Fix libgloss/newlib build to conditionally use top include dir

- conditionally use -idirafter option for arm

libgloss/Makefile.am

@@ -24,7 +24,11 @@ includetool_DATA =
 includesystooldir = $(tooldir)/include/sys
 includesystool_DATA =
 
+if NEED_TOP_INCLUDE_DIR
 AM_CPPFLAGS = -idirafter $(srcroot)/include
+else
+AM_CPPFLAGS =
+endif
 
 # A fake library so automake will generate rules for plain objects that we want
 # to install (e.g. our crt0.o objects).

libgloss/Makefile.in

@@ -807,7 +807,8 @@ includetooldir = $(tooldir)/include
 includetool_DATA = $(am__append_16)
 includesystooldir = $(tooldir)/include/sys
 includesystool_DATA = $(am__append_17)
-AM_CPPFLAGS = -idirafter $(srcroot)/include
+@NEED_TOP_INCLUDE_DIR_FALSE@AM_CPPFLAGS = 
+@NEED_TOP_INCLUDE_DIR_TRUE@AM_CPPFLAGS = -idirafter $(srcroot)/include
 
 # A fake library so automake will generate rules for plain objects that we want
 # to install (e.g. our crt0.o objects).

libgloss/config/arm.mh

@@ -0,0 +1,34 @@
+NEWLIB_CFLAGS = `if [ -d ${objroot}/newlib ]; then echo -I${objroot}/newlib/targ-include -I${srcroot}/newlib/libc/include; fi`
+NEWLIB_LDFLAGS = `if [ -d ${objroot}/newlib ]; then echo -B${objroot}/newlib/ -L${objroot}/newlib/; fi`
+
+INCLUDES = -I. -I$(srcdir)/.. -I$(objdir)/.. -idirafter $(srcroot)/include
+# Note that when building the library, ${MULTILIB} is not the way multilib
+# options are passed; they're passed in $(CFLAGS).
+CFLAGS_FOR_TARGET = -O2 -g ${MULTILIB} ${INCLUDES} ${NEWLIB_CFLAGS}
+LDFLAGS_FOR_TARGET = ${MULTILIB} ${NEWLIB_LDFLAGS}
+AR_FLAGS = rc
+
+.c.o:
+	$(CC) $(CFLAGS_FOR_TARGET) -O2 $(INCLUDES) -c $(CFLAGS) $<
+
+.C.o:
+	$(CC) $(CFLAGS_FOR_TARGET) -O2 $(INCLUDES) -c $(CFLAGS) $<
+.s.o:
+	$(AS) $(ASFLAGS_FOR_TARGET) $(INCLUDES) $(ASFLAGS) -o $*.o $<
+
+#
+# GCC knows to run the preprocessor on .S files before it assembles them.
+#
+.S.o:
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) -c $<
+
+#
+# this is a bogus target that'll produce an assembler from the
+# C source with the right compiler options. this is so we can
+# track down code generation or debug symbol bugs.
+#
+.c.s:
+	$(CC) $(CFLAGS_FOR_TARGET) -S $(INCLUDES) $(CFLAGS) $<
+
+# We don't build docs in subdirs, so stub out the rules.
+.PHONY: doc docs dvi html install-html info install-info clean-info pdf install-pdf

libgloss/config/default.mh

@@ -1,7 +1,7 @@
 NEWLIB_CFLAGS = `if [ -d ${objroot}/newlib ]; then echo -I${objroot}/newlib/targ-include -I${srcroot}/newlib/libc/include; fi`
 NEWLIB_LDFLAGS = `if [ -d ${objroot}/newlib ]; then echo -B${objroot}/newlib/ -L${objroot}/newlib/; fi`
 
-INCLUDES = -I. -I$(srcdir)/.. -I$(objdir)/.. -idirafter $(srcroot)/include
+INCLUDES = -I. -I$(srcdir)/.. -I$(objdir)/..
 # Note that when building the library, ${MULTILIB} is not the way multilib
 # options are passed; they're passed in $(CFLAGS).
 CFLAGS_FOR_TARGET = -O2 -g ${MULTILIB} ${INCLUDES} ${NEWLIB_CFLAGS}

libgloss/configure

@@ -630,6 +630,8 @@ CPPFLAGS
 LDFLAGS
 CFLAGS
 CC
+NEED_TOP_INCLUDE_DIR_FALSE
+NEED_TOP_INCLUDE_DIR_TRUE
 CONFIG_WINCE_FALSE
 CONFIG_WINCE_TRUE
 CONFIG_RISCV_FALSE
@@ -2949,6 +2951,7 @@ case "${target}" in
 	;;
   arm*-*-elf | arm*-*-coff | arm*-*-*)
 	config_arm=true
+	host_makefile_frag=${srcdir}/config/arm.mh
 	;;
   spu-*-elf)
 	ac_config_files="$ac_config_files spu/Makefile"
@@ -3081,6 +3084,15 @@ fi
 
 
 
+ if test x$config_arm = xtrue; then
+  NEED_TOP_INCLUDE_DIR_TRUE=
+  NEED_TOP_INCLUDE_DIR_FALSE='#'
+else
+  NEED_TOP_INCLUDE_DIR_TRUE='#'
+  NEED_TOP_INCLUDE_DIR_FALSE=
+fi
+
+
 
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -5347,6 +5359,10 @@ if test -z "${CONFIG_WINCE_TRUE}" && test -z "${CONFIG_WINCE_FALSE}"; then
   as_fn_error $? "conditional \"CONFIG_WINCE\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${NEED_TOP_INCLUDE_DIR_TRUE}" && test -z "${NEED_TOP_INCLUDE_DIR_FALSE}"; then
+  as_fn_error $? "conditional \"NEED_TOP_INCLUDE_DIR\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
   as_fn_error $? "conditional \"AMDEP\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5

libgloss/configure.ac

@@ -214,6 +214,7 @@ case "${target}" in
 	;;
   arm*-*-elf | arm*-*-coff | arm*-*-*)
 	config_arm=true
+	host_makefile_frag=${srcdir}/config/arm.mh
 	;;
   spu-*-elf)
 	AC_CONFIG_FILES([spu/Makefile])
@@ -252,6 +253,9 @@ m4_foreach_w([SUBDIR], [
   AM_CONDITIONAL([CONFIG_]m4_toupper(SUBDIR), [test x$config_]SUBDIR = xtrue)
 ])
 
+dnl arm platforms have a special header file found in the main include directory
+AM_CONDITIONAL([NEED_TOP_INCLUDE_DIR], [[test x$config_arm] = xtrue])
+
 dnl For now, don't bother configuring testsuite
 dnl
 dnl if test "${config_testsuite}" = "true";

newlib/Makefile.am

@@ -70,7 +70,11 @@ toollibdir = $(tooldir)/lib$(MULTISUBDIR)
 # These are useful for standalone object files like crt0.o.
 AM_CFLAGS = $(AM_CFLAGS_$(subst /,_,$(@D))) $(AM_CFLAGS_$(subst /,_,$(@D)_$(<F)))
 AM_CCASFLAGS = $(AM_CCASFLAGS_$(subst /,_,$(@D))) $(AM_CCASFLAGS_$(subst /,_,$(@D)_$(<F)))
+if HAVE_LIBC_MACHINE_ARM
 AM_CPPFLAGS = $(NEWLIB_CFLAGS) $(TARGET_CFLAGS) $(AM_CPPFLAGS_$(subst /,_,$(@D))) $(AM_CPPFLAGS_$(subst /,_,$(@D)_$(<F))) -idirafter $(srcroot)/include
+else
+AM_CPPFLAGS = $(NEWLIB_CFLAGS) $(TARGET_CFLAGS) $(AM_CPPFLAGS_$(subst /,_,$(@D))) $(AM_CPPFLAGS_$(subst /,_,$(@D)_$(<F)))
+endif
 
 toollib_LIBRARIES = libm.a \
 	libc.a

newlib/Makefile.in

@@ -3848,7 +3848,8 @@ toollibdir = $(tooldir)/lib$(MULTISUBDIR)
 # These are useful for standalone object files like crt0.o.
 AM_CFLAGS = $(AM_CFLAGS_$(subst /,_,$(@D))) $(AM_CFLAGS_$(subst /,_,$(@D)_$(<F)))
 AM_CCASFLAGS = $(AM_CCASFLAGS_$(subst /,_,$(@D))) $(AM_CCASFLAGS_$(subst /,_,$(@D)_$(<F)))
-AM_CPPFLAGS = $(NEWLIB_CFLAGS) $(TARGET_CFLAGS) $(AM_CPPFLAGS_$(subst /,_,$(@D))) $(AM_CPPFLAGS_$(subst /,_,$(@D)_$(<F))) -idirafter $(srcroot)/include
+@HAVE_LIBC_MACHINE_ARM_FALSE@AM_CPPFLAGS = $(NEWLIB_CFLAGS) $(TARGET_CFLAGS) $(AM_CPPFLAGS_$(subst /,_,$(@D))) $(AM_CPPFLAGS_$(subst /,_,$(@D)_$(<F)))
+@HAVE_LIBC_MACHINE_ARM_TRUE@AM_CPPFLAGS = $(NEWLIB_CFLAGS) $(TARGET_CFLAGS) $(AM_CPPFLAGS_$(subst /,_,$(@D))) $(AM_CPPFLAGS_$(subst /,_,$(@D)_$(<F))) -idirafter $(srcroot)/include
 toollib_LIBRARIES = libm.a libc.a $(am__append_72)
 @HAVE_MULTISUBDIR_TRUE@BUILD_MULTISUBDIR = $(builddir)$(MULTISUBDIR)
 toollib_DATA = $(CRT0) $(CRT1)