X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=configure.ac;h=24f4d0dd69963610d5c018a8a346dd28d3cc1584;hp=8e3f7b3cd043d35919d7aaa03bf902d353cd22d4;hb=bceb7d6de7ddef3c2f3528eb76717cf6a2690cd6;hpb=f4f4df01e7f959b6a2d76b58a815a5a3feb0bb67

diff --git a/configure.ac b/configure.ac
index 8e3f7b3cd..24f4d0dd6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -232,7 +232,29 @@ AC_CHECK_SIZEOF(rlim_t,,[
        #include <sys/resource.h>
 ])
 
- # ------------------------------------------------------------------------------
+GPERF_TEST="$(echo foo,bar | ${GPERF} -L ANSI-C)"
+
+AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM([
+                #include <string.h>
+                const char * in_word_set(const char *, size_t);
+                $GPERF_TEST]
+        )],
+        [GPERF_LEN_TYPE=size_t],
+        [AC_COMPILE_IFELSE(
+                [AC_LANG_PROGRAM([
+                        #include <string.h>
+                        const char * in_word_set(const char *, unsigned);
+                        $GPERF_TEST]
+                )],
+                [GPERF_LEN_TYPE=unsigned],
+                [AC_MSG_ERROR([** unable to determine gperf len type])]
+        )]
+)
+
+AC_DEFINE_UNQUOTED([GPERF_LEN_TYPE], [$GPERF_LEN_TYPE], [gperf len type])
+
+# ------------------------------------------------------------------------------
 # we use python to build the man page index
 have_python=no
 AC_ARG_WITH([python],