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-rw-r--r--configure.ac5
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index b2164b9e..2c08d790 100644
--- a/configure.ac
+++ b/configure.ac
@@ -144,6 +144,11 @@ if test "x$internaldownload" = "xyes" ; then
# Check for a download library if it was actually requested
AC_CHECK_LIB([fetch], [fetchParseURL], ,
AC_MSG_ERROR([libfetch is needed to compile with internal download support]) )
+ # Check if libfetch supports conditional GET
+ # (version >=2.21, struct url has member last_modified)
+ AC_CHECK_MEMBER(struct url.last_modified, ,
+ AC_MSG_ERROR([libfetch must be version 2.21 or greater]),
+ [#include <fetch.h>] )
else
AC_MSG_RESULT(no)
fi