kolan
/
CMake
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
CMake/Modules/Platform/AIX-GNU.cmake

29 lines
1.1 KiB
CMake
Raw Normal View History

Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
2016-09-27 22:01:08 +03:00
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
Split GNU compiler information files This moves GNU compiler flags into new-style modules Compiler/GNU-<lang>.cmake Platform/<os>-GNU-<lang>.cmake We use language-independent helper modules Compiler/GNU.cmake Platform/<os>-GNU.cmake to define macros consolidating the information.
2009-12-02 17:52:00 +03:00
# This module is shared by multiple languages; use include blocker.
if(__AIX_COMPILER_GNU)
return()
endif()
set(__AIX_COMPILER_GNU 1)
AIX,HP-UX: Fix RPATH handling when CMP0065 is set to NEW The CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS setting has always been meant for flags needed to export symbols from executables for use by shared library plugins. Since commit v3.4.0-rc1~58^2~1 (CMP0065: Restrict the use of CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS, 2015-08-24) this is made explicit by using the flags only for executables with ENABLE_EXPORTS, guarded by CMP0065 for compatibility. On some platforms we were accidentally using this setting to pass other flags to the linker: * AIX: -bnoipath, -brtl * HP-UX: +s, +nodefaultrpath These flags are incorrectly dropped when CMP0065 is set to NEW. Fix this by moving the flags to more appropriate places for linking executables.
2015-12-11 13:08:24 +03:00
#
# By default, runtime linking is enabled. All shared objects specified on the command line
# will be listed, even if there are no symbols referenced, in the output file.
Honor CMAKE_*_LINKER_FLAGS[_<CONFIG>]_INIT set in toolchain files Document these variables. Change our convention for setting these variables from: set(CMAKE_EXE_LINKER_FLAGS_INIT "...") to string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " ...") so that any value previously set by a toolchain file will be used.
2016-07-13 22:06:23 +03:00
string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT " -Wl,-brtl")
string(APPEND CMAKE_MODULE_LINKER_FLAGS_INIT " -Wl,-brtl")
string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " -Wl,-brtl")
AIX,HP-UX: Fix RPATH handling when CMP0065 is set to NEW The CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS setting has always been meant for flags needed to export symbols from executables for use by shared library plugins. Since commit v3.4.0-rc1~58^2~1 (CMP0065: Restrict the use of CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS, 2015-08-24) this is made explicit by using the flags only for executables with ENABLE_EXPORTS, guarded by CMP0065 for compatibility. On some platforms we were accidentally using this setting to pass other flags to the linker: * AIX: -bnoipath, -brtl * HP-UX: +s, +nodefaultrpath These flags are incorrectly dropped when CMP0065 is set to NEW. Fix this by moving the flags to more appropriate places for linking executables.
2015-12-11 13:08:24 +03:00
Split GNU compiler information files This moves GNU compiler flags into new-style modules Compiler/GNU-<lang>.cmake Platform/<os>-GNU-<lang>.cmake We use language-independent helper modules Compiler/GNU.cmake Platform/<os>-GNU.cmake to define macros consolidating the information.
2009-12-02 17:52:00 +03:00
macro(__aix_compiler_gnu lang)
Move RPATH flags to AIX per-compiler information files Move RPATH flags out of Platform/AIX.cmake into platform-specific compiler information files Platform/AIX-XL and Platform/AIX-GNU. The flags need to be set for each compiler of each language.
2011-03-02 19:17:29 +03:00
set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG "-Wl,-blibpath:")
set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG_SEP ":")
AIX: Do not use -brtl to create shared libraries (#13997) The flag was added incorrectly by commit 9c3a6eb4 (Need -brtl when creating shared libraries, 2003-05-16). According to "man ld" the -G option implies "-brtl -bnortllib ...", -brtl implies "-brtllib", and -brtllib should only be used for executables, not shared libraries. Therefore it is incorrect and unnecessary to specify -brtl explicitly after -G. Reported-by: Kevin Burge <kcburge@gmail.com>
2013-03-11 16:51:01 +04:00
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "${CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS} -Wl,-G,-bnoipath")
AIX,HP-UX: Fix RPATH handling when CMP0065 is set to NEW The CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS setting has always been meant for flags needed to export symbols from executables for use by shared library plugins. Since commit v3.4.0-rc1~58^2~1 (CMP0065: Restrict the use of CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS, 2015-08-24) this is made explicit by using the flags only for executables with ENABLE_EXPORTS, guarded by CMP0065 for compatibility. On some platforms we were accidentally using this setting to pass other flags to the linker: * AIX: -bnoipath, -brtl * HP-UX: +s, +nodefaultrpath These flags are incorrectly dropped when CMP0065 is set to NEW. Fix this by moving the flags to more appropriate places for linking executables.
2015-12-11 13:08:24 +03:00
set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-Wl,-bexpall")
AIX-GNU: Put implicit link directories in runtime libpath (#13909) The GNU compiler front-ends on AIX invoke the linker with flags of the form "-L/path/to/gnu/runtime/lib" to tell ld where to find the language runtime libraries. They depend on the default libpath behavior documented in "man ld" to add the -L paths also to the runtime libpath so the dynamic loader can find the language runtime libraries. This differs from platforms whose linkers have distinct -rpath flags that non-system compilers can use to tell the dynamic loader where to find their language runtime libraries. Since commit 96fd5909 (Implement linking with paths to library files, 2008-01-22) CMake always passes "-Wl,-blibpath:" followed by any project-defined RPATH plus "/usr/lib:/lib" in order to explicitly set the runtime libpath and avoid getting all the project -L paths in the runtime libpath. The explicit libpath prevents the GNU compiler runtime library -L paths from being placed in the libpath and then the dynamic loader fails to find the language runtime libraries. CMake already detects the implicit link directories for each language since commit 07ea19ad (Implicit link info for C, CXX, and Fortran, 2009-07-23). Add the implicit link directories to the explicit runtime libpath for GNU compilers on AIX to fix this use case.
2013-02-14 18:58:29 +04:00
set(CMAKE_${lang}_USE_IMPLICIT_LINK_DIRECTORIES_IN_RUNTIME_PATH 1)
AIX,HP-UX: Fix RPATH handling when CMP0065 is set to NEW The CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS setting has always been meant for flags needed to export symbols from executables for use by shared library plugins. Since commit v3.4.0-rc1~58^2~1 (CMP0065: Restrict the use of CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS, 2015-08-24) this is made explicit by using the flags only for executables with ENABLE_EXPORTS, guarded by CMP0065 for compatibility. On some platforms we were accidentally using this setting to pass other flags to the linker: * AIX: -bnoipath, -brtl * HP-UX: +s, +nodefaultrpath These flags are incorrectly dropped when CMP0065 is set to NEW. Fix this by moving the flags to more appropriate places for linking executables.
2015-12-11 13:08:24 +03:00
set(CMAKE_${lang}_LINK_FLAGS "-Wl,-bnoipath")
GNU: Do not use -fvisibility on AIX or HP-UX Use of `-fvisibility=hidden` warns: warning: visibility attribute not supported in this configuration; ignored
2016-09-03 14:50:47 +03:00
unset(CMAKE_${lang}_COMPILE_OPTIONS_VISIBILITY)
Split GNU compiler information files This moves GNU compiler flags into new-style modules Compiler/GNU-<lang>.cmake Platform/<os>-GNU-<lang>.cmake We use language-independent helper modules Compiler/GNU.cmake Platform/<os>-GNU.cmake to define macros consolidating the information.
2009-12-02 17:52:00 +03:00
endmacro()