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Add platform variables for position independent code flags 

Store in new platform variables

  CMAKE_${lang}_COMPILE_OPTIONS_PIC
  CMAKE_${lang}_COMPILE_OPTIONS_PIE

flags for position independent code generation.

In almost all cases, this means duplication of the
CMAKE_SHARED_LIBRARY_${lang}_FLAGS for the _PIC case and using the
assumed pie equivalent for the _PIE case.  Note that the GNU compiler
has supported -fPIE since 3.4 and that there is no -fPIC on GNU for
Windows or Cygwin.

There is a possibility that the _PIE variables are not correct.
However, as there is no backwards compatibility to be concerned about
(as the POSITION_INDEPENDENT_CODE property is not used anywhere yet),
the current state suffices.
This commit is contained in:
Stephen Kelly 2012-05-05 21:11:35 +02:00 committed by Brad King
parent 1ccbfdebb9
commit 31d7a0f2e3
25 changed files with 80 additions and 8 deletions
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8
Modules/CMakeCXXInformation.cmake
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@ -100,6 +100,14 @@ IF(NOT CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS)
SET(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS})
ENDIF(NOT CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS)
IF(NOT CMAKE_CXX_COMPILE_OPTIONS_PIC)
SET(CMAKE_CXX_COMPILE_OPTIONS_PIC ${CMAKE_C_COMPILE_OPTIONS_PIC})
ENDIF(NOT CMAKE_CXX_COMPILE_OPTIONS_PIC)
IF(NOT CMAKE_CXX_COMPILE_OPTIONS_PIE)
SET(CMAKE_CXX_COMPILE_OPTIONS_PIE ${CMAKE_C_COMPILE_OPTIONS_PIE})
ENDIF(NOT CMAKE_CXX_COMPILE_OPTIONS_PIE)
IF(NOT CMAKE_SHARED_LIBRARY_CXX_FLAGS)
SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
ENDIF(NOT CMAKE_SHARED_LIBRARY_CXX_FLAGS)

8
Modules/CMakeFortranInformation.cmake
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@ -74,6 +74,14 @@ ENDIF()
# catch any modules
SET(CMAKE_NEEDS_REQUIRES_STEP_Fortran_FLAG 1)
IF(NOT CMAKE_Fortran_COMPILE_OPTIONS_PIC)
SET(CMAKE_Fortran_COMPILE_OPTIONS_PIC ${CMAKE_C_COMPILE_OPTIONS_PIC})
ENDIF(NOT CMAKE_Fortran_COMPILE_OPTIONS_PIC)
IF(NOT CMAKE_Fortran_COMPILE_OPTIONS_PIE)
SET(CMAKE_Fortran_COMPILE_OPTIONS_PIE ${CMAKE_C_COMPILE_OPTIONS_PIE})
ENDIF(NOT CMAKE_Fortran_COMPILE_OPTIONS_PIE)
# Create a set of shared library variable specific to Fortran
# For 90% of the systems, these are the same flags as the C versions
# so if these are not set just copy the flags from the c version

4
Modules/Compiler/GNU.cmake
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@ -21,6 +21,10 @@ set(__COMPILER_GNU 1)
macro(__compiler_gnu lang)
# Feature flags.
set(CMAKE_${lang}_VERBOSE_FLAG "-v")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4)
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
endif()
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")

2
Modules/Compiler/SCO.cmake
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@ -20,6 +20,8 @@ set(__COMPILER_SCO 1)
macro(__compiler_sco lang)
# Feature flags.
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC -Kpic)
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE -Kpie)
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-Kpic -belf")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-belf -Wl,-Bexport")
endmacro()

2
Modules/Compiler/SunPro-C.cmake
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@ -1,5 +1,7 @@
SET(CMAKE_C_VERBOSE_FLAG "-#")
SET(CMAKE_C_COMPILE_OPTIONS_PIC -KPIC)
SET(CMAKE_C_COMPILE_OPTIONS_PIE -KPIE)
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-KPIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-G")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-R")

2
Modules/Compiler/SunPro-CXX.cmake
View File

@ -1,5 +1,7 @@
SET(CMAKE_CXX_VERBOSE_FLAG "-v")
SET(CMAKE_CXX_COMPILE_OPTIONS_PIC -KPIC)
SET(CMAKE_CXX_COMPILE_OPTIONS_PIE -KPIE)
SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-KPIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "-G")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG "-R")

2
Modules/Platform/BeOS.cmake
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@ -1,6 +1,8 @@
SET(BEOS 1)
SET(CMAKE_DL_LIBS root be)
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-nostart")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")

4
Modules/Platform/BlueGeneP-base.cmake
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@ -85,11 +85,15 @@ set(CMAKE_DL_LIBS "dl")
macro(__BlueGeneP_set_dynamic_flags compiler_id lang)
if (${compiler_id} STREQUAL XL)
# Flags for XL compilers if we explicitly detected XL
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-qpic")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-qpie")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-qpic")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-qmkshrobj -qnostaticlink")
set(BGP_${lang}_DYNAMIC_EXE_FLAGS "-qnostaticlink -qnostaticlink=libgcc")
else()
# Assume flags for GNU compilers (if the ID is GNU *or* anything else).
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
set(BGP_${lang}_DYNAMIC_EXE_FLAGS "-dynamic")

5
Modules/Platform/CYGWIN-GNU.cmake
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@ -35,7 +35,10 @@ macro(__cygwin_compiler_gnu lang)
set(CMAKE_${lang}_LINK_EXECUTABLE
"<CMAKE_${lang}_COMPILER> <FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> ${CMAKE_GNULD_IMAGE_VERSION} <LINK_LIBRARIES>")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "") # No -fPIC on cygwin
# No -fPIC on cygwin
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "")
# Initialize C link type selection flags. These flags are used when
# building a shared library, shared module, or executable that links

2
Modules/Platform/FreeBSD.cmake
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@ -1,5 +1,7 @@
IF(EXISTS /usr/include/dlfcn.h)
SET(CMAKE_DL_LIBS "")
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC") # -pic
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared") # -shared
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "") # +s, flag for exe link to use shared lib

1
Modules/Platform/HP-UX-HP.cmake
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@ -19,6 +19,7 @@ endif()
set(__HPUX_COMPILER_HP 1)
macro(__hpux_compiler_hp lang)
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "+Z")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "+Z")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-Wl,-E,+nodefaultrpath -b -L/usr/lib")
set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-Wl,+s,-E,+nodefaultrpath")

2
Modules/Platform/Haiku.cmake
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@ -1,6 +1,8 @@
SET(BEOS 1)
SET(CMAKE_DL_LIBS root be)
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-nostart")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")

2
Modules/Platform/Linux-Intel.cmake
View File

@ -31,6 +31,8 @@ if(NOT XIAR)
endif(NOT XIAR)
macro(__linux_compiler_intel lang)
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")

2
Modules/Platform/Linux-PGI.cmake
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@ -20,6 +20,8 @@ set(__LINUX_COMPILER_PGI 1)
macro(__linux_compiler_pgi lang)
# Shared library compile and link flags.
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
endmacro()

2
Modules/Platform/Linux-PathScale.cmake
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@ -20,6 +20,8 @@ set(__LINUX_COMPILER_PATHSCALE 1)
macro(__linux_compiler_pathscale lang)
# Shared library compile and link flags.
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
endmacro()

4
Modules/Platform/MP-RAS.cmake
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@ -1,6 +1,10 @@
IF(CMAKE_SYSTEM MATCHES "MP-RAS-02*.")
SET(CMAKE_C_COMPILE_OPTIONS_PIC -K PIC)
SET(CMAKE_C_COMPILE_OPTIONS_PIE -K PIE)
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-K PIC")
ELSE(CMAKE_SYSTEM MATCHES "MP-RAS-02*.")
SET(CMAKE_C_COMPILE_OPTIONS_PIC -K PIC)
SET(CMAKE_C_COMPILE_OPTIONS_PIE -K PIE)
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-K PIC")
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-Wl,-Bexport")
ENDIF(CMAKE_SYSTEM MATCHES "MP-RAS-02*.")

2
Modules/Platform/NetBSD.cmake
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@ -1,5 +1,7 @@
IF(EXISTS /usr/include/dlfcn.h)
SET(CMAKE_DL_LIBS "")
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC") # -pic
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared") # -shared
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "") # +s, flag for exe link to use shared lib

2
Modules/Platform/OSF1.cmake
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@ -4,6 +4,8 @@ IF(CMAKE_SYSTEM MATCHES "OSF1-1.[012]")
ENDIF(CMAKE_SYSTEM MATCHES "OSF1-1.[012]")
IF(CMAKE_SYSTEM MATCHES "OSF1-1.*")
# OSF/1 1.3 from OSF using ELF, and derivatives, including AD2
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-fpic")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-fpie")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fpic") # -pic
SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-fpic") # -pic
ENDIF(CMAKE_SYSTEM MATCHES "OSF1-1.*")

2
Modules/Platform/SINIX.cmake
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@ -1,2 +1,4 @@
SET(CMAKE_C_COMPILE_OPTIONS_PIC -K PIC)
SET(CMAKE_C_COMPILE_OPTIONS_PIE "")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-K PIC")
INCLUDE(Platform/UnixPaths)

2
Modules/Platform/SunOS.cmake
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@ -1,4 +1,6 @@
IF(CMAKE_SYSTEM MATCHES "SunOS-4.*")
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-PIC")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-PIE")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-PIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared -Wl,-r")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-R")

2
Modules/Platform/UNIX_SV.cmake
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@ -1,3 +1,5 @@
SET(CMAKE_C_COMPILE_OPTIONS_PIC -K PIC)
SET(CMAKE_C_COMPILE_OPTIONS_PIE "")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-K PIC")
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-Wl,-Bexport")
INCLUDE(Platform/UnixPaths)

2
Modules/Platform/UnixWare.cmake
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@ -1,3 +1,5 @@
SET(CMAKE_C_COMPILE_OPTIONS_PIC -K PIC)
SET(CMAKE_C_COMPILE_OPTIONS_PIE "")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-K PIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-Wl,-Bexport")
INCLUDE(Platform/UnixPaths)

6
Modules/Platform/Windows-GNU.cmake
View File

@ -77,7 +77,11 @@ macro(__windows_compiler_gnu lang)
endforeach(type)
endif()
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "") # No -fPIC on Windows
# No -fPIC on Windows
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "")
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "")
set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_OBJECTS ${__WINDOWS_GNU_LD_RESPONSE})
set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_INCLUDES 1)

2
Modules/Platform/syllable.cmake
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@ -10,6 +10,8 @@
SET(CMAKE_DL_LIBS "dl")
SET(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC")
SET(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC") # -pic
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared") # -shared
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "") # +s, flag for exe link to use shared lib

4
Tests/SystemInformation/SystemInformation.in
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@ -30,6 +30,8 @@ CMAKE_SHARED_LIBRARY_RUNTIME_FLAG == "${CMAKE_SHARED_LIBRARY_RUNTIME_FLAG}"
CMAKE_SHARED_LIBRARY_RUNTIME_FLAG_SEP == "${CMAKE_SHARED_LIBRARY_RUNTIME_FLAG_SEP}"
CMAKE_SHARED_LIBRARY_LINK_STATIC_C_FLAGS == "${CMAKE_SHARED_LIBRARY_LINK_STATIC_C_FLAGS}"
CMAKE_SHARED_LIBRARY_LINK_DYNAMIC_C_FLAGS == "${CMAKE_SHARED_LIBRARY_LINK_DYNAMIC_C_FLAGS}"
CMAKE_C_COMPILE_OPTIONS_PIC == "${CMAKE_C_COMPILE_OPTIONS_PIC}"
CMAKE_C_COMPILE_OPTIONS_PIE == "${CMAKE_C_COMPILE_OPTIONS_PIE}"
// C shared module flags
CMAKE_SHARED_MODULE_C_FLAGS == "${CMAKE_SHARED_MODULE_C_FLAGS}"
@ -49,6 +51,8 @@ CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG == "${CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLA
CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP == "${CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP}"
CMAKE_SHARED_LIBRARY_LINK_STATIC_CXX_FLAGS == "${CMAKE_SHARED_LIBRARY_LINK_STATIC_CXX_FLAGS}"
CMAKE_SHARED_LIBRARY_LINK_DYNAMIC_CXX_FLAGS == "${CMAKE_SHARED_LIBRARY_LINK_DYNAMIC_CXX_FLAGS}"
CMAKE_CXX_COMPILE_OPTIONS_PIC == "${CMAKE_CXX_COMPILE_OPTIONS_PIC}"
CMAKE_CXX_COMPILE_OPTIONS_PIE == "${CMAKE_CXX_COMPILE_OPTIONS_PIE}"
// CXX shared module flags
CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS == "${CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS}"