Make CMake out-of-tree builds work. GPUE srcs must remain at build location, but gpue binary now relocatable with unit tests

Author: mlxd

CMakeLists.txt

@@ -8,6 +8,13 @@ set(
     -O3 -gencode arch=compute_37,code=sm_37 -lcufft -fopenmp
 )
 
+find_file( EXAMPLE_CFG example.cfg src/ )
+add_library(unitTest OBJECT src/unit_test.cu include/unit_test.h include/kernels.h)
+set( CFG_FILE_PATH _CFG_FILE_PATH="${EXAMPLE_CFG}" )
+target_compile_options(
+   unitTest PRIVATE -D${CFG_FILE_PATH} -dc
+)
+
 add_executable(
     gpue
     src/dynamic.cu
@@ -54,8 +61,7 @@ add_executable(
     src/tracker.cu
     include/tracker.h
 
-    src/unit_test.cu
-    include/unit_test.h
+    $<TARGET_OBJECTS:unitTest>
 
     src/vort.cu
     include/vort.h

src/unit_test.cu

@@ -10,6 +10,7 @@
 #include <cufft.h>
 #include <vector>
 #include <fstream>
+#include <sstream>
 
 // Adding tests for mathematical operator kernels
 void math_operator_test();
@@ -380,8 +381,17 @@ void dynamic_test(){
     }
 
     // Now testing simple parsing of example "example.cfg"
+#ifdef _CFG_FILE_PATH
+    std::stringstream ss;
+    ss << _CFG_FILE_PATH;
+    std::string cfg_path;
+    ss >> cfg_path;
+#else
+    std::string cfg_path = "src/example.cfg";
+#endif
+
     std::cout << "Testing simple parameter parsing." << '\n';
-    par.store("param_file", (std::string)"src/example.cfg");
+    par.store("param_file", cfg_path);
     parse_param_file(par);
     EqnNode_gpu *eqn = par.astval("V");
     find_field<<<grid, threads>>>(array_gpu, 0.1, 0.1, 0.1, 1, 1, 1, 0, eqn);