diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-06 10:06:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-06 10:06:47 -0700 |
| commit | b304441c6f3a5cb5ea80b9a719d2851544f348d6 (patch) | |
| tree | 3a46971b037eec332fe2b7c6053f00a37c6016bc /arch | |
| parent | f7ddc2b6cd880a259db338925d03bdc01f1d26c1 (diff) | |
| parent | 18642a57df02a044b91219d3176128996ddc81a5 (diff) | |
Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, vdso: Don't quote $nm in the script for checking vdso references
x86, vdso: Error out if the vdso contains external references
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/vdso/Makefile | 3 | ||||
| -rwxr-xr-x | arch/x86/vdso/checkundef.sh | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index 6b4ffedb93c9..4a2afa1bac51 100644 --- a/arch/x86/vdso/Makefile +++ b/arch/x86/vdso/Makefile @@ -120,7 +120,8 @@ $(obj)/vdso32-syms.lds: $(vdso32.so-y:%=$(obj)/vdso32-%-syms.lds) FORCE quiet_cmd_vdso = VDSO $@ cmd_vdso = $(CC) -nostdlib -o $@ \ $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \ - -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) + -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \ + sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@' VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) GCOV_PROFILE := n diff --git a/arch/x86/vdso/checkundef.sh b/arch/x86/vdso/checkundef.sh new file mode 100755 index 000000000000..7ee90a9b549d --- /dev/null +++ b/arch/x86/vdso/checkundef.sh @@ -0,0 +1,10 @@ +#!/bin/sh +nm="$1" +file="$2" +$nm "$file" | grep '^ *U' > /dev/null 2>&1 +if [ $? -eq 1 ]; then + exit 0 +else + echo "$file: undefined symbols found" >&2 + exit 1 +fi |