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-rw-r--r--m4/ax_cxx_compile_stdcxx.m42
-rw-r--r--m4/ax_pkg_swig.m44
-rw-r--r--m4/ax_python_devel.m44
3 files changed, 5 insertions, 5 deletions
diff --git a/m4/ax_cxx_compile_stdcxx.m4 b/m4/ax_cxx_compile_stdcxx.m4
index de3d0121..8f45b67b 100644
--- a/m4/ax_cxx_compile_stdcxx.m4
+++ b/m4/ax_cxx_compile_stdcxx.m4
@@ -1,5 +1,5 @@
# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
# ===========================================================================
#
# SYNOPSIS
diff --git a/m4/ax_pkg_swig.m4 b/m4/ax_pkg_swig.m4
index d836eec8..3b778067 100644
--- a/m4/ax_pkg_swig.m4
+++ b/m4/ax_pkg_swig.m4
@@ -1,5 +1,5 @@
# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_pkg_swig.html
+# https://www.gnu.org/software/autoconf-archive/ax_pkg_swig.html
# ===========================================================================
#
# SYNOPSIS
@@ -48,7 +48,7 @@
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <http://www.gnu.org/licenses/>.
+# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
diff --git a/m4/ax_python_devel.m4 b/m4/ax_python_devel.m4
index b990d5b3..55f0cfff 100644
--- a/m4/ax_python_devel.m4
+++ b/m4/ax_python_devel.m4
@@ -1,5 +1,5 @@
# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_python_devel.html
+# https://www.gnu.org/software/autoconf-archive/ax_python_devel.html
# ===========================================================================
#
# SYNOPSIS
@@ -52,7 +52,7 @@
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <http://www.gnu.org/licenses/>.
+# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure