Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/cmake/FindMPFR.cmake b/cmake/FindMPFR.cmake
new file mode 100644
index 0000000..aa4c2cd
--- /dev/null
+++ b/cmake/FindMPFR.cmake
@@ -0,0 +1,83 @@
+# Try to find the MPFR library
+# See http://www.mpfr.org/
+#
+# This module supports requiring a minimum version, e.g. you can do
+# find_package(MPFR 2.3.0)
+# to require version 2.3.0 to newer of MPFR.
+#
+# Once done this will define
+#
+# MPFR_FOUND - system has MPFR lib with correct version
+# MPFR_INCLUDES - the MPFR include directory
+# MPFR_LIBRARIES - the MPFR library
+# MPFR_VERSION - MPFR version
+
+# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
+# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
+# Copyright (c) 2010 Jitse Niesen, <jitse@maths.leeds.ac.uk>
+# Redistribution and use is allowed according to the terms of the BSD license.
+
+# Set MPFR_INCLUDES
+
+find_path(MPFR_INCLUDES
+ NAMES
+ mpfr.h
+ PATHS
+ $ENV{GMPDIR}
+ ${INCLUDE_INSTALL_DIR}
+)
+
+# Set MPFR_FIND_VERSION to 1.0.0 if no minimum version is specified
+
+if(NOT MPFR_FIND_VERSION)
+ if(NOT MPFR_FIND_VERSION_MAJOR)
+ set(MPFR_FIND_VERSION_MAJOR 1)
+ endif(NOT MPFR_FIND_VERSION_MAJOR)
+ if(NOT MPFR_FIND_VERSION_MINOR)
+ set(MPFR_FIND_VERSION_MINOR 0)
+ endif(NOT MPFR_FIND_VERSION_MINOR)
+ if(NOT MPFR_FIND_VERSION_PATCH)
+ set(MPFR_FIND_VERSION_PATCH 0)
+ endif(NOT MPFR_FIND_VERSION_PATCH)
+
+ set(MPFR_FIND_VERSION "${MPFR_FIND_VERSION_MAJOR}.${MPFR_FIND_VERSION_MINOR}.${MPFR_FIND_VERSION_PATCH}")
+endif(NOT MPFR_FIND_VERSION)
+
+
+if(MPFR_INCLUDES)
+
+ # Set MPFR_VERSION
+
+ file(READ "${MPFR_INCLUDES}/mpfr.h" _mpfr_version_header)
+
+ string(REGEX MATCH "define[ \t]+MPFR_VERSION_MAJOR[ \t]+([0-9]+)" _mpfr_major_version_match "${_mpfr_version_header}")
+ set(MPFR_MAJOR_VERSION "${CMAKE_MATCH_1}")
+ string(REGEX MATCH "define[ \t]+MPFR_VERSION_MINOR[ \t]+([0-9]+)" _mpfr_minor_version_match "${_mpfr_version_header}")
+ set(MPFR_MINOR_VERSION "${CMAKE_MATCH_1}")
+ string(REGEX MATCH "define[ \t]+MPFR_VERSION_PATCHLEVEL[ \t]+([0-9]+)" _mpfr_patchlevel_version_match "${_mpfr_version_header}")
+ set(MPFR_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}")
+
+ set(MPFR_VERSION ${MPFR_MAJOR_VERSION}.${MPFR_MINOR_VERSION}.${MPFR_PATCHLEVEL_VERSION})
+
+ # Check whether found version exceeds minimum version
+
+ if(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
+ set(MPFR_VERSION_OK FALSE)
+ message(STATUS "MPFR version ${MPFR_VERSION} found in ${MPFR_INCLUDES}, "
+ "but at least version ${MPFR_FIND_VERSION} is required")
+ else(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
+ set(MPFR_VERSION_OK TRUE)
+ endif(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
+
+endif(MPFR_INCLUDES)
+
+# Set MPFR_LIBRARIES
+
+find_library(MPFR_LIBRARIES mpfr PATHS $ENV{GMPDIR} ${LIB_INSTALL_DIR})
+
+# Epilogue
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(MPFR DEFAULT_MSG
+ MPFR_INCLUDES MPFR_LIBRARIES MPFR_VERSION_OK)
+mark_as_advanced(MPFR_INCLUDES MPFR_LIBRARIES)