guile: Build with warnings.

* guile/src/Makefile.am (AM_CFLAGS) [HAVE_GCC]: Add -Wall -Wextra
  -Wno-unused-parameter.

diff --git a/guile/src/Makefile.am b/guile/src/Makefile.am
index 21efaa4e53d0be5cf375e4b7fa22804866986a58..d615e6da6a9f43c45dd24c034754bafd49bba1b4 100644 (file)
--- a/guile/src/Makefile.am
+++ b/guile/src/Makefile.am
@@ -61,10 +61,16 @@ AM_CPPFLAGS = \
 
 if HAVE_GCC
 
+AM_CFLAGS = -Wall -Wextra
+
 # Generated `.x' files and Guile's `scm_c_define_gsubr ()' require
 # `-Wno-strict-prototypes'.  This trick makes sure `-Wno-s-p' appears
 # after `-Ws-p'.
-AM_CFLAGS = -Wno-strict-prototypes
+AM_CFLAGS += -Wno-strict-prototypes
+
+# Functions generated from 'SCM_SMOB_PRINT' & co. typically have
+# unused parameters.
+AM_CFLAGS += -Wno-unused-parameter
 
 # The `-fgnu89-inline' option appeared in GCC 4.1.3.
 if HAVE_GCC_GNU89_INLINE_OPTION