line}")
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else()
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@ -97,6 +107,13 @@ function(CMAKE_PARSE_IMPLICIT_LINK_INFO text lib_var dir_var log_var obj_regex)
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endif()
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endforeach()
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# Look for library search paths reported by linker.
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if("${output_lines}" MATCHES ";Library search paths:((;\t[^;]+)+)")
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string(REPLACE ";\t" ";" implicit_dirs_match "${CMAKE_MATCH_1}")
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set(log "${log} Library search paths: [${implicit_dirs_match}]\n")
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list(APPEND implicit_dirs_tmp ${implicit_dirs_match})
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endif()
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# Cleanup list of libraries and flags.
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# We remove items that are not language-specific.
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set(implicit_libs "")
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@ -108,12 +125,18 @@ function(CMAKE_PARSE_IMPLICIT_LINK_INFO text lib_var dir_var log_var obj_regex)
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endif()
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endforeach()
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# Cleanup list of directories.
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# Cleanup list of library directories.
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set(implicit_dirs "")
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foreach(d IN LISTS implicit_dirs_tmp)
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get_filename_component(dir "${d}" ABSOLUTE)
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list(APPEND implicit_dirs "${dir}")
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set(log "${log} collapse dir [${d}] ==> [${dir}]\n")
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string(FIND "${dir}" "${CMAKE_FILES_DIRECTORY}/" pos)
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if(NOT pos LESS 0)
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set(msg ", skipping non-system directory")
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else()
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set(msg "")
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list(APPEND implicit_dirs "${dir}")
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endif()
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set(log "${log} collapse library dir [${d}] ==> [${dir}]${msg}\n")
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endforeach()
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list(REMOVE_DUPLICATES implicit_dirs)
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@ -19,6 +19,7 @@ endif()
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set(__DARWIN_COMPILER_CLANG 1)
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macro(__darwin_compiler_clang lang)
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set(CMAKE_${lang}_VERBOSE_FLAG "-v -Wl,-v") # also tell linker to print verbose output
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set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names")
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set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "-bundle -Wl,-headerpad_max_install_names")
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set(CMAKE_${lang}_SYSROOT_FLAG "-isysroot")
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@ -19,6 +19,7 @@ endif()
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set(__DARWIN_COMPILER_GNU 1)
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macro(__darwin_compiler_gnu lang)
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set(CMAKE_${lang}_VERBOSE_FLAG "-v -Wl,-v") # also tell linker to print verbose output
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# GNU does not have -shared on OS X
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set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names")
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set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "-bundle -Wl,-headerpad_max_install_names")
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@ -102,30 +102,127 @@ list(APPEND platforms linux64_test1)
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#-----------------------------------------------------------------------------
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# Mac
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# gcc -arch i686 dummy.c -v -Wl,-v
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set(mac_i686_gcc_Wlv_text " /usr/libexec/gcc/i686-apple-darwin10/4.2.1/collect2 -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.6.o -L/usr/lib/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. /var/tmp//ccnhXAGL.o -lSystem -lgcc -lSystem
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collect2 version 4.2.1 (Apple Inc. build 5646) (i686 Darwin)
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/usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.6.o -L/usr/lib/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. /var/tmp//ccSiuUhD.o -v -lSystem -lgcc -lSystem
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@(#)PROGRAM:ld PROJECT:ld64-95.2.12
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Library search paths:
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/usr/lib/i686-apple-darwin10/4.2.1
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/usr/lib/gcc/i686-apple-darwin10/4.2.1
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/usr/lib/gcc/i686-apple-darwin10/4.2.1
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/usr/lib/i686-apple-darwin10/4.2.1
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/usr/lib
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/usr/lib
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/usr/local/lib
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Framework search paths:
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/Library/Frameworks/
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/System/Library/Frameworks/")
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set(mac_i686_gcc_Wlv_libs "")
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set(mac_i686_gcc_Wlv_dirs "/usr/lib/i686-apple-darwin10/4.2.1;/usr/lib/gcc/i686-apple-darwin10/4.2.1;/usr/lib;/usr/local/lib")
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list(APPEND platforms mac_i686_gcc_Wlv)
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# gcc -arch i686 dummy.c -v
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set(mac_i686_gcc_text " /usr/libexec/gcc/i686-apple-darwin10/4.2.1/collect2 -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.6.o -L/usr/lib/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. /var/tmp//ccnhXAGL.o -lSystem -lgcc -lSystem")
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set(mac_i686_gcc_libs "")
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set(mac_i686_gcc_dirs "/usr/lib/i686-apple-darwin10/4.2.1;/usr/lib/gcc/i686-apple-darwin10/4.2.1;/usr/lib")
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list(APPEND platforms mac_i686_gcc)
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# g++ -arch i686 dummy.cxx -v -Wl,-v
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set(mac_i686_g++_Wlv_text " /usr/libexec/gcc/i686-apple-darwin10/4.2.1/collect2 -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.6.o -L/usr/lib/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. /var/tmp//ccEXXICh.o -lstdc++ -lSystem -lgcc -lSystem
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collect2 version 4.2.1 (Apple Inc. build 5646) (i686 Darwin)
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/usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.6.o -L/usr/lib/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. /var/tmp//ccWrBoVl.o -v -lstdc++ -lSystem -lgcc -lSystem
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@(#)PROGRAM:ld PROJECT:ld64-95.2.12
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Library search paths:
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/usr/lib/i686-apple-darwin10/4.2.1
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/usr/lib/gcc/i686-apple-darwin10/4.2.1
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/usr/lib/gcc/i686-apple-darwin10/4.2.1
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/usr/lib/i686-apple-darwin10/4.2.1
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/usr/lib
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/usr/lib
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/usr/local/lib
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Framework search paths:
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/Library/Frameworks/
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/System/Library/Frameworks/")
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set(mac_i686_g++_Wlv_libs "stdc++")
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set(mac_i686_g++_Wlv_dirs "/usr/lib/i686-apple-darwin10/4.2.1;/usr/lib/gcc/i686-apple-darwin10/4.2.1;/usr/lib;/usr/local/lib")
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list(APPEND platforms mac_i686_g++_Wlv)
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# g++ -arch i686 dummy.cxx -v
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set(mac_i686_g++_text " /usr/libexec/gcc/i686-apple-darwin10/4.2.1/collect2 -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.6.o -L/usr/lib/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1 -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. /var/tmp//ccEXXICh.o -lstdc++ -lSystem -lgcc -lSystem")
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set(mac_i686_g++_libs "stdc++")
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set(mac_i686_g++_dirs "/usr/lib/i686-apple-darwin10/4.2.1;/usr/lib/gcc/i686-apple-darwin10/4.2.1;/usr/lib")
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list(APPEND platforms mac_i686_g++)
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# gfortran dummy.f -v -Wl,-v
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set(mac_i686_gfortran_Wlv_text " /usr/local/libexec/gcc/i386-apple-darwin9.7.0/4.4.1/collect2 -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/local/lib/gcc/i386-apple-darwin9.7.0/4.4.1 -L/usr/local/lib/gcc/i386-apple-darwin9.7.0/4.4.1/../../.. /var/tmp//cc9zXNax.o -v -lgfortranbegin -lgfortran -lgcc_s.10.5 -lgcc -lSystem
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collect2 version 4.4.1 20090623 (prerelease) (i686 Darwin)
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/usr/bin/ld -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/local/lib/gcc/i386-apple-darwin9.7.0/4.4.1 -L/usr/local/lib/gcc/i386-apple-darwin9.7.0/4.4.1/../../.. /var/tmp//cc9zXNax.o -v -lgfortranbegin -lgfortran -lgcc_s.10.5 -lgcc -lSystem
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@(#)PROGRAM:ld PROJECT:ld64-95.2.12
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Library search paths:
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/usr/local/lib/gcc/i386-apple-darwin9.7.0/4.4.1
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/usr/local/lib
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/usr/lib
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/usr/local/lib
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Framework search paths:
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/Library/Frameworks/
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/System/Library/Frameworks/")
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set(mac_i686_gfortran_Wlv_libs "gfortranbegin;gfortran")
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set(mac_i686_gfortran_Wlv_dirs "/usr/local/lib/gcc/i386-apple-darwin9.7.0/4.4.1;/usr/local/lib;/usr/lib")
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list(APPEND platforms mac_i686_gfortran_Wlv)
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# gfortran dummy.f -v
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set(mac_i686_gfortran_text " /usr/libexec/gcc/i386-apple-darwin9.7.0/4.4.1/collect2 -dynamic -arch i386 -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/gcc/i386-apple-darwin9.7.0/4.4.1 -L/usr/lib/gcc -L/usr/lib/gcc/i386-apple-darwin9.7.0/4.4.1/../../.. /var/tmp//ccgqbX5P.o -lgfortranbegin -lgfortran -lgcc_s.10.5 -lgcc -lSystem")
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set(mac_i686_gfortran_libs "gfortranbegin;gfortran")
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set(mac_i686_gfortran_dirs "/usr/lib/gcc/i386-apple-darwin9.7.0/4.4.1;/usr/lib/gcc;/usr/lib")
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list(APPEND platforms mac_i686_gfortran)
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# gcc -arch ppc dummy.c -v -Wl,-v
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set(mac_ppc_gcc_Wlv_text " /usr/libexec/gcc/powerpc-apple-darwin10/4.2.1/collect2 -dynamic -arch ppc -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../../powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../.. /var/tmp//cclziQY4.o -v -lgcc -lSystemStubs -lSystem
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collect2 version 4.2.1 (Apple Inc. build 5646) (Darwin/PowerPC)
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/usr/libexec/gcc/powerpc-apple-darwin10/4.2.1/ld -dynamic -arch ppc -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../../powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../.. /var/tmp//cclziQY4.o -v -lgcc -lSystemStubs -lSystem
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@(#)PROGRAM:ld PROJECT:ld64-95.2.12
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Library search paths:
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/usr/lib/powerpc-apple-darwin10/4.2.1
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/usr/lib/gcc/powerpc-apple-darwin10/4.2.1
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/usr/lib/gcc/powerpc-apple-darwin10/4.2.1
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/usr/lib/powerpc-apple-darwin10/4.2.1
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/usr/lib
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/usr/lib
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/usr/local/lib
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Framework search paths:
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/Library/Frameworks/
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/System/Library/Frameworks/")
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set(mac_ppc_gcc_Wlv_libs "")
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set(mac_ppc_gcc_Wlv_dirs "/usr/lib/powerpc-apple-darwin10/4.2.1;/usr/lib/gcc/powerpc-apple-darwin10/4.2.1;/usr/lib;/usr/local/lib")
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list(APPEND platforms mac_ppc_gcc_Wlv)
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# gcc -arch ppc dummy.c -v
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set(mac_ppc_gcc_text " /usr/libexec/gcc/powerpc-apple-darwin10/4.2.1/collect2 -dynamic -arch ppc -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../../powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../.. /var/tmp//ccdcolsP.o -lgcc -lSystemStubs -lSystem")
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set(mac_ppc_gcc_libs "")
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set(mac_ppc_gcc_dirs "/usr/lib/powerpc-apple-darwin10/4.2.1;/usr/lib/gcc/powerpc-apple-darwin10/4.2.1;/usr/lib")
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list(APPEND platforms mac_ppc_gcc)
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# g++ -arch ppc dummy.cxx -v -Wl,-v
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set(mac_ppc_g++_Wlv_text " /usr/libexec/gcc/powerpc-apple-darwin10/4.2.1/collect2 -dynamic -arch ppc -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../../powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../.. /var/tmp//ccaFTkwq.o -v -lstdc++ -lgcc -lSystemStubs -lSystem
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collect2 version 4.2.1 (Apple Inc. build 5646) (Darwin/PowerPC)
|
||||
/usr/libexec/gcc/powerpc-apple-darwin10/4.2.1/ld -dynamic -arch ppc -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../../powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../.. /var/tmp//ccaFTkwq.o -v -lstdc++ -lgcc -lSystemStubs -lSystem
|
||||
@(#)PROGRAM:ld PROJECT:ld64-95.2.12
|
||||
Library search paths:
|
||||
/usr/lib/powerpc-apple-darwin10/4.2.1
|
||||
/usr/lib/gcc/powerpc-apple-darwin10/4.2.1
|
||||
/usr/lib/gcc/powerpc-apple-darwin10/4.2.1
|
||||
/usr/lib/powerpc-apple-darwin10/4.2.1
|
||||
/usr/lib
|
||||
/usr/lib
|
||||
/usr/local/lib
|
||||
Framework search paths:
|
||||
/Library/Frameworks/
|
||||
/System/Library/Frameworks/")
|
||||
set(mac_ppc_g++_Wlv_libs "stdc++")
|
||||
set(mac_ppc_g++_Wlv_dirs "/usr/lib/powerpc-apple-darwin10/4.2.1;/usr/lib/gcc/powerpc-apple-darwin10/4.2.1;/usr/lib;/usr/local/lib")
|
||||
list(APPEND platforms mac_ppc_g++_Wlv)
|
||||
|
||||
# g++ -arch ppc dummy.cxx -v
|
||||
set(mac_ppc_g++_text " /usr/libexec/gcc/powerpc-apple-darwin10/4.2.1/collect2 -dynamic -arch ppc -macosx_version_min 10.6.0 -weak_reference_mismatches non-weak -o a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../../powerpc-apple-darwin10/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/../../.. /var/tmp//ccbjB6Lj.o -lstdc++ -lgcc -lSystemStubs -lSystem")
|
||||
set(mac_ppc_g++_libs "stdc++")
|
||||
|
|
|
|||
Loading…
Reference in New Issue