[Buildroot] [PATCHv2] package/libostree: enable introspection

Yann E. MORIN yann.morin.1998 at free.fr
Sun Mar 22 09:28:54 UTC 2020


libostree build fails when introspection is enabled:

    ./.libs/libostree-1.so: error adding symbols: File in wrong format
    collect2: error: ld returned 1 exit status
    src/libostree/ostree-repo-deprecated.h:28: Warning: OSTree: symbol='G_GNUC_DEPRECATED_FOR': Skipping foreign symbol from namespace Gio
    linking of temporary binary failed: Command '['/bin/bash', './libtool', '--mode=link', '--tag=CC', '--silent', 'gcc', [...] ]' returned non-zero exit status 1.

This is because the build system fir libiostree hard-codes CC=gcc when
calling the GOI scanner, which obviously causes build failures when in
cross-compilation.

In d264351cfcca (package/libostree: disable introspection), we just
papered over the problem by forcibly disabling introspection altogether.

Turns out the fix is realatively simple: we can just override the
INTROSPECTION_SCANNER_ENV variable when calling make, which will revert
to the behaviour we expect: to use the cross-compiler in the GOI scanner
wrapper.

Thanks to Adam for pointing out at INTROSPECTION_SCANNER_ENV in the
first place. :-)

Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
Cc: Marcus Folkesson <marcus.folkesson at gmail.com>
Cc: Adam Duskett <aduskett at gmail.com>
Cc: Fabrice Fontaine <fontaine.fabrice at gmail.com>

---
Note: this is an alternate proposal to replace a previous series by
Adam:
    https://patchwork.ozlabs.org/project/buildroot/list/?series=165777
---
 package/libostree/libostree.mk | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/package/libostree/libostree.mk b/package/libostree/libostree.mk
index ff763b20f9..aed97b70cc 100644
--- a/package/libostree/libostree.mk
+++ b/package/libostree/libostree.mk
@@ -21,9 +21,16 @@ LIBOSTREE_CONF_OPTS += \
 	--disable-gtk-doc \
 	--disable-gtk-doc-html \
 	--disable-gtk-doc-pdf \
-	--disable-introspection \
 	--disable-man
 
+ifeq ($(BR2_PACKAGE_GOBJECT_INTROSPECTION),y)
+LIBOSTREE_DEPENDENCIES += gobject-introspection
+LIBOSTREE_CONF_OPTS += --enable-introspection
+LIBOSTREE_MAKE_OPTS = INTROSPECTION_SCANNER_ENV=
+else
+LIBOSTREE_CONF_OPTS += --disable-introspection
+endif
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 LIBOSTREE_CONF_OPTS += --with-openssl
 LIBOSTREE_DEPENDENCIES += openssl
-- 
2.20.1



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