WL#5161, implement Mats' suggeston to move platform specifics into own files

under cmake/os. This patch does it for Linux

3 files changed, 50 insertions, 2 deletions

diff --git a/cmake/Makefile.am b/cmake/Makefile.am
index 855af2e982f..95c88ebd8e2 100644
--- a/cmake/Makefile.am
+++ b/cmake/Makefile.am
@@ -24,4 +24,5 @@ EXTRA_DIST = \
 	mysql_add_executable.cmake  \
 	install_layout.cmake \
 	build_configurations/mysql_release.cmake \
-	os/Windows.cmake
+	os/Windows.cmake \ 
+	os/Linux.cmake
diff --git a/cmake/os/Linux.cmake b/cmake/os/Linux.cmake
new file mode 100644
index 00000000000..946e020d6f4
--- /dev/null
+++ b/cmake/os/Linux.cmake
@@ -0,0 +1,47 @@
+
+# Copyright (C) 2010 Sun Microsystems, Inc
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA 
+
+# This file includes Linux specific options and quirks, related to system checks
+
+INCLUDE(CheckSymbolExists)
+
+# Something that needs to be set on legacy reasons
+SET(TARGET_OS_LINUX 1)
+SET(HAVE_NPTL 1)
+SET(_GNU_SOURCE 1)
+
+# Fix CMake (< 2.8) flags. -rdynamic exports too many symbols.
+FOREACH(LANG C CXX)
+  STRING(REPLACE "-rdynamic" "" 
+  CMAKE_SHARED_LIBRARY_LINK_${LANG}_FLAGS
+  ${CMAKE_SHARED_LIBRARY_LINK_${LANG}_FLAGS}  
+  )
+ENDFOREACH()
+
+# Ensure we have clean build for shared libraries
+# without unresolved symbols
+SET(LINK_FLAG_NO_UNDEFINED "--Wl,--no-undefined")
+
+# 64 bit file offset support flag
+SET(_FILE_OFFSET_BITS 64)
+
+# Linux specific HUGETLB /large page support
+CHECK_SYMBOL_EXISTS(SHM_HUGETLB sys/shm.h  HAVE_DECL_SHM_HUGETLB)
+IF(HAVE_DECL_SHM_HUGETLB)
+  SET(HAVE_LARGE_PAGES 1)
+  SET(HUGETLB_USE_PROC_MEMINFO 1)
+  SET(HAVE_LARGE_PAGE_OPTION 1)
+ENDIF()
diff --git a/cmake/os/Windows.cmake b/cmake/os/Windows.cmake
index 8a5ad4359d5..42917d0893d 100644
--- a/cmake/os/Windows.cmake
+++ b/cmake/os/Windows.cmake
@@ -1,4 +1,4 @@
-# Copyright (C) 2009 Sun Microsystems, Inc
+# Copyright (C) 2010 Sun Microsystems, Inc
 # 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by