[libvirt] [PATCH] cfg.mk: Introduce rule for setlocale()

[Michal Privoznik]

In the past we had some issues where setlocale() was called without
corresponding include of locale.h. While on some systems this may
work, on others the compilation failed. We should have a syntax-check
rule for that to prevent this from happening again.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 cfg.mk | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/cfg.mk b/cfg.mk
index 9e8fcec..36395c6 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -929,6 +929,15 @@ sc_prohibit_mixed_case_abbreviations:
 	halt='Use PCI, USB, SCSI, not Pci, Usb, Scsi'	\
 	  $(_sc_search_regexp)
 
+# Require #include <locale.h> in all files that call setlocale()
+sc_require_locale_h:
+	@for i in $$($(VC_LIST_EXCEPT) | grep '\.[chx]$$'); do			\
+		if test -z "$$(grep setlocale $$i)" ; then continue; fi;	\
+		if test -z "$$(grep 'include <locale.h>' $$i)" ; then		\
+			echo '$(ME): missing locale.h include in' $$i 1>&2; exit 1;	\
+		fi;															\
+	done;
+
 # We don't use this feature of maint.mk.
 prev_version_file = /dev/null
 
-- 
2.0.0