From: Timo Heister <timo.heister@gmail.com>
Date: Tue, 14 Nov 2017 19:10:13 +0000 (-0500)
Subject: configure PETSc using python2
X-Git-Tag: v8.5.1~9^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F60%2Fhead;p=candi.git

configure PETSc using python2
---

diff --git a/deal.II-toolchain/packages/petsc.package b/deal.II-toolchain/packages/petsc.package
index b0eba72..37373f9 100644
--- a/deal.II-toolchain/packages/petsc.package
+++ b/deal.II-toolchain/packages/petsc.package
@@ -14,6 +14,19 @@ BUILDCHAIN=custom
 
 INSTALL_PATH=${INSTALL_PATH}/${EXTRACTSTO}
 
+# Note that PETSc ./configure currently does not support python3, but some
+# distros might ship with python3 as the default "python".  So select python2
+# or python2.7 if available, otherwise use python or what the user supplied in
+# PYTHON_INTERPRETER.
+if builtin command -v python2 --version > /dev/null; then
+  default PYTHON_INTERPRETER="python2"
+fi
+if builtin command -v python2.7 --version > /dev/null; then
+  default PYTHON_INTERPRETER="python2.7"
+fi
+default PYTHON_INTERPRETER="python"
+
+
 #########################################################################
 
 CONFOPTS="
@@ -76,7 +89,7 @@ package_specific_setup () {
     # make sure no other invalid PETSC_DIR is set:
     unset PETSC_DIR
     
-    ./configure --prefix=${INSTALL_PATH} ${CONFOPTS}
+    ${PYTHON_INTERPRETER} ./configure --prefix=${INSTALL_PATH} ${CONFOPTS}
     quit_if_fail "petsc ./configure failed"
     
     make all install