From 432e70051cc388360cbb6b78c83302bdecbbf3f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ole=20Sch=C3=BCtt?= <ole.schuett@cp2k.org>
Date: Wed, 26 Mar 2014 15:08:35 +0000
Subject: [PATCH] Makefile: Ignore cuda files if NVCC is not set

svn-origin-rev: 13714
---
 makefiles/Makefile         |  5 ++++-
 tools/discover_programs.py | 16 +++++++++++++---
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/makefiles/Makefile b/makefiles/Makefile
index f905cb18ea..173c5e56ce 100644
--- a/makefiles/Makefile
+++ b/makefiles/Makefile
@@ -34,10 +34,13 @@ MODDEPS = "lower"
 include $(CP2KHOME)/arch/$(ARCH).$(ONEVERSION)
 LIBDIR  := $(MAINLIBDIR)/$(ARCH)/$(ONEVERSION)
 OBJDIR  := $(MAINOBJDIR)/$(ARCH)/$(ONEVERSION)
+ifeq ($(NVCC),)
+DISCOVER_FLAGS = "--ignore-cuda-files"
+endif
 endif
 
 # Discover programs =========================================================
-ALL_EXE_FILES = $(sort $(shell $(TOOLSRC)/discover_programs.py $(SRCDIR)))
+ALL_EXE_FILES = $(sort $(shell $(TOOLSRC)/discover_programs.py $(SRCDIR) $(DISCOVER_FLAGS) ))
 EXE_NAMES = $(basename $(notdir $(ALL_EXE_FILES)))
 
 # Declare PHONY targets =====================================================
diff --git a/tools/discover_programs.py b/tools/discover_programs.py
index c2b6c9dbdc..5da8864e8b 100755
--- a/tools/discover_programs.py
+++ b/tools/discover_programs.py
@@ -10,12 +10,17 @@ re_main = re.compile(r"\sint\s+main\s*\(")
 
 #============================================================================
 def main():
-    if(len(sys.argv) < 2):
-        print("Usage: discover_programs.py <src-dir>")
+    if(len(sys.argv) not in (2,3)):
+        print("Usage: discover_programs.py <src-dir> [--ignore-cuda-files]")
         sys.exit(1)
 
     srcdir = sys.argv[1]
 
+    ignore_cu_files = False
+    if(len(sys.argv) > 2):
+        assert(sys.argv[2] == "--ignore-cuda-files")
+        ignore_cu_files = True
+
     programs = []
     for root, dirs, files in os.walk(srcdir):
         if(root.endswith("/preprettify")):
@@ -29,10 +34,15 @@ def main():
                 if(is_fortran_program(abs_fn)):
                     programs.append(abs_fn)
 
-            elif(fn[-2:]==".c" or fn[-3:]==".cu"):
+            elif(fn[-2:] == ".c"):
                 if(has_main_function(abs_fn)):
                     programs.append(abs_fn)
 
+            elif(fn[-3:] == ".cu" and not ignore_cu_files):
+                if(has_main_function(abs_fn)):
+                    programs.append(abs_fn)
+
+
     print(" ".join(programs))