Start working on removing those .la files en masse.

chromeos/config/make.conf.common-target

Index: chromeos/config/make.conf.common-target
diff --git a/chromeos/config/make.conf.common-target b/chromeos/config/make.conf.common-target
index 86a06ed6f68acdcc71395488e5778c974a427bc8..e554ce2f0f3d5e8b862a9f4cf4d1d252b2817522 100644
--- a/chromeos/config/make.conf.common-target
+++ b/chromeos/config/make.conf.common-target
@@ -70,5 +70,23 @@ ac_cv_func_wait3_rusage=yes
 # Native language support is handled inside Chrome itself.
 LINGUAS="en"
 
+# avoid removing libltdl.la as it is required by some macro files
+INSTALL_MASK="
+/usr/lib/lib[0-9]*.la
+/usr/lib/lib[a-k]*.la
+/usr/lib/lib[m-z]*.la
+/usr/lib/libl[0-9]*.la
+/usr/lib/libl[a-s]*.la
+/usr/lib/libl[u-z]*.la
+/usr/lib/liblt[0-9]*.la
+/usr/lib/liblt[a-c]*.la
+/usr/lib/liblt[e-z]*.la
+/usr/lib/libltd[0-9]*.la
+/usr/lib/libltd[a-k]*.la
+/usr/lib/libltd[m-z]*.la
+/usr/lib/libltdl[0-9]*.la
+/usr/lib/libltdl[a-z]*.la
+"
+
 # Allow the user to override or define additional settings.
 source make.conf.user