Reveal guile-tools's inner simplicity...

[bpt/guile.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index c341148..146b77b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -65,6 +65,9 @@ AC_PROG_AWK
 
 dnl Gnulib.
 gl_INIT
+dnl FIXME: remove me and the acinclude.m4 code when clock-gettime is
+dnl LGPL-compatible and can be imported normally.
+gl_CLOCK_TIME
 
 AC_PROG_CC_C89
 
@@ -1191,6 +1194,70 @@ AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,
 GUILE_STRUCT_UTIMBUF
 
 
+#--------------------------------------------------------------------
+#
+# What values do the iconv error handlers have?
+#
+# The only place that we need iconv in our public interfaces is for
+# the error handlers, which are just ints.  So we weaken our
+# dependency by looking up those values at configure-time.
+#--------------------------------------------------------------------
+SCM_I_GSC_ICONVEH_ERROR=0
+SCM_I_GSC_ICONVEH_QUESTION_MARK=1
+SCM_I_GSC_ICONVEH_ESCAPE_SEQUENCE=2
+AC_MSG_CHECKING([for iconveh_error])
+AC_RUN_IFELSE([AC_LANG_SOURCE(
+[AC_INCLUDES_DEFAULT
+#include <uniconv.h>
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    printf ("%d\n", (int)iconveh_error);
+  return 0;
+}])],
+              [SCM_I_GSC_ICONVEH_ERROR=`./conftest$EXEEXT pretty-please`
+                AC_MSG_RESULT([$SCM_I_GSC_ICONVEH_ERROR])],
+              [AC_MSG_FAILURE([failed to get iconveh_error])],
+              [AC_MSG_WARN([assuming $SCM_I_GSC_ICONVEH_ERROR for cross-compilation])])
+
+AC_MSG_CHECKING([for iconveh_question_mark])
+AC_RUN_IFELSE([AC_LANG_SOURCE(
+[AC_INCLUDES_DEFAULT
+#include <uniconv.h>
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    printf ("%d\n", (int)iconveh_question_mark);
+  return 0;
+}])],
+              [SCM_I_GSC_ICONVEH_QUESTION_MARK=`./conftest$EXEEXT pretty-please`
+                AC_MSG_RESULT([$SCM_I_GSC_ICONVEH_QUESTION_MARK])],
+              [AC_MSG_FAILURE([failed to get iconveh_question_mark])],
+              [AC_MSG_WARN([assuming $SCM_I_GSC_ICONVEH_QUESTION_MARK for cross-compilation])])
+
+AC_MSG_CHECKING([for iconveh_escape_sequence])
+AC_RUN_IFELSE([AC_LANG_SOURCE(
+[AC_INCLUDES_DEFAULT
+#include <uniconv.h>
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    printf ("%d\n", (int)iconveh_escape_sequence);
+  return 0;
+}])],
+              [SCM_I_GSC_ICONVEH_ESCAPE_SEQUENCE=`./conftest$EXEEXT pretty-please`
+                AC_MSG_RESULT([$SCM_I_GSC_ICONVEH_ESCAPE_SEQUENCE])],
+              [AC_MSG_FAILURE([failed to get iconveh_escape_sequence])],
+              [AC_MSG_WARN([assuming $SCM_I_GSC_ICONVEH_ESCAPE_SEQUENCE for cross-compilation])])
+
+AC_SUBST([SCM_I_GSC_ICONVEH_ERROR])
+AC_SUBST([SCM_I_GSC_ICONVEH_QUESTION_MARK])
+AC_SUBST([SCM_I_GSC_ICONVEH_ESCAPE_SEQUENCE])
+
+
 #--------------------------------------------------------------------
 #
 # Which way does the stack grow?