Autodetect target architecture by asking the compiler.
-Erik
GCCINCDIR = ${shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}
NATIVE_ARCH = ${shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/ppc/powerpc/g'}
+TARGET_ARCH=${shell $(CC) -dumpmachine | sed -e s'/-linux//' -e 's/i.86/i386/' -e 's/sparc.*/sparc/' \
+ -e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/ppc/powerpc/g'}
-# use '-Os' optimization if available, else use -O2, allow Config to override
+# Some nice architecture specific optimizations
ifndef OPTIMIZATION
+# use '-Os' optimization if available, else use -O2, allow Config to override
OPTIMIZATION = ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
then echo "-Os"; else echo "-O2" ; fi}
+ifeq ($(strip $(TARGET_ARCH)),arm)
+ OPTIMIZATION+=-fstrict-aliasing
+endif
+ifeq ($(strip $(TARGET_ARCH)),i386)
+ OPTIMIZATION+=-march=i386
+ OPTIMIZATION += ${shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc \
+ /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi}
+ OPTIMIZATION += ${shell if $(CC) -malign-functions=0 -malign-jumps=0 -malign-loops=0 \
+ -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo \
+ "-malign-functions=0 -malign-jumps=0 -malign-loops=0"; fi}
+ CPUFLAGS+=-pipe
+else
+ CPUFLAGS+=-pipe
+endif
endif
ARFLAGS=r
ifeq ($(strip $(BUILD_UCLIBC_LDSO)),true)
LDSO=$(TOPDIR)lib/$(UCLIBC_LDSO)
DYNAMIC_LINKER=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO)
- BUILD_DYNAMIC_LINKER=$(shell cd $(TOPDIR)lib; pwd)/$(UCLIBC_LDSO)
+ BUILD_DYNAMIC_LINKER=${shell cd $(TOPDIR)lib && pwd}/$(UCLIBC_LDSO)
else
LDSO=$(SYSTEM_LDSO)
DYNAMIC_LINKER=/lib/$(notdir $(SYSTEM_LDSO))
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-TARGET_ARCH=arm
-#TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = #arm-linux-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-TARGET_ARCH=arm
-#TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = arm-elf-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = #$(TARGET_ARCH)-linux-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-#TARGET_ARCH=i386
-TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
#CROSS = m68k-elf-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-#TARGET_ARCH=i386
-TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = m68k-coff-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-#TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-TARGET_ARCH=mipsel
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = mipsel-linux-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-#TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-TARGET_ARCH=mipsel
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = mipsel-linux-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-#TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-TARGET_ARCH=powerpc
-#TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = #$(TARGET_ARCH)-linux-
CC = $(CROSS)gcc
# other sundry sources. Files within this library are copyright by their
# respective copyright holders.
-# What arch do you want to compile for...
-#TARGET_ARCH=arm
-#TARGET_ARCH=i386
-#TARGET_ARCH=m68k
-#TARGET_ARCH=powerpc
-TARGET_ARCH=sh
-#TARGET_ARCH=sparc
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = /usr/cygnus/yapp-001013/H-i686-pc-linux-gnulibc2.1/bin/sh-linux-gnu-
CC = $(CROSS)gcc
# Cross compile on i386-pc-linux-gnu
DESTDIR=$(PROJ_UCLINUX)/i386-pc-linux-gnu/v850e-linux
-# What arch do you want to compile for...
-TARGET_ARCH = v850
-
# If you are running a cross compiler, you may want to set this
-# to something more interesting...
+# to something more interesting... Target architecture is determined
+# by asking this compiler what arch it compiles stuff for.
NATIVE_CC = gcc
CROSS = v850e-elf-
CC = $(CROSS)gcc