Improved option disabling on switching to OpenMM build in a non-clean build tree

[alexxy/gromacs.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e3f3f2e9f2042e8058be658f2cc696d15bdc0b30..5d713e226072fbe0f8291e132cc076bd3f07f1a5 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,7 +49,7 @@ gmx_c_flags()
 ########################################################################
 option(GMX_DOUBLE "Use double precision" OFF)
 option(GMX_MPI    "Build a parallel (message-passing) version of GROMACS" OFF)
-option(GMX_THREADS    "Build a parallel (threaded-based) version of GROMACS)" ON)
+option(GMX_THREADS    "Build a parallel (thread-based) version of GROMACS)" ON)
 option(GMX_SOFTWARE_INVSQRT "Use GROMACS software 1/sqrt" ON)
 option(GMX_FAHCORE "Build a library with mdrun functionality" OFF)
 option(GMX_OPENMM "Accelerated execution on GPUs through the OpenMM library" OFF)
@@ -142,20 +142,25 @@ endif(GMX_MPI)
 if(GMX_OPENMM)
     cmake_minimum_required(VERSION 2.6.4)
     # we'll use the built-in fft to avoid unnecessary dependencies
-    set (GMX_FFT_LIBRARY "fftpack")
+    message(STATUS "No external FFT libraries needed for the OpenMM build, using fftpack!")
+    set (GMX_FFT_LIBRARY "fftpack" CACHE STRING 
+               "No external FFT libraries needed for the OpenMM build, using fftpack!" FORCE)
     if(GMX_MPI)
         message(FATAL_ERROR "The OpenMM build is not compatible with MPI!")
     endif(GMX_MPI)
     if(GMX_THREADS)
-        message(STATUS "Threads not compatible with OpenMM build, disabled")
-        set(GMX_THREADS OFF)
+        message(STATUS "Threads not compatible with OpenMM build, disabled!")
+        set(GMX_THREADS OFF CACHE BOOL 
+               "Threads not compatible with OpenMM build, disabled!" FORCE)
     endif(GMX_THREADS)
     if(GMX_SOFTWARE_INVSQRT)
-        set(GMX_SOFTWARE_INVSQRT OFF)
+        set(GMX_SOFTWARE_INVSQRT OFF FORCE)
     endif(GMX_SOFTWARE_INVSQRT)
-    if(NOT GMX_ACCELERATION MATCHES "auto|none|None|NONE" OR NOT ${GMX_ACCELERATION} STREQUAL "")
-        message(WARNING "The OpenMM build does not support other acceleration modes!")
-        set(GMX_ACCELERATION "none")
+    if(NOT GMX_ACCELERATION MATCHES "^(none|None|NONE)")
+        message(WARNING "CPU-based acceleration turned off, OpenMM does not support/need any!")        
+       unset(GMX_ACCELERATION CACHE)
+        set(GMX_ACCELERATION "none" CACHE STRING 
+               "CPU-based acceleration turned off, OpenMM does not support/need any!" FORCE)
     endif()
     if(GMX_FAHCORE)
         message(FATAL_ERROR "The OpenMM build does not support FAH build!")
@@ -373,7 +378,7 @@ gmx_test_inline_asm_gcc_x86(GMX_X86_GCC_INLINE_ASM)
 gmx_test_inline_asm_msvc_x86(GMX_X86_MSVC_INLINE_ASM)
 
 # turn on SSE if supported with reasonable defaults.
-if (${GMX_ACCELERATION} STREQUAL "auto")
+if (${GMX_ACCELERATION} STREQUAL "auto" AND NOT GMX_OPENMM)
   if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(i.86|x86|x64|x86_64|AMD64|amd64)")
 
     set(GMX_ACCELERATION "SSE" CACHE STRING "Accelerated kernels. Pick one of: none, SSE, BlueGene, Power6, ia64, altivec" FORCE)
@@ -388,7 +393,7 @@ if (${GMX_ACCELERATION} STREQUAL "auto")
   else()
     set(GMX_ACCELERATION "none" CACHE STRING "Accelerated kernels. Pick one of: none, SSE, BlueGene, Power6, ia64, altivec" FORCE)
   endif()
-endif (${GMX_ACCELERATION} STREQUAL "auto")
+endif (${GMX_ACCELERATION} STREQUAL "auto" AND NOT GMX_OPENMM)
 
 
 include(gmxTestXDR)