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path: root/0012-Fixed-bug-110.-create-localdecls-correctly-identifie.patch
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From 4bb8c9fed4d4b2f8828282f17727dbc513ced45f Mon Sep 17 00:00:00 2001
From: Felipe Eduardo Sanchez Diaz Duran <izto@asic-linux.com.mx>
Date: Sun, 28 Dec 2014 14:09:23 -0600
Subject: [PATCH 12/20] Fixed bug #110. create-localdecls correctly identifies
 newer glibc versions.

---
 installwatch/Makefile          |  2 +-
 installwatch/create-localdecls | 92 +++++++++-------------------------
 installwatch/installwatch.c    |  2 +-
 installwatch/libcfiletest.c    |  4 ++
 installwatch/libctest.c        |  8 ++-
 5 files changed, 35 insertions(+), 73 deletions(-)
 create mode 100644 installwatch/libcfiletest.c

diff --git a/installwatch/Makefile b/installwatch/Makefile
index ae34fc1..4c7eb36 100644
--- a/installwatch/Makefile
+++ b/installwatch/Makefile
@@ -40,7 +40,7 @@ uninstall:
 	rm -f $(BINDIR)/installwatch
 	
 clean:
-	rm -f *~ *.bak *.o installwatch.so core localdecls.h libctest test-installwatch
+	rm -f *~ *.bak *.o installwatch.so core localdecls.h libcfiletest libctest test-installwatch
 
 tarball: clean
 	tar -czvC .. -f ../installwatch-$(VERSION).tar.gz installwatch-$(VERSION)
diff --git a/installwatch/create-localdecls b/installwatch/create-localdecls
index 407e755..533a378 100755
--- a/installwatch/create-localdecls
+++ b/installwatch/create-localdecls
@@ -43,78 +43,32 @@ fi
 ###
 ###
 
-echo -n 'Checking libc version... '
-gcc -Wall -o libctest libctest.c
-VERSION=`ldd libctest | grep libc\\.so | awk '{print $1}'`
-rm libctest
-echo $VERSION
-echo "#define LIBC_VERSION \"$VERSION\"" >> $OUTFILE
-if test "$VERSION" = 'libc.so.5' ; then
+echo -n 'Checking which libc whe are using... '
+gcc -Wall -o libcfiletest libcfiletest.c
+LIBC_FILE=`ldd libcfiletest | grep libc\\.so | awk '{print $1}'`
+echo $LIBC_FILE
+echo "#define LIBC_FILE \"$LIBC_FILE\"" >> $OUTFILE
+if test "$LIBC_FILE" = 'libc.so.5' ; then
 	echo '#define BROKEN_RTLD_NEXT' >> $OUTFILE
 	echo '#define LIBC 5' >> $OUTFILE
-fi
+else
+	if test "$LIBC_FILE" = 'libc.so.6' ; then
+		echo -n 'Checking libc version... '
+		gcc -Wall -o libctest libctest.c
+		LIBC_VERSION=`./libctest`
+		echo $LIBC_VERSION
+		echo "#define LIBC_VERSION \"$LIBC_VERSION\"" >> $OUTFILE
+		echo -en 'glibc >= 2 found\nChecking glibc subversion... '
+		OsLibcMajor=`echo $LIBC_VERSION | cut -f1 -d.`
+		OsLibcMinor=`echo $LIBC_VERSION | cut -f2 -d.`
+		echo "#define GLIBC_MAJOR $OsLibcMajor" >> $OUTFILE
+		echo "#define GLIBC_MINOR $OsLibcMinor" >> $OUTFILE
+		echo $OsLibcMinor
+	else
+		echo "Unknown libc found ($LIBC_FILE). Please update the create-localdecls script."
+		exit 1
+	fi
 
-if test "$VERSION" = 'libc.so.6' ; then
-	echo -n 'Checking glibc subversion... '
-	tmp="`ldd /bin/sh | grep libc.so 2> /dev/null`"
-	LibcPath=`expr "$tmp" : '[^/]*\(/[^ ]*\)'`
-	tmp="`strings $LibcPath | grep -i 'c library'`"
-	OsLibcMajor=`expr "$tmp" : '.* \([0-9][0-9]*\)'`
-	OsLibcMinor=`expr "$tmp" : '.* [0-9][0-9]*\.\([0-9][0-9]*\)'`
-	case "$OsLibcMajor" in
-	2)
-		# 2 is the glibc version
-		echo "JH OsLibcMinor is $OsLibcMinor"
-		case "$OsLibcMinor" in
-		0)
-			echo '#define GLIBC_MINOR 0' >> $OUTFILE
-			SUBVERSION='glibc-2.0' ;;
-		1)
-			echo '#define GLIBC_MINOR 1' >> $OUTFILE
-			SUBVERSION='glibc-2.1' ;;
-		2)
-			echo '#define GLIBC_MINOR 2' >> $OUTFILE
-			SUBVERSION='glibc-2.2' ;;
-		3)
-			echo '#define GLIBC_MINOR 3' >> $OUTFILE
-			SUBVERSION='glibc-2.3' ;;
-		4)
-			echo '#define GLIBC_MINOR 4' >> $OUTFILE
-			SUBVERSION='glibc-2.4' ;;
-		5)
-			echo '#define GLIBC_MINOR 5' >> $OUTFILE
-			SUBVERSION='glibc-2.5' ;;
-		6)
-			echo '#define GLIBC_MINOR 6' >> $OUTFILE
-			SUBVERSION='glibc-2.6' ;;
-		7)
-			echo '#define GLIBC_MINOR 7' >> $OUTFILE
-			SUBVERSION='glibc-2.7' ;;
-		8)
-			echo '#define GLIBC_MINOR 8' >> $OUTFILE
-			SUBVERSION='glibc-2.8' ;;
-		9)
-			echo '#define GLIBC_MINOR 9' >> $OUTFILE
-			SUBVERSION='glibc-2.9' ;;
-		10)
-			echo '#define GLIBC_MINOR 10' >> $OUTFILE
-			SUBVERSION='glibc-2.10' ;;
-		11)
-			echo '#define GLIBC_MINOR 11' >> $OUTFILE
-			SUBVERSION='glibc-2.11' ;;
-		12)
-			echo '#define GLIBC_MINOR 12' >> $OUTFILE
-			SUBVERSION='glibc-2.12' ;;
-		13)
-			echo '#define GLIBC_MINOR 13' >> $OUTFILE
-			SUBVERSION='glibc-2.13' ;;
-		*)
-			echo 'Treated as glibc >= 2.13 (finger crossed)'
-			echo '#define GLIBC_MINOR 13' >> $OUTFILE
-			SUBVERSION='glibc-2.13' ;;
-	        esac
-		;;
-	esac
 fi
 
 echo >> $OUTFILE
diff --git a/installwatch/installwatch.c b/installwatch/installwatch.c
index e13c9d8..8e6c616 100644
--- a/installwatch/installwatch.c
+++ b/installwatch/installwatch.c
@@ -351,7 +351,7 @@ static void initialize(void) {
 
 	#ifdef BROKEN_RTLD_NEXT
 //        	printf ("RTLD_LAZY");
-        	libc_handle = dlopen(LIBC_VERSION, RTLD_LAZY);
+        	libc_handle = dlopen(LIBC_FILE, RTLD_LAZY);
 	#else
  //       	printf ("RTLD_NEXT");
         	libc_handle = RTLD_NEXT;
diff --git a/installwatch/libcfiletest.c b/installwatch/libcfiletest.c
new file mode 100644
index 0000000..f6697cc
--- /dev/null
+++ b/installwatch/libcfiletest.c
@@ -0,0 +1,4 @@
+int main(void) {
+       return 0;
+}
+
diff --git a/installwatch/libctest.c b/installwatch/libctest.c
index 5fc92b5..c7ecac0 100644
--- a/installwatch/libctest.c
+++ b/installwatch/libctest.c
@@ -1,6 +1,10 @@
 /* Dummy program to check your libc version */
 
-int main(void) {
-	return 0;
+#include <stdio.h>
+#include <gnu/libc-version.h>
+
+int main (void) {
+   puts (gnu_get_libc_version ());
+   return 0;
 }
 
-- 
2.30.0