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# cmake/TestSignalType.cmake
#
# Test for the return type of signal defined in <signal.h>
#
# Copyright (C) 2006 Andrew Ross
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; version 2 of the License.
#
# PLplot 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 Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with the file PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# If signal.h defines signal as returning a pointer to a function
# returning void RETSIGTYPE is defined as void. Otherwise RETSIGTYPE is
# defined as int.
IF(NOT DEFINED CMAKE_TEST_SIGNAL_TYPE)
MESSAGE(STATUS "Check for signal return type in <signal.h>")
TRY_COMPILE(CMAKE_TEST_SIGNAL_TYPE
${CMAKE_BINARY_DIR}
${CMAKE_CURRENT_LIST_DIR}/TestSignalType.c
OUTPUT_VARIABLE OUTPUT)
IF (CMAKE_TEST_SIGNAL_TYPE)
MESSAGE(STATUS "Check for signal handler return type type void - found")
SET (RETSIGTYPE void CACHE INTERNAL
"Signal return type")
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
"Determining if signal handler return type is void passed with "
"the following output:\n${OUTPUT}\n\n")
ELSE (CMAKE_TEST_SIGNAL_TYPE)
MESSAGE(STATUS "Check for signal handler return type type void - not found")
SET (RETSIGTYPE int CACHE INTERNAL
"Signal return type")
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log
"Determining if signal handler return type is void failed with "
"the following output:\n${OUTPUT}\n\n")
ENDIF (CMAKE_TEST_SIGNAL_TYPE)
ENDIF(NOT DEFINED CMAKE_TEST_SIGNAL_TYPE)
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