8065912: Better handling of classpath in build-infra

Reviewed-by: erikj

common/autoconf/spec.gmk.in

@@ -30,25 +30,6 @@
 #   (called @OPENJDK_BUILD_AUTOCONF_NAME@ by autoconf)
 # using 'configure @CONFIGURE_COMMAND_LINE@'
 
-# When calling macros, the spaces between arguments are
-# often semantically important! Sometimes we need to subst
-# spaces and commas, therefore we need the following macros.
-X:=
-SPACE:=$(X) $(X)
-COMMA:=,
-DOLLAR:=$$
-HASH:=\#
-LEFT_PAREN:=(
-RIGHT_PAREN:=)
-SQUOTE:='
-#'
-DQUOTE:="
-#"
-define NEWLINE
-
-
-endef
-
 # The command line given to configure.
 CONFIGURE_COMMAND_LINE:=@CONFIGURE_COMMAND_LINE@
 

make/CompileJavaModules.gmk

@@ -534,8 +534,7 @@ define SetupModuleCompilation
     ## Service types are required in the classpath when compiing module-info
     $1_CLASSPATH := $$($1_CLASSPATH) $$(addprefix $(JDK_OUTPUTDIR)/modules/,jdk.hotspot.agent)
   endif
-  $1_CLASSPATH := $$(subst $$(SPACE),$$(PATH_SEP),$$($1_CLASSPATH))
-  $1_JAVAC_FLAGS := -bootclasspath $(EMPTY_DIR) -extdirs $(EMPTY_DIR) -endorseddirs $(EMPTY_DIR) -classpath "$$($1_CLASSPATH)" $$($1_ADD_JAVAC_FLAGS)
+  $1_JAVAC_FLAGS := -bootclasspath $(EMPTY_DIR) -extdirs $(EMPTY_DIR) -endorseddirs $(EMPTY_DIR) $$($1_ADD_JAVAC_FLAGS)
 
   $$(eval $$(call SetupJavaCompilation,$1, \
       SETUP := $$(if $$($1_SETUP), $$($1_SETUP), GENERATE_JDKBYTECODE), \
@@ -543,6 +542,7 @@ define SetupModuleCompilation
       INCLUDES := $(JDK_USER_DEFINED_FILTER),\
       BIN := $$(if $$($1_BIN), $$($1_BIN), $(JDK_OUTPUTDIR)/modules/$1), \
       HEADERS := $(SUPPORT_OUTPUTDIR)/headers/$1, \
+      CLASSPATH := $$($1_CLASSPATH), \
       ADD_JAVAC_FLAGS := $$($1_ADD_JAVAC_FLAGS) $$($1_JAVAC_FLAGS)))
 
   $1: $$($1) $$($1_COPY_EXTRA)

make/common/JavaCompilation.gmk

@@ -403,6 +403,7 @@ endef
 #   SRC:=one or more directories to search for sources. The order of the source roots
 #        is significant. The first found file of a certain name has priority.
 #   BIN:=store classes here
+#   CLASSPATH:=a list of additional entries to set as classpath to javac
 #   INCLUDES:=myapp.foo means will only compile java files in myapp.foo or any of its sub-packages.
 #   EXCLUDES:=myapp.foo means will do not compile java files in myapp.foo or any of its sub-packages.
 #   COPY:=.prp means copy all prp files to the corresponding package in BIN.
@@ -428,6 +429,9 @@ define SetupJavaCompilationBody
   $1_JVM := $$($$($1_SETUP)_JVM)
   $1_JAVAC := $$($$($1_SETUP)_JAVAC)
   $1_FLAGS := $$($$($1_SETUP)_FLAGS) $(JAVAC_FLAGS) $$($1_ADD_JAVAC_FLAGS)
+  ifneq ($$($1_CLASSPATH), )
+    $1_FLAGS += -cp $$(call PathList, $$($1_CLASSPATH))
+  endif
   ifeq ($$($1_JAVAC),)
     $$(error The Java compilation $1 refers to a non-existant java compiler setup $$($1_SETUP))
   endif
@@ -482,7 +486,7 @@ define SetupJavaCompilationBody
       $$(addprefix -i ,$$(addsuffix /*,$$($1_INCLUDES))) \
       $$(addprefix -xf *,$$(strip $$($1_EXCLUDE_FILES) $$($1_SJAVAC_EXCLUDE_FILES))) \
       $$(addprefix -if *,$$(strip $$($1_INCLUDE_FILES))) \
-      -src "$$(subst $$(SPACE),$$(PATH_SEP),$$(strip $$($1_SRC)))"
+      -src $$(call PathList, $$($1_SRC))
 
   # All files below META-INF are always copied.
   $1_ALL_COPIES := $$(filter $$(addsuffix /META-INF%,$$($1_SRC)),$$($1_ALL_SRCS))

make/common/MakeBase.gmk

@@ -41,6 +41,29 @@ endif
 # next make invocation.
 .DELETE_ON_ERROR:
 
+################################################################################
+# Definitions for special characters
+################################################################################
+
+# When calling macros, the spaces between arguments are
+# often semantically important! Sometimes we need to subst
+# spaces and commas, therefore we need the following macros.
+X:=
+SPACE:=$(X) $(X)
+COMMA:=,
+DOLLAR:=$$
+HASH:=\#
+LEFT_PAREN:=(
+RIGHT_PAREN:=)
+SQUOTE:='
+#'
+DQUOTE:="
+#"
+define NEWLINE
+
+
+endef
+
 ##############################
 # Functions
 ##############################
@@ -779,6 +802,14 @@ else
       $(SUPPORT_OUTPUTDIR)/modules_libs/$(strip $1)
 endif
 
+################################################################################
+# Return a string suitable for use after a -classpath option. It will correct and safe to use
+# on all platforms. Arguments are given as space separate classpath entries.
+# param 1 : A space separated list of classpath entries
+# The surrounding strip is needed to keep additional whitespace out
+PathList = \
+  "$(subst $(SPACE),$(PATH_SEP),$(strip $1))"
+
 ################################################################################
 
 # Hook to include the corresponding custom file, if present.

make/common/SetupJavaCompilers.gmk

@@ -78,7 +78,7 @@ $(eval $(call SetupJavaCompiler,GENERATE_JDKBYTECODE_NOWARNINGS, \
     SERVER_DIR := $(SJAVAC_SERVER_DIR), \
     SERVER_JVM := $(SJAVAC_SERVER_JAVA)))
 
-JDK_BOOTCLASSPATH := $(subst $(SPACE),$(PATH_SEP),\
+JDK_BOOTCLASSPATH := $(call PathList, \
     $(filter-out $(JDK_OUTPUTDIR)/modules/_%, $(wildcard $(JDK_OUTPUTDIR)/modules/*)))
 
 # After the jdk is built, we want to build demos using only the recently
@@ -88,7 +88,7 @@ JDK_BOOTCLASSPATH := $(subst $(SPACE),$(PATH_SEP),\
 $(eval $(call SetupJavaCompiler,GENERATE_USINGJDKBYTECODE, \
     JVM := $(JAVA_SMALL), \
     JAVAC := $(NEW_JAVAC), \
-    FLAGS := -bootclasspath "$(JDK_BOOTCLASSPATH)" $(DISABLE_WARNINGS), \
+    FLAGS := -bootclasspath $(JDK_BOOTCLASSPATH) $(DISABLE_WARNINGS), \
     SERVER_DIR := $(SJAVAC_SERVER_DIR), \
     SERVER_JVM := $(SJAVAC_SERVER_JAVA)))