Drop -rdynamic from Linux build rules

This is a GNU-specific option that should not be specified for all
compilers on Linux.  It tells the GNU compiler to pass -export-dynamic
to the linker to export symbols from executables for use by plugins.
Since we provide the ENABLE_EXPORTS target property to do the same thing
in a cross-platform way, there is no need to pass -rdynamic always.

Since the option is not useful for GNU tools and breaks other tools on
Linux we simply remove it from CMAKE_SHARED_LIBRARY_LINK_<lang>_FLAGS.
This also allows us to stop setting the variable in other Linux compiler
files just to erase the bad flag.

See issue #9985.

Modules/Compiler/SunPro-C.cmake

@@ -1,6 +1,5 @@
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-KPIC")
 SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-G")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-R")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")
 SET(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-h")

Modules/Compiler/SunPro-CXX.cmake

@@ -1,6 +1,5 @@
 SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-KPIC")
 SET(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "-G")
-SET(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG "-R")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP ":")
 SET(CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG "-h")

Modules/Compiler/SunPro-Fortran.cmake

@@ -1,6 +1,5 @@
 SET(CMAKE_SHARED_LIBRARY_Fortran_FLAGS "-KPIC")
 SET(CMAKE_SHARED_LIBRARY_CREATE_Fortran_FLAGS "-G")
-SET(CMAKE_SHARED_LIBRARY_LINK_Fortran_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_Fortran_FLAG "-R")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_Fortran_FLAG_SEP ":")
 SET(CMAKE_SHARED_LIBRARY_SONAME_Fortran_FLAG "-h")

Modules/Platform/GNU.cmake

@@ -2,7 +2,6 @@
 SET(CMAKE_DL_LIBS "dl")
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")
 SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-rdynamic")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")
 SET(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,")

Modules/Platform/Linux-PGI-C.cmake

@@ -1,5 +1,3 @@
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
-
 SET (CMAKE_C_CREATE_PREPROCESSED_SOURCE "<CMAKE_C_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
 SET (CMAKE_C_CREATE_ASSEMBLY_SOURCE "<CMAKE_C_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
 

Modules/Platform/Linux-PGI-CXX.cmake

@@ -1,4 +1,2 @@
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
-
 SET (CMAKE_CXX_CREATE_PREPROCESSED_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
 SET (CMAKE_CXX_CREATE_ASSEMBLY_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")

Modules/Platform/Linux-PGI-Fortran.cmake

@@ -1,5 +1,3 @@
-SET(CMAKE_SHARED_LIBRARY_LINK_Fortran_FLAGS "")
-
 SET(CMAKE_Fortran_MODDIR_FLAG "-module ")
 SET(CMAKE_Fortran_FLAGS_INIT "-Mpreprocess -Kieee -fpic")
 SET(CMAKE_Fortran_FLAGS_DEBUG_INIT "-g -O0 -Mbounds")

Modules/Platform/Linux-XL-C.cmake

@@ -1,3 +1,2 @@
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-qmkshrobj")

Modules/Platform/Linux-XL-CXX.cmake

@@ -1,5 +1,3 @@
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "")
-SET(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "-qmkshrobj")

Modules/Platform/Linux-XL-Fortran.cmake

@@ -1,3 +1,2 @@
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CREATE_Fortran_FLAGS "-qmkshrobj")

Modules/Platform/Linux-como.cmake

@@ -15,4 +15,3 @@ SET(CMAKE_CXX_LINK_EXECUTABLE
 
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "")
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")

Modules/Platform/Linux.cmake

@@ -2,7 +2,6 @@
 SET(CMAKE_DL_LIBS "dl")
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")        
 SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared")
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-rdynamic")  
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")
 SET(CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG "-Wl,-rpath-link,")