kbuild: improve check-symlink

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Makefile

diff --git a/Makefile b/Makefile
index e9c5d47f31cdb42f8b98fc28065446a85fe7d2f6..ffac7126c944b6db510aec55fd9d794de22dd8b6 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -536,7 +536,7 @@ KBUILD_CFLAGS       += -g
 KBUILD_AFLAGS  += -gdwarf-2
 endif
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 KBUILD_CFLAGS  += -pg
 endif
 
@@ -961,6 +961,7 @@ export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
 
 # The asm symlink changes when $(ARCH) changes.
 # Detect this and ask user to run make mrproper
+# If asm is a stale symlink (point to dir that does not exist) remove it
 define check-symlink
        set -e;                                                            \
        if [ -L include/asm ]; then                                        \
@@ -970,6 +971,10 @@ define check-symlink
                        echo "       set ARCH or save .config and run 'make mrproper' to fix it";             \
                        exit 1;                                            \
                fi;                                                        \
+               test -e $$asmlink || rm include/asm;                       \
+       elif [ -d include/asm ]; then                                      \
+               echo "ERROR: $@ is a directory but a symlink was expected";\
+               exit 1;                                                    \
        fi
 endef