X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=CMakeLists.txt;h=d7112b1a49ed7d8598be207391e7ac8c9b75ce57;hb=8556cb1c66c6548c110cc96e2c8245102cefb906;hp=e421c535b923aa8136cca2bd7751a26e5c1a9a67;hpb=016c7d6260441603d1b066b5d413ac27639c38a1;p=lyx.git

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e421c535b9..d7112b1a49 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,6 +81,18 @@ if(NOT help AND NOT HELP)
       message(FATAL_ERROR "Exiting")
     endif()
   endif()
+  # Enable LTO if supported
+  if (POLICY CMP0069)
+    cmake_policy(SET CMP0069 NEW)
+    include(CheckIPOSupported)
+    check_ipo_supported(RESULT result OUTPUT reason LANGUAGES CXX)
+    if(result)
+      message(STATUS "Setting IPO True")
+      set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
+    else()
+      message(STATUS "Not setting IPO , result = ${result}, reason = ${reason}")
+    endif()
+  endif()
 endif()
 
 if(UNIX)
@@ -271,22 +283,29 @@ if(UNIX OR MINGW)
 	    set(LYX_USE_STD_REGEX 0)
 	  endif()
 	else()
-	  execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+	  execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpfullversion OUTPUT_VARIABLE GCC_VERSION ERROR_VARIABLE _error RESULT_VARIABLE _err OUTPUT_STRIP_TRAILING_WHITESPACE)
+	  #message(STATUS "dumpfullversion: error = ${_error}, result = ${_err}")
+	  if (_err)
+	    # previous check failed, try again with _old_ parameter
+	    execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION ERROR_VARIABLE _error RESULT_VARIABLE _err OUTPUT_STRIP_TRAILING_WHITESPACE)
+	    #message(STATUS "dumpversion: error = ${_error}, result = ${_err}")
+	  endif()
 	  message(STATUS "Using GCC version ${GCC_VERSION}")
-	  if(GCC_VERSION VERSION_LESS 4.9)
-		  if(GCC_VERSION VERSION_LESS 4.6)
-			  message(FATAL_ERROR "gcc >= 4.6 is required.")
-		  endif()
-		  # <regex> in gcc is unusable in versions less than 4.9.0
-		  # see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
-		  set(LYX_USE_STD_REGEX 0)
+	  if(GCC_VERSION VERSION_LESS 4.6)
+		message(FATAL_ERROR "gcc >= 4.6 is required.")
+	  elseif(GCC_VERSION VERSION_LESS 4.9)
+		# <regex> in gcc is unusable in versions less than 4.9.0
+		# see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
+		set(LYX_USE_STD_REGEX 0)
 	  else()
-		  set(LYX_USE_STD_REGEX 1)
+		set(LYX_USE_STD_REGEX 1)
 	  endif()
 	endif()
 	set(LYX_GCC11_MODE "${CXX11_FLAG}")
 else()
-	if(MSVC_VERSION LESS 1915)
+	if(MSVC_VERSION LESS 1900)
+		# Drop support for msvc versions prior to 1900 (Visual Studio 2015)
+		message(FATAL_ERROR "Visual Studio >= 2015 is required.")
 		set(LYX_USE_STD_REGEX 0)
 	else()
 		set(LYX_USE_STD_REGEX 1)
@@ -325,6 +344,9 @@ endif()
 macro(setstripped _varname)
 	if(${ARGC} GREATER 1)
 		string(STRIP "${ARGV1}" _v)
+                if (_v MATCHES "^\\[\(.+\)\\]$")
+                  set(_v ${CMAKE_MATCH_1})
+                endif()
 		if(USE_POSIX_PACKAGING)
 			string(TOLOWER ${_v} ${_varname})
 		else()
@@ -337,9 +359,14 @@ endmacro(setstripped)
 
 foreach(_c_l ${_config_lines} )
 	if(_c_l MATCHES "^AC_INIT\\(\([^,]+\),\([^,]+\), *\\[\([^,]+\)\\] *,\(.*\)")
-		setstripped(PACKAGE_BASE ${CMAKE_MATCH_1})
-		setstripped(PACKAGE_VERSION ${CMAKE_MATCH_2})
-		setstripped(PACKAGE_BUGREPORT ${CMAKE_MATCH_3})
+                # Not using CMAKE_MATCH_ directly is needed, because
+                # its value is now changed inside macro setstripped
+                set(_PB ${CMAKE_MATCH_1})
+                set(_PV ${CMAKE_MATCH_2})
+                set(_PBU ${CMAKE_MATCH_3})
+		setstripped(PACKAGE_BASE ${_PB})
+		setstripped(PACKAGE_VERSION ${_PV})
+		setstripped(PACKAGE_BUGREPORT ${_PBU})
 		if(PACKAGE_VERSION MATCHES "^\([0-9]+\)\\.\([0-9]+\)\(\\.\([0-9]+\)\)?.*$")
 			set(LYX_MAJOR_VERSION ${CMAKE_MATCH_1})
 			set(LYX_MINOR_VERSION ${CMAKE_MATCH_2})
@@ -769,7 +796,7 @@ unset(LYX_PYTHON_EXECUTABLE CACHE)
 unset(PYTHON_VERSION_MAJOR)
 unset(PYTHON_VERSION_MINOR)
 unset(PYTHON_VERSION_STRING)
-find_package(PythonInterp 3.3 QUIET)
+find_package(PythonInterp 3.5 QUIET)
 if(NOT PYTHONINTERP_FOUND)
   unset(PYTHON_EXECUTABLE CACHE)
   find_package(PythonInterp 2.0 REQUIRED)