+#
+# This file is part of the GROMACS molecular simulation package.
+#
+# Copyright (c) 2014, by the GROMACS development team, led by
+# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
+# and including many others, as listed in the AUTHORS file in the
+# top-level source directory and at http://www.gromacs.org.
+#
+# GROMACS is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation; either version 2.1
+# of the License, or (at your option) any later version.
+#
+# GROMACS is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with GROMACS; if not, see
+# http://www.gnu.org/licenses, or write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# If you want to redistribute modifications to GROMACS, please
+# consider that scientific software is very special. Version
+# control is crucial - bugs must be traceable. We will be happy to
+# consider code for inclusion in the official distribution, but
+# derived work must not be called official GROMACS. Details are found
+# in the README & COPYING files - if they are missing, get the
+# official version at http://www.gromacs.org.
+#
+# To help us fund GROMACS development, we humbly ask that you cite
+# the research papers on the package. Check out http://www.gromacs.org.
+
+if (NOT DEFINED GMX_EXECUTABLE OR NOT DEFINED SOURCE_DIR)
+ message(FATAL_ERROR "Required input parameter not set")
+endif()
+
+file(MAKE_DIRECTORY man1)
+file(MAKE_DIRECTORY man7)
+file(COPY ${SOURCE_DIR}/man7/gromacs.7.in DESTINATION man7/)
+execute_process(
+ COMMAND ${GMX_EXECUTABLE} -quiet help -export man
+ RESULT_VARIABLE exitcode)
+if (exitcode)
+ # Ensure that no partial output is left behind.
+ file(REMOVE_RECURSE man1)
+ file(REMOVE man7/gromacs.7)
+ if (ERRORS_ARE_FATAL)
+ message(FATAL_ERROR
+ "Failed to generate man pages. "
+ "Set GMX_BUILD_HELP=OFF if you want to skip them.\n"
+ "Error/exit code: ${exitcode}")
+ else()
+ message(
+ "Failed to generate man pages, will build GROMACS without. "
+ "Set GMX_BUILD_HELP=OFF if you want to skip this notification and "
+ "warnings during installation.")
+ endif()
+endif()