diff --git a/config/ChangeLog b/config/ChangeLog
index b11c920b8..2bf1f1e37 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2007-06-04  Olivier Hainque  <hainque@adacore.com>
+
+	* mh-ppc-aix: Add default ADAFLAGS to BOOT_ADAFLAGS.
+
 2007-05-27  Paolo Bonzini  <bonzini@gnu.org>
 
 	* confsubdir.m4: Move here from newlib.
diff --git a/config/mh-ppc-aix b/config/mh-ppc-aix
index f2bc76a0c..a56985fa9 100644
--- a/config/mh-ppc-aix
+++ b/config/mh-ppc-aix
@@ -1,8 +1,9 @@
 
-# Compile Ada files with minimal-toc.  The primary focus is gnatlib, so
-# that the library does not use nearly the entire TOC of applications
-# until gnatlib is built as a shared library on AIX.  Compiling the
-# compiler with -mminimal-toc does not cause any harm.
-BOOT_ADAFLAGS = -mminimal-toc
+# Compile Ada files with minimal-toc in addition to the default flags (at
+# least -gnatg is required to compile language defined units).  The primary
+# focus is gnatlib, so that the library does not use nearly the entire TOC of
+# applications until gnatlib is built as a shared library on AIX.  Compiling
+# the compiler with -mminimal-toc does not cause any harm.
+BOOT_ADAFLAGS = -gnatapg -mminimal-toc
 BOOT_LDFLAGS = -Wl,-bbigtoc
 LDFLAGS = `case $(CC) in *gcc*) echo -Wl,-bbigtoc ;; esac;`