MACOSX_VERSION is not always defined during the build process

[jhpalmieri]

It should be, rather than having each package define it if it wants it. It is used here:

% git grep MACOSX_VERSION build/pkgs/
build/pkgs/curl/spkg-install.in:    if [ $MACOSX_VERSION -ge 16 ]; then
build/pkgs/curl/spkg-install.in:        echo "OS X 10.$[$MACOSX_VERSION-4] Building with clang and --with-darwinssl."
build/pkgs/pari/spkg-install.in:MACOSX_VERSION=`uname -r | awk -F. '{print $1}'`
build/pkgs/pari/spkg-install.in:if [ $MACOSX_VERSION -ge 14 ]; then
build/pkgs/psutil/spkg-install.in:if [ "$UNAME" = "Darwin" ] && [ $MACOSX_VERSION -ge 16 ]; then
build/pkgs/psutil/spkg-install.in:    echo "OS X 10.$[$MACOSX_VERSION-4] Building with clang."
build/pkgs/python3/spkg-build.in:    if [ $MACOSX_VERSION -ge 16 ]; then
build/pkgs/python3/spkg-build.in:        echo "OS X 10.$[$MACOSX_VERSION-4] Building with clang."
build/pkgs/r/spkg-install.in:    if [ $MACOSX_VERSION -ge 14 ]; then
build/pkgs/r/spkg-install.in:        echo "OS X 10.$[$MACOSX_VERSION-4] Configuring R without aqua support."
build/pkgs/r/spkg-install.in:    if [ $MACOSX_VERSION -ge 16 ]; then
build/pkgs/r/spkg-install.in:        echo "OS X 10.$[$MACOSX_VERSION-4] Building with clang."

It is defined in src/bin/sage-env (and also in build/pkgs/pari/spkg-install.in).

Component: build

Author: John Palmieri

Branch/Commit: 8df3d27

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/31186

[jhpalmieri]

Branch: u/jhpalmieri/MACOSX_VERSION

[jhpalmieri]

Commit: 8df3d27

[jhpalmieri]

New commits:

8df3d27

trac 31186: on OS X, always define MACOSX_VERSION in sage-env

[jhpalmieri]

Author: John Palmieri

[mkoeppe]

Reviewer: Matthias Koeppe

[jhpalmieri]

comment:5

Great, thanks!

[vbraun]

Changed branch from u/jhpalmieri/MACOSX_VERSION to 8df3d27