Remove Cygwin distro support

.github/workflows/extract-sage-local.sh

@@ -8,7 +8,6 @@ fi
 # Show all tar files
 ls -l $*
 
-# Cygwin note: We specifically use the cygwin tar so that symlinks are saved/restored correctly on Windows.
 for a in $*; do
     echo Extracting $a
     (cd / && tar xf -) < $a
@@ -33,10 +32,3 @@ fi
 
 # Show how we are doing on free space.
 df -h
-
-# Rebase!
-case "$(uname)" in
-    CYGWIN*)
-        exec src/bin/sage-rebase.sh --all "$SAGE_LOCAL"
-        ;;
-esac

build/bin/sage-apply-patches

@@ -10,8 +10,8 @@
 # the root of the package source.
 #
 # An optional patch subdirectory may be specified with the -d flag.
-# For example `sage-apply-patches -d cygwin` applies only those
-# patches under <patch-dir>/cygwin.
+# For example `sage-apply-patches -d macos` applies only those
+# patches under <patch-dir>/macos.
 #
 # The -p<num> arg is the argument accepted by the `patch` command,
 # and overrides the default -p1

build/bin/sage-bootstrap-python

@@ -36,9 +36,7 @@ SAGE_ORIG_PATH=${NEW_PATH%%':'}
 # a defect of sage_bootstrap on macOS regarding SSL URLs.
 
 # Trac #30177: Also check for hashlib.sha1 to guard against broken python2
-# from old homebrew installations.  Also check whether the current directory
-# is accessible by this python; this is to guard on Cygwin against Pythons
-# installed somewhere else in Windows.
+# from old homebrew installations.
 
 # Trac #29285: Do not accept pythons that manipulate PATH, such as
 # the shims provided by pyenv.
@@ -60,7 +58,7 @@ PYTHONS="python python3 python3.12 python3.11 python3.10 python3.9 python3.8 pyt
 for PY in $PYTHONS; do
     PYTHON="$(PATH="$SAGE_ORIG_PATH" command -v $PY)"
     if [ -n "$PYTHON" ]; then
-        if CHECK_PATH="$PATH" "$PYTHON" -c "import argparse; import urllib; from hashlib import sha1; from ssl import HAS_SNI; assert HAS_SNI; from os import listdir, environ; listdir(\"$(pwd)\"); assert environ[\"PATH\"] == environ[\"CHECK_PATH\"];" 2>/dev/null; then
+        if CHECK_PATH="$PATH" "$PYTHON" -c "import argparse; import urllib; from hashlib import sha1; from ssl import HAS_SNI; assert HAS_SNI; from os import environ; assert environ[\"PATH\"] == environ[\"CHECK_PATH\"];" 2>/dev/null; then
             exec "$PYTHON" "$@"
         fi
     fi
@@ -69,7 +67,7 @@ done
 for PY in $PYTHONS; do
     PYTHON="$(PATH="$SAGE_ORIG_PATH" command -v $PY)"
     if [ -n "$PYTHON" ]; then
-        if CHECK_PATH="$PATH" "$PYTHON" -c "import argparse; import urllib; from hashlib import sha1; from os import listdir, environ; listdir(\"$(pwd)\"); assert environ[\"PATH\"] == environ[\"CHECK_PATH\"];" 2>/dev/null; then
+        if CHECK_PATH="$PATH" "$PYTHON" -c "import argparse; import urllib; from hashlib import sha1; from os import environ; assert environ[\"PATH\"] == environ[\"CHECK_PATH\"];" 2>/dev/null; then
             exec "$PYTHON" "$@"
         fi
     fi

build/bin/sage-dist-helpers

@@ -170,16 +170,9 @@ sdh_configure() {
     if [ -z "$CONFIG_SHELL" ]; then
         export CONFIG_SHELL=`command -v bash`
     fi
-    if [ "$UNAME" = "CYGWIN" ]; then
-        # TODO: To use --disable-static for all packages on Cygwin, need
-        # #30814: Cygwin: Fix remaining packages to build shared libraries, using AM_LDFLAGS=-no-undefined
-        DISABLE_STATIC=
-    else
-        DISABLE_STATIC=--disable-static
-    fi
-    ./configure --prefix="$SAGE_INST_LOCAL" --libdir="$SAGE_INST_LOCAL/lib" $DISABLE_STATIC --disable-maintainer-mode --disable-dependency-tracking "$@"
+    ./configure --prefix="$SAGE_INST_LOCAL" --libdir="$SAGE_INST_LOCAL/lib" --disable-static --disable-maintainer-mode --disable-dependency-tracking "$@"
     if [ $? -ne 0 ]; then # perhaps it is a non-autoconf'd project
-      ./configure --prefix="$SAGE_INST_LOCAL" --libdir="$SAGE_INST_LOCAL/lib" $DISABLE_STATIC "$@"
+      ./configure --prefix="$SAGE_INST_LOCAL" --libdir="$SAGE_INST_LOCAL/lib" --disable-static "$@"
       if [ $? -ne 0 ]; then
         if [ -f "$(pwd)/config.log" ]; then
             sdh_die <<_EOF_

build/bin/sage-spkg

@@ -584,26 +584,6 @@ export https_proxy=$http_proxy
 export ftp_proxy=$http_proxy
 export rsync_proxy=$http_proxy
 
-##################################################################
-# We need to run sage-rebase.sh for each package installed, but it
-# can be dangerous to do this while other packages are installing
-# so we need to use a lock to manage when rebase is allowed to
-# run.  Because of this, if multiple sage-spkg runs are waiting on
-# the rebase lock, we can end up with multiple consecutive rebase
-# calls that are redundant, but I don't see an obvious way around
-# that.  This also unfortunately slows down parallel builds since
-# all packages will eventually need to wait for this lock, but
-# again there's no simple way around that.
-##################################################################
-
-if [ "$UNAME" = "CYGWIN" ]; then
-    # This is a global lock - so we use SAGE_LOCAL, not SAGE_INST_LOCAL.
-    if [ ! -d "$SAGE_LOCAL/var/lock" ]; then
-        mkdir -p "$SAGE_LOCAL/var/lock"
-    fi
-    exec 200>"$SAGE_LOCAL/var/lock/rebase.lock"
-    sage-flock -s $lock_type 200
-fi
 
 ##################################################################
 # Actually install
@@ -738,19 +718,6 @@ if [ -f spkg-postinst ]; then
     fi
 fi
 
-if [ "$UNAME" = "CYGWIN" ]; then
-    # Drop our sage-spkg's shared lock, and try to call sage-rebase.sh
-    # under an exclusive lock
-    sage-flock -u 200
-
-    # Rebase after installing each package--in case any packages load this
-    # package at build time we need to ensure during the build that no binaries
-    # have conflicting address spaces
-    echo "Waiting for rebase lock"
-    sage-flock -x "$SAGE_LOCAL/var/lock/rebase.lock" \
-        sage-rebase.sh "$SAGE_LOCAL" 2>/dev/null
-fi
-
 
 # Note: spkg-check tests are run after the package has been copied into
 # SAGE_INST_LOCAL.  It might make more sense to run the tests before, but the

build/bin/sage-venv

@@ -37,19 +37,13 @@ options = parser.parse_args()
 if options.upgrade and options.clear:
     raise ValueError('you cannot supply --upgrade and --clear together.')
 
-if sys.platform == 'cygwin':
-    # default for Cygwin; see https://github.com/sagemath/sage/issues/30149
-    use_symlinks = False
-else:
-    # default for posix
-    # On macOS, definitely need symlinks=True (which matches what we test in build/pkgs/spkg-configure.m4)
-    # or it may fail with 'dyld: Library not loaded: @executable_path/../Python3' on macOS.
-    use_symlinks = True
-
+
+# On macOS, definitely need symlinks=True (which matches what we test in build/pkgs/spkg-configure.m4)
+# or it may fail with 'dyld: Library not loaded: @executable_path/../Python3' on macOS.
 b = venv.EnvBuilder(system_site_packages=options.system_site,
                     clear=options.clear,
                     upgrade=options.upgrade,
-                    symlinks=use_symlinks)
+                    symlinks=True)
 c = b.ensure_directories(options.env_dir)
 b.setup_python(c)
 b.create_configuration(c)

build/pkgs/ecl/spkg-install.in

@@ -1,12 +1,5 @@
 cd src
 
-if [ "$UNAME" = "CYGWIN" ]; then
-    # Some of ECL's sources rely on GNU-isms that are allowed by default on
-    # most glibcs, but not in newlib; https://github.com/sagemath/sage/issues/25057
-    CFLAGS="$CFLAGS -D_GNU_SOURCE"
-    CXXFLAGS="$CXXFLAGS -D_GNU_SOURCE"
-fi
-
 export CFLAGS
 export CXXFLAGS
 export LDFLAGS

build/pkgs/eclib/spkg-install.in

@@ -10,9 +10,6 @@ echo "would interfere with new builds..."
 rm -f "$SAGE_LOCAL"/lib/lib{curvesntl,g0nntl,jcntl,rankntl,mwrank}.*
 # Delete autotools libraries:
 rm -f "$SAGE_LOCAL"/lib/lib{e,j}c.*
-if [ "$UNAME" = "CYGWIN" ]; then
-    rm -f "$SAGE_LOCAL"/lib/cyg{e,j}c-*.dll
-fi
 echo "Deleting old include directory..."
 rm -rf "$SAGE_LOCAL"/include/eclib/
 

build/pkgs/ecm/spkg-install.in

@@ -73,12 +73,6 @@ else
     echo "to, or '--with-pic' was given in ECM_CONFIGURE."
 fi
 
-if [ "$UNAME" == "CYGWIN" ]; then
-    # Force shared library build only on Cygwin; it will not build otherwise
-    ECM_CONFIGURE="$ECM_CONFIGURE --enable-shared --disable-static"
-fi
-
-
 if [ "$SAGE_DEBUG" = yes ]; then
     # Add debug symbols and disable optimization:
     echo >&2 "Warning: Setting SAGE_DEBUG=yes completely disables optimization."

build/pkgs/fplll/spkg-check.in

@@ -1,8 +1,2 @@
 cd src
-
-if [ "$UNAME" = "CYGWIN" ]; then
-    echo "Disable parallel testing on Cygwin"
-    MAKE="$MAKE -j1"
-fi
-
 $MAKE check

build/pkgs/fplll/spkg-install.in

@@ -2,20 +2,10 @@ cd src || exit
 
 INCLUDES="-I$SAGE_LOCAL/include/"
 
-if [ "$UNAME" = "CYGWIN" ]; then
-    CXXFLAGS="$CXXFLAGS -std=gnu++11"
-fi
 CXXFLAGS="$CXXFLAGS -fPIC $INCLUDES -L$SAGE_LOCAL/lib"
 CPPFLAGS="$INCLUDES"
 CONFIGUREFLAGS="--prefix=$SAGE_LOCAL --libdir=$SAGE_LOCAL/lib"
 
-if [ "$UNAME" = "CYGWIN" ]; then
-    echo "Disable parallel building on Cygwin"
-    MAKE="$MAKE -j1"
-    export MAKE
-    CONFIGUREFLAGS="$CONFIGUREFLAGS --disable-recursive-enum"
-fi
-
 if [ "x$SAGE_DEBUG" = "xyes" ]; then
    CONFIGUREFLAGS="$CONFIGUREFLAGS --enable-debug"
 fi

build/pkgs/gc/spkg-install.in

@@ -2,11 +2,6 @@ cd src
 
 GC_CONFIGURE="--enable-large-config"
 
-if [ "$UNAME" = "CYGWIN" ]; then
-    # See https://github.com/sagemath/sage/issues/22694
-    GC_CONFIGURE="$GC_CONFIGURE --enable-threads=posix --enable-handle-fork"
-fi
-
 sdh_configure $GC_CONFIGURE
 sdh_make
 sdh_make_install