Use $(CURDIR) instead of $(PWD) in Makefile

Some shells (in particular ksh) don't export PWD by default, so it
doesn't end up as a make variable.

Makefile

@@ -1,5 +1,5 @@
 
-OUTPUT = $(PWD)/output
+OUTPUT = $(CURDIR)/output
 SOURCES = sources
 
 CONFIG_SUB_REV = 3d5db9ebe860
@@ -67,7 +67,7 @@ $(SOURCES)/config.sub: | $(SOURCES)
 	mkdir -p $@.tmp
 	cd $@.tmp && wget -c -O $(notdir $@) "http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=$(CONFIG_SUB_REV)"
 	cd $@.tmp && touch $(notdir $@)
-	cd $@.tmp && sha1sum -c $(PWD)/hashes/$(notdir $@).$(CONFIG_SUB_REV).sha1
+	cd $@.tmp && sha1sum -c $(CURDIR)/hashes/$(notdir $@).$(CONFIG_SUB_REV).sha1
 	mv $@.tmp/$(notdir $@) $@
 	rm -rf $@.tmp
 
@@ -75,7 +75,7 @@ $(SOURCES)/%: hashes/%.sha1 | $(SOURCES)
 	mkdir -p $@.tmp
 	cd $@.tmp && wget -c -O $(notdir $@) $(SITE)/$(notdir $@)
 	cd $@.tmp && touch $(notdir $@)
-	cd $@.tmp && sha1sum -c $(PWD)/hashes/$(notdir $@).sha1
+	cd $@.tmp && sha1sum -c $(CURDIR)/hashes/$(notdir $@).sha1
 	mv $@.tmp/$(notdir $@) $@
 	rm -rf $@.tmp
 

config.mak.dist

@@ -64,4 +64,4 @@
 # target libraries with the following, but then gdb needs to be told
 # where to look for source files.
 
-# COMMON_CONFIG += --with-debug-prefix-map=$(PWD)=
+# COMMON_CONFIG += --with-debug-prefix-map=$(CURDIR)=

litecross/Makefile

@@ -1,5 +1,5 @@
 
-OUTPUT = $(PWD)/output
+OUTPUT = $(CURDIR)/output
 
 BINUTILS_SRCDIR = BINUTILS_SRCDIR_not_set
 GCC_SRCDIR = GCC_SRCDIR_not_set
@@ -52,7 +52,7 @@ FULL_TOOLCHAIN_CONFIG = --enable-languages=c,c++ \
 	--target=$(TARGET) --prefix= \
 	--libdir=/lib --disable-multilib \
 	--with-sysroot=$(SYSROOT) \
-	--with-build-sysroot=$(PWD)/obj_sysroot \
+	--with-build-sysroot=$(CURDIR)/obj_sysroot \
 	--enable-tls \
 	--disable-libmudflap --disable-libsanitizer \
 	--disable-gnu-indirect-function \
@@ -163,7 +163,7 @@ obj_musl/.lc_configured: | obj_toolchain/gcc/.lc_built obj_musl src_musl
 	touch $@
 
 obj_sysroot/.lc_headers: | obj_musl/.lc_configured obj_sysroot
-	cd obj_musl && $(MAKE) DESTDIR=$(PWD)/obj_sysroot install-headers
+	cd obj_musl && $(MAKE) DESTDIR=$(CURDIR)/obj_sysroot install-headers
 	touch $@
 
 obj_toolchain/$(TARGET)/libgcc/.lc_configured: | obj_sysroot/.lc_headers
@@ -178,7 +178,7 @@ obj_musl/.lc_built: | obj_musl/.lc_configured
 	touch $@
 
 obj_sysroot/.lc_libs: | obj_musl/.lc_built
-	cd obj_musl && $(MAKE) $(MUSL_VARS) DESTDIR=$(PWD)/obj_sysroot install
+	cd obj_musl && $(MAKE) $(MUSL_VARS) DESTDIR=$(CURDIR)/obj_sysroot install
 	touch $@
 
 obj_toolchain/.lc_built: | obj_toolchain/.lc_configured obj_toolchain/gcc/.lc_built
@@ -204,8 +204,8 @@ kernel-headers: | obj_kernel_headers/.lc_built
 src_kernel_headers: | $(LINUX_SRCDIR)
 	ln -sf "$(LINUX_SRCDIR)" $@
 obj_kernel_headers/.lc_built: | src_kernel_headers
-	mkdir -p $(PWD)/obj_kernel_headers/staged
-	cd src_kernel_headers && $(MAKE) ARCH=$(LINUX_ARCH) O=$(PWD)/obj_kernel_headers INSTALL_HDR_PATH=$(PWD)/obj_kernel_headers/staged headers_install
+	mkdir -p $(CURDIR)/obj_kernel_headers/staged
+	cd src_kernel_headers && $(MAKE) ARCH=$(LINUX_ARCH) O=$(CURDIR)/obj_kernel_headers INSTALL_HDR_PATH=$(CURDIR)/obj_kernel_headers/staged headers_install
 	find obj_kernel_headers/staged/include '(' -name .install -o -name ..install.cmd ')' -exec rm {} +
 	touch $@
 install-kernel-headers: | obj_kernel_headers/.lc_built