--- Libc/Libc-763.13/Makefile
+++ Libc/Libc-498.1.7/Makefile
@@ -10,11 +10,10 @@
 LIB=c
 SHLIB_MAJOR= 1
 SHLIB_MINOR= 0
-
-.include <CoreOS/Standard/Commands.mk>
-.include <CoreOS/Standard/Variables.mk>
-
-.if !empty(MACHINE_ARCH:M*64)
+.if (${MACHINE_ARCH} == unknown)
+MACHINE_ARCH != /usr/bin/arch
+.endif 
+.if !empty $(MACHINE_ARCH:M*64)
 LP64 = 1
 .endif
 # RC_TARGET_CONFIG may not be set, so default to MacOSX (which is good enough
@@ -23,23 +22,10 @@
 RC_TARGET_CONFIG = MacOSX
 .endif
 
-.ifndef RC_ProjectName
-RC_ProjectName = Libc
-.endif
-
-# Use default compiler, so comment out OTHERCC
-#OTHERCC = gcc-4.0
-# HOSTCC is the compiler on the local host, so we need to unset any SDKROOT
-# to before calling PATH_OF_COMMAND
-.ifdef OTHERCC
-MYCC != ${PATH_OF_COMMAND} ${OTHERCC}
-HOSTCC != export -n SDKROOT && ${PATH_OF_COMMAND} ${OTHERCC}
-.else
-MYCC = ${CC}
-HOSTCC != export -n SDKROOT && ${PATH_OF_COMMAND} cc
-.endif
-GCC_VERSION != ${MYCC} -dumpversion | ${SED} -e 's/^\([^.]*\.[^.]*\).*/\1/'
-GCC_42 != ${PERL} -e "print ($(GCC_VERSION) >= 4.2 ? 'YES' : 'NO')"
+#use default compiler
+#CC = gcc-4.0
+GCC_VERSION != cc -dumpversion | sed -e 's/^\([^.]*\.[^.]*\).*/\1/'
+GCC_42 != perl -e "print ($(GCC_VERSION) >= 4.2 ? 'YES' : 'NO')"
 
 .ifdef ALTLIBCHEADERS
 INCLUDEDIR = ${ALTLIBCHEADERS}
@@ -53,10 +39,10 @@
 LIBCFLAGS += ${PRIVINC}
 
 SYMROOTINC = ${SYMROOT}/include
-CFLAGS = -g -arch ${CCARCH} ${RC_NONARCH_CFLAGS} -std=gnu99 -fno-common -fno-builtin -Wmost
-CFLAGS += -D__LIBC__ -D__DARWIN_UNIX03=1 -D__DARWIN_64_BIT_INO_T=1 -D__DARWIN_NON_CANCELABLE=1 -D__DARWIN_VERS_1050=1 -D_FORTIFY_SOURCE=0
+CFLAGS = -g -arch ${CCARCH} ${RC_NONARCH_CFLAGS} -std=gnu99 -fno-common -Wmost
+CFLAGS += -D__LIBC__ -D__DARWIN_UNIX03=1 -D__DARWIN_64_BIT_INO_T=1 -D__DARWIN_NON_CANCELABLE=1 -D__DARWIN_VERS_1050=1
 CFLAGS += -DNOID -DLIBC_MAJOR=${SHLIB_MAJOR}
-CFLAGS += -I${.OBJDIR} ${VARIANTINC} -I${SYMROOTINC} -I${.CURDIR}/include
+CFLAGS += -I${.OBJDIR} -I${SYMROOTINC} -I${.CURDIR}/include
 AINC = -g -arch ${CCARCH} ${RC_NONARCH_CFLAGS}
 AINC += -I${.CURDIR}/${MACHINE_ARCH} ${PRIVINC}
 .if $(MACHINE_ARCH) != arm
@@ -68,6 +54,10 @@
 AINC += -isysroot '${SDKROOT}'
 .endif # SDKROOT
 
+.if ${GCC_42} != YES
+CFLAGS += -no-cpp-precomp
+AINC += -no-cpp-precomp
+.endif
 CLEANFILES+=tags
 INSTALL_PIC_ARCHIVE=	yes
 PRECIOUSLIB=	yes
@@ -81,21 +71,22 @@
 SRCROOT ?= ${.CURDIR}
 .ifndef SYMROOT
 SYMROOT = ${.CURDIR}/SYMROOT
-_x_ != ${TEST} -d ${SYMROOT} || ${MKDIR} ${SYMROOT}
+_x_ != test -d ${SYMROOT} || mkdir -p ${SYMROOT}
 .endif
 DESTDIR ?= ${DSTROOT}
 MAKEOBJDIR ?= ${OBJROOT}
-PLATROOT != xcodebuild -version -sdk $(SDKROOT) PlatformPath | tr -d '\n'
 
 # add version string
 SRCS += libc_version.c
 libc_version.c:
-	${PLATROOT}/Developer/Makefiles/bin/version.pl Libc > $@
+	${SDKROOT}/Developer/Makefiles/bin/version.pl Libc > $@
 
 .include "Makefile.features"
 .include "${.CURDIR}/Makefile.inc"
 .include "Makefile.xbs"
 
-MANFILTER = ${UNIFDEF} -t ${UNIFDEFARGS}
+MANFILTER = unifdef -t ${UNIFDEFARGS}
+.if exists(/usr/share/mk/bsd.init.mk)
 .include <bsd.init.mk>
+.endif
 .include <bsd.man.mk>