[PATCH] tools/build: avoid $(file ...) directive in Makefile

[Juergen Gross <jgross@xxxxxxxx>]

Using $(file ...) breaks the build with make older than version 4.0.
Replace it with echo.

Fixes: 52dbd6f07cea7a ("tools: generate pkg-config files from make variables")
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 tools/Rules.mk | 48 ++++++++++++++++++++++++------------------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/tools/Rules.mk b/tools/Rules.mk
index ccb197596e..8ba8230270 100644
--- a/tools/Rules.mk
+++ b/tools/Rules.mk
@@ -175,29 +175,29 @@ $(PKG_CONFIG_DIR):
        mkdir -p $(PKG_CONFIG_DIR)
 
 $(PKG_CONFIG_DIR)/%.pc: Makefile $(XEN_ROOT)/tools/Rules.mk $(PKG_CONFIG_DIR)
-       $(file >$@,prefix=$(PKG_CONFIG_PREFIX))
-       $(file >>$@,includedir=$(PKG_CONFIG_INCDIR))
-       $(file >>$@,libdir=$(PKG_CONFIG_LIBDIR))
-       $(foreach var,$(PKG_CONFIG_VARS),$(file >>$@,$(var)))
-       $(file >>$@,)
-       $(file >>$@,Name: $(PKG_CONFIG_NAME))
-       $(file >>$@,Description: $(PKG_CONFIG_DESC))
-       $(file >>$@,Version: $(PKG_CONFIG_VERSION))
-       $(file >>$@,Cflags: -I$${includedir} $(CFLAGS_xeninclude))
-       $(file >>$@,Libs: -L$${libdir} $(PKG_CONFIG_USELIBS) 
-l$(PKG_CONFIG_LIB))
-       $(file >>$@,Libs.private: $(PKG_CONFIG_LIBSPRIV))
-       $(file >>$@,Requires.private: $(PKG_CONFIG_REQPRIV))
+       @echo "prefix=$(PKG_CONFIG_PREFIX)" >$@
+       @echo "includedir=$(PKG_CONFIG_INCDIR)" >>$@
+       @echo "libdir=$(PKG_CONFIG_LIBDIR)" >>$@
+       @for v in $(PKG_CONFIG_VARS); do echo "$$v" >>$@; done
+       @echo "" >>$@
+       @echo "Name: $(PKG_CONFIG_NAME)" >>$@
+       @echo "Description: $(PKG_CONFIG_DESC)" >>$@
+       @echo "Version: $(PKG_CONFIG_VERSION)" >>$@
+       @echo "Cflags: -I\$${includedir} $(CFLAGS_xeninclude)" >>$@
+       @echo "Libs: -L\$${libdir} $(PKG_CONFIG_USELIBS) -l$(PKG_CONFIG_LIB)" 
>>$@
+       @echo "Libs.private: $(PKG_CONFIG_LIBSPRIV)" >>$@
+       @echo "Requires.private: $(PKG_CONFIG_REQPRIV)" >>$@
 
 %.pc: Makefile $(XEN_ROOT)/tools/Rules.mk
-       $(file >$@,prefix=$(PKG_CONFIG_PREFIX))
-       $(file >>$@,includedir=$(PKG_CONFIG_INCDIR))
-       $(file >>$@,libdir=$(PKG_CONFIG_LIBDIR))
-       $(foreach var,$(PKG_CONFIG_VARS),$(file >>$@,$(var)))
-       $(file >>$@,)
-       $(file >>$@,Name: $(PKG_CONFIG_NAME))
-       $(file >>$@,Description: $(PKG_CONFIG_DESC))
-       $(file >>$@,Version: $(PKG_CONFIG_VERSION))
-       $(file >>$@,Cflags: -I$${includedir})
-       $(file >>$@,Libs: -L$${libdir} -l$(PKG_CONFIG_LIB))
-       $(file >>$@,Libs.private: $(PKG_CONFIG_LIBSPRIV))
-       $(file >>$@,Requires.private: $(PKG_CONFIG_REQPRIV))
+       @echo "prefix=$(PKG_CONFIG_PREFIX)" >$@
+       @echo "includedir=$(PKG_CONFIG_INCDIR)" >>$@
+       @echo "libdir=$(PKG_CONFIG_LIBDIR)" >>$@
+       @for v in $(PKG_CONFIG_VARS); do echo "$$v" >>$@; done
+       @echo "" >>$@
+       @echo "Name: $(PKG_CONFIG_NAME)" >>$@
+       @echo "Description: $(PKG_CONFIG_DESC)" >>$@
+       @echo "Version: $(PKG_CONFIG_VERSION)" >>$@
+       @echo "Cflags: -I\$${includedir}" >>$@
+       @echo "Libs: -L\$${libdir} -l$(PKG_CONFIG_LIB)" >>$@
+       @echo "Libs.private: $(PKG_CONFIG_LIBSPRIV)" >>$@
+       @echo "Requires.private: $(PKG_CONFIG_REQPRIV)" >>$@
-- 
2.26.2