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authorChuck Atkins <chuck.atkins@kitware.com>2014-11-04 16:01:56 (GMT)
committerBrad King <brad.king@kitware.com>2014-11-10 15:26:30 (GMT)
commit04f442f755fbfb317f6790e36686e05c4c906ba0 (patch)
tree6789e60fb2ef802c6bf7df5a706d2dc9c3eb2da9 /CompileFlags.cmake
parent0c3ddf8b652311ec2a9447a9e6303691841628b4 (diff)
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Workaround for short jump tables on PA-RISC.
The PA-RISC architecture requires special options for GCC to prevent linker errors when libraries reach a certain size and / or complexity. See http://mraw.org/blog/2007/10/10/Linking_on_hppa and gcc documentation on -mlong-calls.
Diffstat (limited to 'CompileFlags.cmake')
-rw-r--r--CompileFlags.cmake16
1 files changed, 10 insertions, 6 deletions
diff --git a/CompileFlags.cmake b/CompileFlags.cmake
index a4a4a78..7e9fb16 100644
--- a/CompileFlags.cmake
+++ b/CompileFlags.cmake
@@ -65,6 +65,16 @@ if(CMAKE_SYSTEM_NAME MATCHES "HP-UX" AND CMAKE_CXX_COMPILER_ID MATCHES "HP")
endif()
endif()
+# Workaround for short jump tables on PA-RISC
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^parisc")
+ if(CMAKE_COMPILER_IS_GNUC)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mlong-calls")
+ endif()
+ if(CMAKE_COMPILER_IS_GNUCXX)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mlong-calls")
+ endif()
+endif()
+
# use the ansi CXX compile flag for building cmake
if (CMAKE_ANSI_CXXFLAGS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_ANSI_CXXFLAGS}")
@@ -74,10 +84,4 @@ if (CMAKE_ANSI_CFLAGS)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_ANSI_CFLAGS}")
endif ()
-# avoid binutils problem with large binaries, e.g. when building CMake in debug mode
-# See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50230
-if (CMAKE_SYSTEM_NAME STREQUAL Linux AND CMAKE_SYSTEM_PROCESSOR STREQUAL parisc)
- set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--unique=.text._*")
-endif ()
-
include (${CMAKE_ROOT}/Modules/CMakeBackwardCompatibilityCXX.cmake)