[PATCH] cpupower: add checks for xgettext and msgfmt

[Siddharth Menon <simeddon@gmail.com>]

Check whether xgettext and msgfmt are available on the system before
attempting to generate the .pot and .gmo files and generate.
In case of missing dependency, generate error message directing user
to install the necessary package.

Signed-off-by: Siddharth Menon <simeddon@gmail.com>
---
 tools/power/cpupower/Makefile | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index 6c02f401069e..38e7daacecf4 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -220,12 +220,20 @@ endif
 
 $(OUTPUT)po/$(PACKAGE).pot: $(UTIL_SRC)
 	$(ECHO) "  GETTEXT " $@
-	$(QUIET) xgettext --default-domain=$(PACKAGE) --add-comments \
-		--keyword=_ --keyword=N_ $(UTIL_SRC) -p $(@D) -o $(@F)
+	$(QUIET) if ! command -v xgettext > /dev/null; then \
+		echo "Error: gettext not found. Please install gettext."; \
+	else \
+		xgettext --default-domain=$(PACKAGE) --add-comments \
+		--keyword=_ --keyword=N_ $(UTIL_SRC) -p $(@D) -o $(@F); \
+	fi
 
 $(OUTPUT)po/%.gmo: po/%.po
 	$(ECHO) "  MSGFMT  " $@
-	$(QUIET) msgfmt -o $@ po/$*.po
+	$(QUIET) if ! command -v msgfmt > /dev/null; then \
+		echo "Error: msgfmt not found. Make sure gettext is set up correctly."; \
+	else \
+		msgfmt -o $@ po/$*.po; \
+	fi
 
 create-gmo: ${GMO_FILES}
 
-- 
2.39.5