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-rw-r--r--configure.ac6
1 files changed, 6 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 2846184..a831f34 100644
--- a/configure.ac
+++ b/configure.ac
@@ -114,6 +114,12 @@ AC_SUBST(CWARNFLAGS)
GCC_CHECK_VISIBILITY()
+# htmldir is not defined prior to autoconf 2.59c, so on earlier versions
+# set an equivalent value.
+AC_PREREQ([2.59c], [], [AC_SUBST([htmldir], [m4_ifset([AC_PACKAGE_TARNAME],
+ ['${datadir}/doc/${PACKAGE_TARNAME}'],
+ ['${datadir}/doc/${PACKAGE}'])
+])])
AM_CHECK_DOXYGEN()
AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile doc/Makefile])