libm_powerpc: update buildsys to use TARGET_SUBARCH

Update the powerpc buildsys of libm to use the TARGET_SUBARCH.
Further fix the e500 Makefile.arch by adding the definition
of libm_ARCH_fpu_DIR that was actually missing.

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

libm/Makefile.in

@@ -34,15 +34,8 @@ libm_FULL_NAME := libm-$(VERSION).so
 libm_DIR:=$(top_srcdir)libm
 libm_OUT:=$(top_builddir)libm
 
-# Fix builds for powerpc as there are different cores in this 
-# section now.`
-ifeq ($(TARGET_ARCH)-$(CONFIG_E500),powerpc-y)
-libm_ARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)/e500
-libm_ARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)/e500
-else
 libm_ARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)
 libm_ARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)
-endif
 
 ifneq ($(TARGET_SUBARCH),)
 libm_SUBARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
@@ -225,12 +218,8 @@ endif
 ifeq ($(UCLIBC_HAS_FPU),y)
 ifeq ($(DO_C99_MATH),y)
 ifneq ($(strip $(libm_ARCH_OBJS)),)
-ifeq ($(TARGET_ARCH)-$(CONFIG_E500),powerpc-y)
-CFLAGS-libm/$(TARGET_ARCH)/e500/ := $(CFLAGS-libm)
-else
 CFLAGS-libm/$(TARGET_ARCH)/ := $(CFLAGS-libm)
 CFLAGS-libm/$(TARGET_ARCH)/$(TARGET_SUBARCH)/ := $(CFLAGS-libm)
-endif
 
 # remove generic sources, if arch specific version is present
 ifneq ($(strip $(libm_ARCH_SRC)),)

libm/powerpc/classic/Makefile.arch

@@ -5,8 +5,8 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-libm_ARCH_SRC:=$(wildcard $(libm_ARCH_DIR)/*.c)
-libm_ARCH_OBJ:=$(patsubst $(libm_ARCH_DIR)/%.c,$(libm_ARCH_OUT)/%.o,$(libm_ARCH_SRC))
+libm_ARCH_SRC:=$(wildcard $(libm_SUBARCH_DIR)/*.c)
+libm_ARCH_OBJ:=$(patsubst $(libm_SUBARCH_DIR)/%.c,$(libm_SUBARCH_OUT)/%.o,$(libm_ARCH_SRC))
 
 libm_ARCH_OBJS:=$(libm_ARCH_OBJ)
 

libm/powerpc/e500/Makefile.arch

@@ -5,5 +5,6 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
+libm_ARCH_fpu_DIR := $(libm_SUBARCH_DIR)/fpu
 -include $(libm_ARCH_fpu_DIR)/Makefile.arch