Commit c61e97a4 authored Dec 22, 2015 by Thomas Petazzoni

lockdev: fix build with the musl C library

When the musl C library is used, the __GNU_LIBRARY__ symbol is not
defined, so the lockdev code doesn't know what to do. To work around
this, we explicitly pass __GNU_LIBRARY__ when building with musl, this
musl provides what's needed for lockdev to build, as if we were
building against glibc.

Fixes:

  http://autobuild.buildroot.org/results/9db/9db4ab40955d3af0027e141245d73ee6c614fb1f/



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

parent 2badd96d

package/lockdev/lockdev.mk

+6 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,12 @@ LOCKDEV_BUILD_ARGS = shared
		LOCKDEV_INSTALL_ARGS = install_run
		endif

		# Make the code believe we are using a C library compatible with
		# glibc, which for the purpose of lockdev is actually true.
		ifeq ($(BR2_TOOLCHAIN_USES_MUSL),y)
		LOCKDEV_BUILD_ARGS += CFLAGS="$(TARGET_CFLAGS) -D__GNU_LIBRARY__"
		endif

		ifeq ($(BR2_SHARED_STATIC_LIBS)$(BR2_SHARED_LIBS),y)
		define LOCKDEV_CREATE_LINKS_STAGING
		ln -sf liblockdev.$(LOCKDEV_VERSION).so $(STAGING_DIR)/usr/lib/liblockdev.so