Add support for CMake v4

Author: cschreib

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 2.6...4.0)
 project(FAST++-superbuild C CXX)
 
 if (NOT CMAKE_BUILD_TYPE)
@@ -29,7 +29,7 @@ ExternalProject_Add(cfitsio
     SOURCE_DIR ${PROJECT_SOURCE_DIR}/external/cfitsio
     DOWNLOAD_DIR ${PROJECT_SOURCE_DIR}/external/cfitsio
     GIT_REPOSITORY https://github.com/cschreib/cfitsio.git
-    GIT_TAG 9a9fbdba78f5583795f995c0f43007c191ff1b91
+    GIT_TAG fbfbc6d4dcd4b21796b106dae14c7640b1c273da
     CMAKE_ARGS
         -DBUILD_SHARED_LIBS=OFF
         -DUSE_PTHREADS=ON
@@ -46,7 +46,7 @@ ExternalProject_Add(vif
     SOURCE_DIR ${PROJECT_SOURCE_DIR}/external/vif
     DOWNLOAD_DIR ${PROJECT_SOURCE_DIR}/external/vif
     GIT_REPOSITORY https://github.com/cschreib/vif.git
-    GIT_TAG e70e703b40e1536dce00c8598611e69fc5d45d54
+    GIT_TAG 705b13681f7f8563debf9801c9f03ac1eff1e07f
     CMAKE_ARGS
         -DNO_REFLECTION=ON
         -DNO_FFTW=ON
@@ -65,7 +65,7 @@ ExternalProject_Add(tinyexpr
     SOURCE_DIR ${PROJECT_SOURCE_DIR}/external/tinyexpr
     DOWNLOAD_DIR ${PROJECT_SOURCE_DIR}/external/tinyexpr
     GIT_REPOSITORY https://github.com/cschreib/tinyexpr
-    GIT_TAG d1ec9e328ba0be3743cce1856338f9a67fb608ef
+    GIT_TAG 4a912c5d6b274854fc7788dd1824a0245c66520c
     CMAKE_ARGS
         -DTE_NAT_LOG=ON
         -DCMAKE_INSTALL_PREFIX=${PROJECT_SOURCE_DIR}/external

src/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 2.6...4.0)
 project(fast++ C CXX)
 
 if (NOT CMAKE_BUILD_TYPE)