Check for <sys/poll.h>.

[deliverable/binutils-gdb.git] / gdb / aclocal.m4

diff --git a/gdb/aclocal.m4 b/gdb/aclocal.m4
index 1a1183223c18ff1a173b80c76eb3d76c61e1598d..de9e2d5e5a0bec3f712f07735412748596ca5e1b 100644 (file)
--- a/gdb/aclocal.m4
+++ b/gdb/aclocal.m4
@@ -872,6 +872,39 @@ dnl    AC_SUBST(TIX_BUILD_INCLUDES)
 dnl    AC_SUBST(TIX_LIB_SPEC)
 ])
 
+# Add --enable-maintainer-mode option to configure.
+# From Jim Meyering
+
+# serial 1
+
+AC_DEFUN(AM_MAINTAINER_MODE,
+[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
+  dnl maintainer-mode is disabled by default
+  AC_ARG_ENABLE(maintainer-mode,
+[  --enable-maintainer-mode enable make rules and dependencies not useful
+                          (and sometimes confusing) to the casual installer],
+      USE_MAINTAINER_MODE=$enableval,
+      USE_MAINTAINER_MODE=no)
+  AC_MSG_RESULT($USE_MAINTAINER_MODE)
+  AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
+  MAINT=$MAINTAINER_MODE_TRUE
+  AC_SUBST(MAINT)dnl
+]
+)
+
+# Define a conditional.
+
+AC_DEFUN(AM_CONDITIONAL,
+[AC_SUBST($1_TRUE)
+AC_SUBST($1_FALSE)
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi])
+
 
 # serial 1