ld.hugetlbfs: pick an emulation if -m is not present

If -m is not passed on command line $EMU ends up empty and as result HPAGE_SIZE and SLICE_SIZE are left uninitialized. Try environment variable LDEMULATION and if it's not defined pick first from "Supported emulations" list of ld -V. Signed-off-by: Jan Stancek <[email protected]> Signed-off-by: Eric B Munson <[email protected]>
nareshkamboju · Feb 16, 2017 · a979e0b · a979e0b
1 parent 26c6b9b
commit a979e0b
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/ld.hugetlbfs b/ld.hugetlbfs
@@ -81,6 +81,17 @@ if [ -n "$HTLB_LINK" ]; then
     HTLBOPTS="-T${HUGETLB_LDSCRIPT_PATH}/${LDSCRIPT}"
 fi
 
+# if -m is not present on command line
+if [ -z "$EMU" ]; then
+	if [ -n "$LDEMULATION" ]; then
+		# try env. variable
+		EMU="$LDEMULATION"
+	else
+		# pick first supported
+		EMU="$(ld -V | sed -n '/Supported emulations/{n;p}' | tr -d ' ')"
+	fi
+fi
+
 MB=$((1024*1024))
 case "$EMU" in
 elf32ppclinux|elf64ppc)	HPAGE_SIZE=$((16*$MB)) SLICE_SIZE=$((256*$MB)) ;;