sagemathgh-36915: configure.ac: Remove tests for outdated platforms

    
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Likewise for some configuration tests in some `spkg-configure.m4` and
`spkg-install` scripts.

Cygwin, AIX, Solaris, ancient OS X, etc.

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URL: sagemath#36915
Reported by: Matthias Köppe
Reviewer(s): Dima Pasechnik, Kwankyu Lee, Matthias Köppe

build/pkgs/gfortran/spkg-configure.m4

@@ -93,10 +93,4 @@ SAGE_SPKG_CONFIGURE([gfortran], [
                     ])
             ])
     fi
-    AS_CASE([$host],
-            [*-*-cygwin*], [AS_VAR_IF([sage_spkg_install_gfortran], [yes], [
-                                AS_VAR_APPEND([SAGE_SPKG_ERRORS], ["
-  On Cygwin, gfortran must be installed as a system package. This is an error."])
-                            ])
-                           ])
 ])

build/pkgs/gmp/spkg-install.in

@@ -28,37 +28,6 @@ fi
 
 
 case "$UNAME" in
-    SunOS)
-        true;;  # Auto-detect ABI
-    Darwin)
-        # In some cases (see SAGE_ROOT/spkg/bin/sage-env), on Darwin,
-        # CC might be set to clang, but GMP doesn't seem to build
-        # with clang.
-        CLANG=`command -v clang`
-        GCC=`command -v gcc`
-        if [ -n "$CC" ] && [ "$CC" = "$CLANG" ] && [ -n "$GCC" ] ; then
-            export CC="$GCC"
-        fi
-        # Do not set ABI=32 on MacOS X 10.6 (Darwin 10) and later, since
-        # there everything defaults to 64-bit:
-        if [ "`uname -r | sed 's/\..*//'`" -lt 10 ]; then
-            # Assume MacOS X 10.4 or 10.5 (Darwin 8 or 9); also, PPC CPUs
-            # are only supported by these, not later versions.
-            echo "Building a 32-bit version of GMP, which is the only supported option."
-            ABI=32
-            case "`uname -m`" in
-                ppc|ppc64|[Pp]ower*) # Apple's 'uname' returns strange strings
-                    # The Darwin assembler rejects code using an
-                    # extended instruction set by default (cf. #8664):
-                    required_cflags="$required_cflags -Wa,-force_cpusubtype_ALL"
-                    ;;
-            esac
-        else
-            # Darwin 10 (MacOS X 10.6) or later.
-            # We don't have to set ABI here.
-            echo "Building a 64-bit version of GMP, which is the default."
-        fi
-        ;; # Darwin
     Linux)
         # GMP fails to build on 32-bit operating systems running on
         # 64-bit CPUs if CFLAGS happen to contain '-m32' and ABI is
@@ -92,26 +61,8 @@ case "$UNAME" in
             rm -f foo foo.c
         fi
         ;; # Linux
-    *) # e.g. AIX or HP-UX
-        echo >&2 "Warning: Your platform ($UNAME) isn't yet explicitly supported" \
-            "by this GMP spkg, i.e., by Sage's part of it."
 esac
 
-# Work around a bug in GCC 4.7.0 which breaks the build on Itanium CPUs.
-# See #12765, #12751, and http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48496
-if [ "`uname -m`" = ia64 ] && [ "`testcc.sh $CC`" = GCC ] ; then
-    gcc_version=`$CC -dumpversion`
-    case "$gcc_version" in
-      4.7.0)
-        required_cflags="$required_cflags -O0 -finline-functions -fschedule-insns"
-        echo >&2 "Warning: Disabling almost all optimization due to a bug in GCC 4.7.0"
-        echo >&2 "         on Itanium, which otherwise would break the build."
-        echo >&2 "         See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48496"
-        echo >&2 "         for current status and further details."
-        ;;
-    esac
-fi
-
 export ABI CFLAGS CXXFLAGS LDFLAGS # Partially redundant, but safe(r).
 # We don't export CPPFLAGS here, since we don't (have to) modify them.
 

build/pkgs/lie/spkg-install.in

@@ -7,9 +7,6 @@ die () {
 cd src
 
 chmod -R a+rX .
-if [ $UNAME = "SunOS" ]; then
-    sage-apply-patches -d solaris || die "Error patching LiE."
-fi
 
 # Building LiE in parallel is broken
 export MAKE="$MAKE -j1"

build/pkgs/m4ri/spkg-install.in

@@ -1,14 +1,5 @@
 CFLAGS="$CFLAGS -I$SAGE_LOCAL/include -g"
-
-COMPILER=`testcc.sh $CC`
-
-if [ "$COMPILER"  = "GCC" ] ; then
-   CFLAGS="$CFLAGS -fPIC -Wall -pedantic"
-elif [ "$COMPILER" = "Sun_Studio" ] ; then
-   CFLAGS="$CFLAGS -Kpic"
-elif [ "$COMPILER" = "HP_on_HP-UX" ] ; then
-   CFLAGS="$CFLAGS + z"
-fi
+CFLAGS="$CFLAGS -fPIC -Wall -pedantic"
 
 if [ "x$SAGE_DEBUG" = "xyes" ]; then
    ENABLE_DEBUG="--enable-debug"

build/pkgs/m4rie/spkg-install.in

@@ -5,16 +5,9 @@ ROOT_DIR="`pwd`"
 INCLUDES="-I$SAGE_LOCAL/include"
 LIBDIRS="-L$SAGE_LOCAL/lib"
 
-CFLAGS="`testcflags.sh -fPIC -Wall -pedantic -g` $CFLAGS $INCLUDES"
+CFLAGS="-fPIC -Wall -pedantic -g $CFLAGS $INCLUDES"
 LDFLAGS="$LIBDIRS $LDFLAGS"
 
-COMPILER=`testcc.sh $CC`
-if [ "$COMPILER" = "Sun_Studio" ] ; then
-    CFLAGS="$CFLAGS -Kpic"
-elif [ "$COMPILER" = "HP_on_HP-UX" ] ; then
-    CFLAGS="$CFLAGS + z"
-fi
-
 CPPFLAGS="$INCLUDES"
 
 if [ "x$SAGE_DEBUG" = "xyes" ]; then