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###############################################################################
#
# Find MPFR headers and libraries.
#
# Author: Maxime Arthaud
#
# Contact: ikos@lists.nasa.gov
#
# Notices:
#
# Copyright (c) 2018-2019 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Disclaimers:
#
# No Warranty: THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF
# ANY KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED
# TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO SPECIFICATIONS,
# ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
# OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL BE
# ERROR FREE, OR ANY WARRANTY THAT DOCUMENTATION, IF PROVIDED, WILL CONFORM TO
# THE SUBJECT SOFTWARE. THIS AGREEMENT DOES NOT, IN ANY MANNER, CONSTITUTE AN
# ENDORSEMENT BY GOVERNMENT AGENCY OR ANY PRIOR RECIPIENT OF ANY RESULTS,
# RESULTING DESIGNS, HARDWARE, SOFTWARE PRODUCTS OR ANY OTHER APPLICATIONS
# RESULTING FROM USE OF THE SUBJECT SOFTWARE. FURTHER, GOVERNMENT AGENCY
# DISCLAIMS ALL WARRANTIES AND LIABILITIES REGARDING THIRD-PARTY SOFTWARE,
# IF PRESENT IN THE ORIGINAL SOFTWARE, AND DISTRIBUTES IT "AS IS."
#
# Waiver and Indemnity: RECIPIENT AGREES TO WAIVE ANY AND ALL CLAIMS AGAINST
# THE UNITED STATES GOVERNMENT, ITS CONTRACTORS AND SUBCONTRACTORS, AS WELL
# AS ANY PRIOR RECIPIENT. IF RECIPIENT'S USE OF THE SUBJECT SOFTWARE RESULTS
# IN ANY LIABILITIES, DEMANDS, DAMAGES, EXPENSES OR LOSSES ARISING FROM SUCH
# USE, INCLUDING ANY DAMAGES FROM PRODUCTS BASED ON, OR RESULTING FROM,
# RECIPIENT'S USE OF THE SUBJECT SOFTWARE, RECIPIENT SHALL INDEMNIFY AND HOLD
# HARMLESS THE UNITED STATES GOVERNMENT, ITS CONTRACTORS AND SUBCONTRACTORS,
# AS WELL AS ANY PRIOR RECIPIENT, TO THE EXTENT PERMITTED BY LAW.
# RECIPIENT'S SOLE REMEDY FOR ANY SUCH MATTER SHALL BE THE IMMEDIATE,
# UNILATERAL TERMINATION OF THIS AGREEMENT.
#
###############################################################################
if (NOT MPFR_FOUND)
set(MPFR_ROOT "" CACHE PATH "Path to mpfr install directory")
find_package(GMP)
find_path(MPFR_INCLUDE_DIR
NAMES mpfr.h
HINTS "${MPFR_ROOT}/include"
DOC "Path to mpfr include directory"
)
find_library(MPFR_LIB
NAMES mpfr
HINTS "${MPFR_ROOT}/lib"
DOC "Path to mpfr library"
)
if (MPFR_INCLUDE_DIR AND MPFR_LIB AND GMP_FOUND)
file(WRITE "${PROJECT_BINARY_DIR}/FindMPFRVersion.c" "
#include <stdio.h>
#include <mpfr.h>
int main() {
mpfr_t x;
mpfr_init_set_ui(x, 2, MPFR_RNDN);
printf(\"%s\", mpfr_get_version());
return 0;
}
")
try_run(
RUN_RESULT
COMPILE_RESULT
"${PROJECT_BINARY_DIR}"
"${PROJECT_BINARY_DIR}/FindMPFRVersion.c"
CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES:STRING=${MPFR_INCLUDE_DIR};${GMP_INCLUDE_DIR}"
"-DLINK_LIBRARIES:STRING=${MPFR_LIB};${GMP_LIB}"
COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT
RUN_OUTPUT_VARIABLE MPFR_VERSION
)
if (NOT COMPILE_RESULT)
message(FATAL_ERROR "error when trying to compile a program with MPFR:\n${COMPILE_OUTPUT}")
endif()
if (RUN_RESULT)
message(FATAL_ERROR "error when running a program linked with MPFR:\n${MPFR_VERSION}")
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MPFR
REQUIRED_VARS
MPFR_INCLUDE_DIR
MPFR_LIB
MPFR_VERSION
GMP_FOUND
VERSION_VAR
MPFR_VERSION
FAIL_MESSAGE
"Could NOT find MPFR. Please provide -DMPFR_ROOT=/path/to/mpfr")
endif()
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