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lockdev: fix build with the musl C library

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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>
This commit is contained in:
Thomas Petazzoni 2015-12-22 21:39:17 +01:00
parent 2badd96d9e
commit c61e97a4d9
1 changed files with 6 additions and 0 deletions
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6
package/lockdev/lockdev.mk
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@ -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