[PATCH] sanity.bbclass: Check for the presennce of libc.a

[Holger Freyther <holger+oe@freyther.de>]

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The insmod.static binary links statically and requires the libc.a
to be present. On Fedora glibc-static is not installed by default
when installing development headers. Warn the user that he needs
to have that installed.

Signed-off-by: Holger Hans Peter Freyther <zecke@selfish.org>
---
 classes/sanity.bbclass |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)



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diff --git a/classes/sanity.bbclass b/classes/sanity.bbclass
index 575530a..7f99251 100644
--- a/classes/sanity.bbclass
+++ b/classes/sanity.bbclass
@@ -99,6 +99,18 @@ def check_sanity(e):
 		missing = missing.rstrip(',')
 		messages = messages + "Please install following missing utilities: %s\n" % missing
 
+	# Libs that need to be present. E.g. libc.a for insmod.static
+	required_libs = "libc.a"
+	missing = ""
+	for lib in required_libs.split():
+		if not os.path.exists("/lib/%s" % lib) and not os.path.exists("/usr/lib/%s" % lib):
+			missing = "%s, %s" % (missing, lib)
+
+	if missing != "":
+		missing = missing.rstrip(',')
+		messages = "%sPlease install the following libraries: %s\n" % (messages, missing)
+
+
 	try:
 	    if os.path.basename(os.readlink('/bin/sh')) == 'dash':
 		    messages = messages + "Using dash as /bin/sh causes various subtle build problems, please use bash instead.\n"