Merge pull request easybuilders#3366 from bedroge/openfoam_cgal

make sure that OpenFOAM's wmake can find MPFR and GMP if CGAL >= 5.0 (header-only) is used

easybuild/easyblocks/o/openfoam.py

@@ -41,14 +41,15 @@
 import shutil
 import stat
 import tempfile
+import textwrap
 from easybuild.tools import LooseVersion
 
 import easybuild.tools.environment as env
 import easybuild.tools.toolchain as toolchain
 from easybuild.easyblocks.generic.cmakemake import setup_cmake_env
 from easybuild.framework.easyblock import EasyBlock
 from easybuild.tools.build_log import EasyBuildError
-from easybuild.tools.filetools import adjust_permissions, apply_regex_substitutions, mkdir
+from easybuild.tools.filetools import adjust_permissions, apply_regex_substitutions, mkdir, write_file
 from easybuild.tools.modules import get_software_root, get_software_version
 from easybuild.tools.run import run_cmd, run_cmd_qa
 from easybuild.tools.systemtools import get_shared_lib_ext, get_cpu_architecture, AARCH64, POWER
@@ -293,6 +294,23 @@ def configure_step(self):
                     else:
                         env.setvar("%s_ROOT" % depend.upper(), dependloc)
 
+            if get_software_root('CGAL') and LooseVersion(get_software_version('CGAL')) >= LooseVersion('5.0'):
+                # CGAL >= 5.x is header-only, but when using it OpenFOAM still needs MPFR.
+                # It may fail to find it, so inject the right settings and paths into the "have_cgal" script.
+                have_cgal_script = os.path.join(self.builddir, self.openfoamdir, 'wmake', 'scripts', 'have_cgal')
+                if get_software_root('MPFR') and os.path.exists(have_cgal_script):
+                    eb_cgal_config = textwrap.dedent('''
+                    # Injected by EasyBuild
+                    HAVE_CGAL=true
+                    HAVE_MPFR=true
+                    CGAL_FLAVOUR=header
+                    CGAL_INC_DIR=${EBROOTCGAL}/include
+                    CGAL_LIB_DIR=${EBROOTCGAL}/lib
+                    MPFR_INC_DIR=${EBROOTMPFR}/include
+                    MPFR_LIB_DIR=${EBROOTMPFR}/lib
+                    ''')
+                    write_file(have_cgal_script, eb_cgal_config, append=True)
+
     def build_step(self):
         """Build OpenFOAM using make after sourcing script to set environment."""