2 #=============================================================================
3 # Copyright 2010 Kitware, Inc.
4 # Copyright 2010 Todd Gamblin <tgamblin@llnl.gov>
5 # Copyright 2012 Julien Bigot <julien.bigot@cea.fr>
7 # Distributed under the OSI-approved BSD License (the "License");
8 # see accompanying file Copyright.txt for details.
10 # This software is distributed WITHOUT ANY WARRANTY; without even the
11 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 # See the License for more information.
13 #=============================================================================
14 # (To distribute this file outside of CMake, substitute the full
15 # License text for the above reference.)
18 # BlueGeneQ base platform file.
20 # NOTE: Do not set your platform to "BlueGeneQ-base". This file is included
21 # by the real platform files. Use one of these two platforms instead:
23 # BlueGeneQ-dynamic For dynamically linked builds
24 # BlueGeneQ-static For statically linked builds
26 # This platform file tries its best to adhere to the behavior of the MPI
27 # compiler wrappers included with the latest BG/Q drivers.
32 # For BG/Q builds, we're cross compiling, but we don't want to re-root things
33 # (e.g. with CMAKE_FIND_ROOT_PATH) because users may have libraries anywhere on
34 # the shared filesystems, and this may lie outside the root. Instead, we set the
35 # system directories so that the various system BG/Q CNK library locations are
36 # searched first. This is not the clearest thing in the world, given IBM's driver
37 # layout, but this should cover all the standard ones.
39 set(CMAKE_SYSTEM_LIBRARY_PATH
40 /bgsys/drivers/ppcfloor/comm/xl/lib # default comm layer (used by mpi compiler wrappers)
41 /bgsys/drivers/ppcfloor/spi/lib/ # other low-level stuff
42 /bgsys/drivers/ppcfloor/gnu-linux/powerpc64-bgq-linux/lib # CNK Linux image -- standard runtime libs, pthread, etc.
46 # This adds directories that find commands should specifically ignore for cross compiles.
47 # Most of these directories are the includeand lib directories for the frontend on BG/Q systems.
48 # Not ignoring these can cause things like FindX11 to find a frontend PPC version mistakenly.
49 # We use this on BG instead of re-rooting because backend libraries are typically strewn about
50 # the filesystem, and we can't re-root ALL backend libraries to a single place.
52 set(CMAKE_SYSTEM_IGNORE_PATH
54 /usr/lib /usr/lib64 /usr/include
55 /usr/local/lib /usr/local/lib64 /usr/local/include
56 /usr/X11/lib /usr/X11/lib64 /usr/X11/include
57 /usr/lib/X11 /usr/lib64/X11 /usr/include/X11
58 /usr/X11R6/lib /usr/X11R6/lib64 /usr/X11R6/include
59 /usr/X11R7/lib /usr/X11R7/lib64 /usr/X11R7/include
63 # Indicate that this is a unix-like system
68 # Library prefixes, suffixes, extra libs.
70 set(CMAKE_LINK_LIBRARY_SUFFIX "")
71 set(CMAKE_STATIC_LIBRARY_PREFIX "lib") # lib
72 set(CMAKE_STATIC_LIBRARY_SUFFIX ".a") # .a
74 set(CMAKE_SHARED_LIBRARY_PREFIX "lib") # lib
75 set(CMAKE_SHARED_LIBRARY_SUFFIX ".so") # .so
76 set(CMAKE_EXECUTABLE_SUFFIX "") # .exe
77 set(CMAKE_DL_LIBS "dl")
80 # This macro needs to be called for dynamic library support. Unfortunately on BG/Q,
81 # We can't support both static and dynamic links in the same platform file. The
82 # dynamic link platform file needs to call this explicitly to set up dynamic linking.
84 macro(__BlueGeneQ_set_dynamic_flags compiler_id lang)
85 if (${compiler_id} STREQUAL XL)
86 # Flags for XL compilers if we explicitly detected XL
87 set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-qpic")
88 set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-qmkshrobj -qnostaticlink")
89 set(BG/Q_${lang}_DYNAMIC_EXE_FLAGS "-qnostaticlink -qnostaticlink=libgcc")
91 # Assume flags for GNU compilers (if the ID is GNU *or* anything else).
92 set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
93 set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
94 set(BG/Q_${lang}_DYNAMIC_EXE_FLAGS "-dynamic")
97 # Both toolchains use the GNU linker on BG/Q, so these options are shared.
98 set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG "-Wl,-rpath,")
99 set(CMAKE_SHARED_LIBRARY_RPATH_LINK_${lang}_FLAG "-Wl,-rpath-link,")
100 set(CMAKE_SHARED_LIBRARY_SONAME_${lang}_FLAG "-Wl,-soname,")
101 set(CMAKE_EXE_EXPORTS_${lang}_FLAG "-Wl,--export-dynamic")
102 set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "") # +s, flag for exe link to use shared lib
103 set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG_SEP ":") # : or empty
105 set(BG/Q_${lang}_DEFAULT_EXE_FLAGS
106 "<FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
107 set(CMAKE_${lang}_LINK_EXECUTABLE
108 "<CMAKE_${lang}_COMPILER> ${BG/Q_${lang}_DYNAMIC_EXE_FLAGS} ${BG/Q_${lang}_DEFAULT_EXE_FLAGS}")
112 # This macro needs to be called for static builds. Right now it just adds -Wl,-relax
115 macro(__BlueGeneQ_set_static_flags compiler_id lang)
116 set(BG/Q_${lang}_DEFAULT_EXE_FLAGS
117 "<FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
118 set(CMAKE_${lang}_LINK_EXECUTABLE
119 "<CMAKE_${lang}_COMPILER> ${BG/Q_${lang}_DEFAULT_EXE_FLAGS}")