Use -iquote. to include the current directory (#27173)

Uses `-iquote.` instead of `-I.` to prevent issues with C++ headers with
GPU compilation

Resolves #27128

- [x] paratest
- [x] paratest with GASNet 

[Reviewed by @mppf]

Author: jabraham17

compiler/llvm/clangUtil.cpp

@@ -2897,7 +2897,7 @@ static void helpComputeClangArgs(std::string& clangCC,
   }
 
   // add a -I. so we can find headers named on command line in same dir
-  clangCCArgs.push_back("-I.");
+  clangCCArgs.push_back("-iquote.");
 
   // add a -I for the generated code directory
   clangCCArgs.push_back(std::string("-I") + getIntermediateDirName());

runtime/etc/Makefile.exe

@@ -36,7 +36,7 @@ endef
 CHPLUSEROBJFILES = $(CHPLUSEROBJ:%=%.o)
 
 $(TMPDIRNAME)/%.o: $(TMPDIRNAME)/%.c
-	$(CC) $(GEN_CFLAGS) $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) $(COMP_GEN_CFLAGS) -I. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) -c -o $@ $(CHPL_RT_INC_DIR) $<
+	$(CC) $(GEN_CFLAGS) $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) $(COMP_GEN_CFLAGS) -iquote. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) -c -o $@ $(CHPL_RT_INC_DIR) $<
 
 $(TMPBINNAME): $(CHPL_CL_OBJS) checkRtLibDir $(CHPLUSEROBJFILES) FORCE
 	$(TAGS_COMMAND)

runtime/etc/Makefile.include

@@ -89,14 +89,14 @@ x:
 
 printincludesanddefines:
 	@echo $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) \
-	      -I. \
+	      -iquote. \
 	      $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS)
 
 printcompileline:
 	@echo $(CC) \
 	      $(SANITIZER_CFLAGS) $(CHPL_MAKE_BASE_CFLAGS) $(COMP_GEN_CFLAGS) \
 	      $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) \
-	      -I. \
+	      -iquote. \
 				$(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS)
 
 printcxxcompileline:

runtime/etc/Makefile.launcher

@@ -55,7 +55,7 @@ endif
 ifneq ($(CHPL_MAKE_IS_MLI),1)
 	$(CC) $(GEN_CFLAGS) $(COMP_GEN_CFLAGS) \
 		-c -o $(TMPBINNAME)_launcher.o \
-		-DLAUNCHER $(CHPL_LN_INCS) -I. $(LAUNCHER_SRC_NAME)
+		-DLAUNCHER $(CHPL_LN_INCS) -iquote. $(LAUNCHER_SRC_NAME)
 else
 #
 # If we are building launcher object files for a multi-locale library, then
@@ -64,7 +64,7 @@ else
 #
 	$(CC) $(GEN_CFLAGS) $(COMP_GEN_CFLAGS) $(SHARED_LIB_CFLAGS) \
 		-c -o $(TMPBINNAME)_launcher.o \
-		-DLAUNCHER $(CHPL_LN_INCS) -I. $(LAUNCHER_SRC_NAME)
+		-DLAUNCHER $(CHPL_LN_INCS) -iquote. $(LAUNCHER_SRC_NAME)
 endif
 ifneq ($(CHPL_MAKE_IS_MLI),1)
 	$(LD) $(GEN_LFLAGS) $(COMP_GEN_LFLAGS) -o $(TMPBINNAME)_launcher -L$(CHPL_LN_LIB_DIR) $(TMPBINNAME)_launcher.o $(CHPL_LN_LIB_DIR)/main_launcher.o -lchpllaunch -lm $(LAUNCH_LIBS)

runtime/etc/Makefile.mli-common

@@ -90,7 +90,7 @@ endif
 $(TMPSERVERNAME): $(CHPL_CL_OBJS)
 ifneq ($(SKIP_COMPILE_LINK),skip)
 # Compile the server bundle.
-	$(CC) $(GEN_CFLAGS) $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) $(COMP_GEN_CFLAGS) -I. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) \
+	$(CC) $(GEN_CFLAGS) $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) $(COMP_GEN_CFLAGS) -iquote. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) \
 		-c -o $(TMPSERVERNAME).o \
 		$(CHPLSERVERSRC) \
 		$(CHPL_MLI_INC_DIRS) \

runtime/etc/Makefile.mli-shared

@@ -59,7 +59,7 @@ $(TMPBINNAME): $(CHPL_CL_OBJS) FORCE
 # Compile the client bundle. Note the use of $(SHARED_LIB_CFLAGS) here.
 	$(CC) $(SHARED_LIB_CFLAGS) $(GEN_CFLAGS) \
 		$(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) $(COMP_GEN_CFLAGS) \
-		-I. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) \
+		-iquote. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) \
 		-c -o $(TMPBINNAME).o \
 		$(CHPLSRC) \
 		$(COMP_GEN_MLI_EXTRA_INCLUDES) \

runtime/etc/Makefile.mli-static

@@ -51,7 +51,7 @@ $(TMPBINNAME): $(CHPL_CL_OBJS) FORCE
 # Compile the client bundle.
 	$(CC) $(GEN_CFLAGS) \
 	        $(CHPL_MAKE_TARGET_BUNDLED_COMPILE_ARGS) $(COMP_GEN_CFLAGS) \
-	        -I. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) \
+	        -iquote. $(CHPL_MAKE_TARGET_SYSTEM_COMPILE_ARGS) \
 		-c -o $(TMPBINNAME).o \
 		$(CHPLSRC) \
 		$(COMP_GEN_MLI_EXTRA_INCLUDES) \