drop support for powerpc-linux-gnueabi(hf)

These are the last PowerPC cross targets that still use the IBM 128-bit long
double format. I'm not convinced anyone cares enough about them to justify
keeping them around, so this drops support. powerpc-linux-musleabi(hf), which
use the IEEE format, are still fully supported for people who want to use old
32-bit PowerPC hardware.

lib/std/zig/target.zig

@@ -76,8 +76,6 @@ pub const available_libcs = [_]ArchOsAbi{
     .{ .arch = .mips64el, .os = .linux, .abi = .muslabi64, .os_ver = .{ .major = 2, .minor = 3, .patch = 48 } },
     .{ .arch = .mips64el, .os = .linux, .abi = .muslabin32, .os_ver = .{ .major = 2, .minor = 6, .patch = 0 } },
     .{ .arch = .mips64el, .os = .openbsd, .abi = .none, .os_ver = .{ .major = 4, .minor = 7, .patch = 0 } },
-    .{ .arch = .powerpc, .os = .linux, .abi = .gnueabi, .os_ver = .{ .major = 1, .minor = 3, .patch = 45 }, .glibc_triple = "powerpc-linux-gnu-soft" },
-    .{ .arch = .powerpc, .os = .linux, .abi = .gnueabihf, .os_ver = .{ .major = 1, .minor = 3, .patch = 45 }, .glibc_triple = "powerpc-linux-gnu" },
     .{ .arch = .powerpc, .os = .linux, .abi = .musleabi, .os_ver = .{ .major = 1, .minor = 3, .patch = 45 } },
     .{ .arch = .powerpc, .os = .linux, .abi = .musleabihf, .os_ver = .{ .major = 1, .minor = 3, .patch = 45 } },
     .{ .arch = .powerpc, .os = .netbsd, .abi = .eabi, .os_ver = .{ .major = 6, .minor = 0, .patch = 0 } },
@@ -244,7 +242,7 @@ pub fn glibcArchNameHeaders(arch: std.Target.Cpu.Arch) [:0]const u8 {
         .arm, .armeb => "arm",
         .loongarch64 => "loongarch",
         .mips, .mipsel, .mips64, .mips64el => "mips",
-        .powerpc, .powerpc64le => "powerpc",
+        .powerpc64le => "powerpc",
         .riscv32, .riscv64 => "riscv",
         .sparc, .sparc64 => "sparc",
         .x86, .x86_64 => "x86",

test/llvm_targets.zig

@@ -190,8 +190,6 @@ const targets = [_]std.Target.Query{
     .{ .cpu_arch = .powerpc, .os_tag = .haiku, .abi = .eabihf },
     .{ .cpu_arch = .powerpc, .os_tag = .linux, .abi = .eabi },
     .{ .cpu_arch = .powerpc, .os_tag = .linux, .abi = .eabihf },
-    .{ .cpu_arch = .powerpc, .os_tag = .linux, .abi = .gnueabi },
-    .{ .cpu_arch = .powerpc, .os_tag = .linux, .abi = .gnueabihf },
     .{ .cpu_arch = .powerpc, .os_tag = .linux, .abi = .musleabi },
     .{ .cpu_arch = .powerpc, .os_tag = .linux, .abi = .musleabihf },
     .{ .cpu_arch = .powerpc, .os_tag = .netbsd, .abi = .eabi },

test/tests.zig

@@ -792,25 +792,6 @@ const module_test_targets = blk: {
             .skip_modules = &.{"std"},
             .extra_target = true,
         },
-        .{
-            .target = .{
-                .cpu_arch = .powerpc,
-                .os_tag = .linux,
-                .abi = .gnueabi,
-            },
-            .link_libc = true,
-            .extra_target = true,
-        },
-        .{
-            .target = .{
-                .cpu_arch = .powerpc,
-                .os_tag = .linux,
-                .abi = .gnueabihf,
-            },
-            .link_libc = true,
-            // https://github.com/ziglang/zig/issues/2256
-            .skip_modules = &.{"std"},
-        },
 
         .{
             .target = .{

tools/process_headers.zig

@@ -47,8 +47,6 @@ const glibc_targets = [_]LibCTarget{
     .{ .arch = .mips64, .abi = .gnuabin32, .dest = "mips-linux-gnu" },
     .{ .arch = .mips64el, .abi = .gnuabi64, .dest = "mips-linux-gnu" },
     .{ .arch = .mips64el, .abi = .gnuabin32, .dest = "mips-linux-gnu" },
-    .{ .arch = .powerpc, .abi = .gnueabi, .dest = "powerpc-linux-gnu" },
-    .{ .arch = .powerpc, .abi = .gnueabihf, .dest = "powerpc-linux-gnu" },
     .{ .arch = .powerpc64le, .abi = .gnu, .dest = "powerpc-linux-gnu" },
     .{ .arch = .riscv32, .abi = .gnu, .dest = "riscv-linux-gnu" },
     .{ .arch = .riscv64, .abi = .gnu, .dest = "riscv-linux-gnu" },