pv: fix build issue with some toolchains

While 'pv' uses autoconf, it does not use automake for its
makefiles. It uses $(LD) $(LDFLAGS) to achieve partial linking, but
using 'ld' directly doesn't work well with some toolchain
configuration, as the ld default emulation may not necessarily be the
correct one. By passing custom values for LD and LDFLAGS, we ensure
that 'gcc' is used to do these partial linking steps.

Fixes the following build failures (x86-64 and mips64) :

  http://autobuild.buildroot.org/results/9ac/9aca276a220ad1460e5b32bd042dd4c93649baf3/build-end.log
  http://autobuild.buildroot.org/results/910/91044c01dcc3c4150aa6e74f5964fff27b9dac79/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/package/pv/pv.mk b/package/pv/pv.mk
index a8b2651709fa948bc12dd5f769c76cd50acd03e5..00502d3b4e39833ee8802d74b9528d57a9382b3b 100644 (file)
--- a/package/pv/pv.mk
+++ b/package/pv/pv.mk
@@ -9,6 +9,15 @@ PV_SOURCE = pv-$(PV_VERSION).tar.bz2
 PV_SITE = http://www.ivarch.com/programs/sources
 PV_LICENSE = Artistic-2.0
 PV_LICENSE_FILES = doc/COPYING
-PV_MAKE_OPT = LD=$(TARGET_LD) # otherwise 'ld' is used
+
+# While 'pv' uses autoconf, it does not use automake for its
+# makefiles. It uses $(LD) $(LDFLAGS) to achieve partial linking, but
+# using 'ld' directly doesn't work well with some toolchain
+# configuration, as the ld default emulation may not necessarily be
+# the correct one. By passing the below values for LD and LDFLAGS, we
+# ensure that 'gcc' is used to do these partial linking steps.
+PV_MAKE_OPT = \
+       LD=$(TARGET_CC) \
+       LDFLAGS="-Wl,-r -nostdlib"
 
 $(eval $(autotools-package))