capstone: Remove the capstone submodule

Now that we allow compiling with Capstone v3.0.5 again, all our supported
build hosts should provide at least this version of the disassembler
library, so we do not need to ship this as a submodule anymore.

Message-Id: <20220516145823.148450-4-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

8 files changed, 11 insertions, 143 deletions

diff --git a/.gitlab-ci.d/buildtest.yml b/.gitlab-ci.d/buildtest.yml
index a4d43d743b..e9620c3074 100644
--- a/.gitlab-ci.d/buildtest.yml
+++ b/.gitlab-ci.d/buildtest.yml
@@ -42,7 +42,7 @@ build-system-ubuntu:
   variables:
     IMAGE: ubuntu2004
     CONFIGURE_ARGS: --enable-docs --enable-fdt=system --enable-slirp=system
-        --enable-capstone=system
+        --enable-capstone
     TARGETS: aarch64-softmmu alpha-softmmu cris-softmmu hppa-softmmu
       microblazeel-softmmu mips64el-softmmu
     MAKE_CHECK_ARGS: check-build
@@ -119,7 +119,7 @@ build-system-fedora:
   variables:
     IMAGE: fedora
     CONFIGURE_ARGS: --disable-gcrypt --enable-nettle --enable-docs
-             --enable-fdt=system --enable-slirp=system --enable-capstone=system
+             --enable-fdt=system --enable-slirp=system --enable-capstone
     TARGETS: tricore-softmmu microblaze-softmmu mips-softmmu
       xtensa-softmmu m68k-softmmu riscv32-softmmu ppc-softmmu sparc64-softmmu
     MAKE_CHECK_ARGS: check-build
diff --git a/.gitlab-ci.d/windows.yml b/.gitlab-ci.d/windows.yml
index 47f6073773..cf7724b8e5 100644
--- a/.gitlab-ci.d/windows.yml
+++ b/.gitlab-ci.d/windows.yml
@@ -57,7 +57,7 @@ msys2-64bit:
   - $env:CHERE_INVOKING = 'yes'  # Preserve the current working directory
   - $env:MSYSTEM = 'MINGW64'     # Start a 64 bit Mingw environment
   - .\msys64\usr\bin\bash -lc './configure --target-list=x86_64-softmmu
-      --enable-capstone=system --without-default-devices'
+      --enable-capstone --without-default-devices'
   - .\msys64\usr\bin\bash -lc "sed -i '/^ROMS=/d' build/config-host.mak"
   - .\msys64\usr\bin\bash -lc 'make -j2'
   - .\msys64\usr\bin\bash -lc 'make check'
@@ -90,7 +90,6 @@ msys2-32bit:
   - $env:MSYSTEM = 'MINGW32'     # Start a 32-bit MinG environment
   - mkdir output
   - cd output
-  - ..\msys64\usr\bin\bash -lc "../configure --target-list=ppc64-softmmu
-      --enable-capstone=system"
+  - ..\msys64\usr\bin\bash -lc "../configure --target-list=ppc64-softmmu"
   - ..\msys64\usr\bin\bash -lc 'make -j2'
   - ..\msys64\usr\bin\bash -lc 'make check'
diff --git a/.gitmodules b/.gitmodules
index f4b6a9b401..b8bff47df8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,9 +31,6 @@
 [submodule "ui/keycodemapdb"]
 	path = ui/keycodemapdb
 	url = https://gitlab.com/qemu-project/keycodemapdb.git
-[submodule "capstone"]
-	path = capstone
-	url = https://gitlab.com/qemu-project/capstone.git
 [submodule "roms/seabios-hppa"]
 	path = roms/seabios-hppa
 	url = https://gitlab.com/qemu-project/seabios-hppa.git
diff --git a/capstone b/capstone
deleted file mode 160000
-Subproject f8b1b833015a4ae47110ed068e0deb7106ced66
diff --git a/configure b/configure
index 103a7b02e8..180ee688dc 100755
--- a/configure
+++ b/configure
@@ -307,10 +307,8 @@ skip_meson=no
 
 # 1. Track which submodules are needed
 if test "$default_feature" = no ; then
-  capstone="disabled"
   slirp="disabled"
 else
-  capstone="auto"
   slirp="auto"
 fi
 fdt="auto"
@@ -869,14 +867,6 @@ for opt do
   --enable-uuid|--disable-uuid)
       echo "$0: $opt is obsolete, UUID support is always built" >&2
   ;;
-  --disable-capstone) capstone="disabled"
-  ;;
-  --enable-capstone) capstone="enabled"
-  ;;
-  --enable-capstone=git) capstone="internal"
-  ;;
-  --enable-capstone=*) capstone="$optarg"
-  ;;
   --with-git=*) git="$optarg"
   ;;
   --with-git-submodules=*)
@@ -1567,16 +1557,6 @@ case "$fdt" in
 esac
 
 ##########################################
-# capstone
-
-case "$capstone" in
-  auto | enabled | internal)
-    # Simpler to always update submodule, even if not needed.
-    git_submodules="${git_submodules} capstone"
-    ;;
-esac
-
-##########################################
 # check and set a backend for coroutine
 
 # We prefer ucontext, but it's not always possible. The fallback
@@ -2220,7 +2200,6 @@ if test "$skip_meson" = no; then
   test "$werror" = yes && meson_option_add -Dwerror=true
 
   # QEMU options
-  test "$capstone" != auto && meson_option_add "-Dcapstone=$capstone"
   test "$cfi" != false && meson_option_add "-Dcfi=$cfi"
   test "$fdt" != auto && meson_option_add "-Dfdt=$fdt"
   test -n "${LIB_FUZZING_ENGINE+xxx}" && meson_option_add "-Dfuzzing_engine=$LIB_FUZZING_ENGINE"
diff --git a/meson.build b/meson.build
index 526ff29a86..c4fb8fa5d0 100644
--- a/meson.build
+++ b/meson.build
@@ -2522,13 +2522,10 @@ genh += custom_target('config-poison.h',
 ##############
 
 capstone = not_found
-capstone_opt = get_option('capstone')
-if capstone_opt in ['enabled', 'auto', 'system']
-  have_internal = fs.exists(meson.current_source_dir() / 'capstone/Makefile')
+if not get_option('capstone').auto() or have_system or have_user
   capstone = dependency('capstone', version: '>=3.0.5',
                         kwargs: static_kwargs, method: 'pkg-config',
-                        required: capstone_opt == 'system' or
-                                  capstone_opt == 'enabled' and not have_internal)
+                        required: get_option('capstone'))
 
   # Some versions of capstone have broken pkg-config file
   # that reports a wrong -I path, causing the #include to
@@ -2537,110 +2534,10 @@ if capstone_opt in ['enabled', 'auto', 'system']
   if capstone.found() and not cc.compiles('#include <capstone.h>',
                                           dependencies: [capstone])
     capstone = not_found
-    if capstone_opt == 'system'
-      error('system capstone requested, it does not appear to work')
+    if get_option('capstone').enabled()
+      error('capstone requested, but it does not appear to work')
     endif
   endif
-
-  if capstone.found()
-    capstone_opt = 'system'
-  elif have_internal
-    capstone_opt = 'internal'
-  else
-    capstone_opt = 'disabled'
-  endif
-endif
-if capstone_opt == 'internal'
-  capstone_data = configuration_data()
-  capstone_data.set('CAPSTONE_USE_SYS_DYN_MEM', '1')
-
-  capstone_files = files(
-    'capstone/cs.c',
-    'capstone/MCInst.c',
-    'capstone/MCInstrDesc.c',
-    'capstone/MCRegisterInfo.c',
-    'capstone/SStream.c',
-    'capstone/utils.c'
-  )
-
-  if 'CONFIG_ARM_DIS' in config_all_disas
-    capstone_data.set('CAPSTONE_HAS_ARM', '1')
-    capstone_files += files(
-      'capstone/arch/ARM/ARMDisassembler.c',
-      'capstone/arch/ARM/ARMInstPrinter.c',
-      'capstone/arch/ARM/ARMMapping.c',
-      'capstone/arch/ARM/ARMModule.c'
-    )
-  endif
-
-  # FIXME: This config entry currently depends on a c++ compiler.
-  # Which is needed for building libvixl, but not for capstone.
-  if 'CONFIG_ARM_A64_DIS' in config_all_disas
-    capstone_data.set('CAPSTONE_HAS_ARM64', '1')
-    capstone_files += files(
-      'capstone/arch/AArch64/AArch64BaseInfo.c',
-      'capstone/arch/AArch64/AArch64Disassembler.c',
-      'capstone/arch/AArch64/AArch64InstPrinter.c',
-      'capstone/arch/AArch64/AArch64Mapping.c',
-      'capstone/arch/AArch64/AArch64Module.c'
-    )
-  endif
-
-  if 'CONFIG_PPC_DIS' in config_all_disas
-    capstone_data.set('CAPSTONE_HAS_POWERPC', '1')
-    capstone_files += files(
-      'capstone/arch/PowerPC/PPCDisassembler.c',
-      'capstone/arch/PowerPC/PPCInstPrinter.c',
-      'capstone/arch/PowerPC/PPCMapping.c',
-      'capstone/arch/PowerPC/PPCModule.c'
-    )
-  endif
-
-  if 'CONFIG_S390_DIS' in config_all_disas
-    capstone_data.set('CAPSTONE_HAS_SYSZ', '1')
-    capstone_files += files(
-      'capstone/arch/SystemZ/SystemZDisassembler.c',
-      'capstone/arch/SystemZ/SystemZInstPrinter.c',
-      'capstone/arch/SystemZ/SystemZMapping.c',
-      'capstone/arch/SystemZ/SystemZModule.c',
-      'capstone/arch/SystemZ/SystemZMCTargetDesc.c'
-    )
-  endif
-
-  if 'CONFIG_I386_DIS' in config_all_disas
-    capstone_data.set('CAPSTONE_HAS_X86', 1)
-    capstone_files += files(
-      'capstone/arch/X86/X86Disassembler.c',
-      'capstone/arch/X86/X86DisassemblerDecoder.c',
-      'capstone/arch/X86/X86ATTInstPrinter.c',
-      'capstone/arch/X86/X86IntelInstPrinter.c',
-      'capstone/arch/X86/X86InstPrinterCommon.c',
-      'capstone/arch/X86/X86Mapping.c',
-      'capstone/arch/X86/X86Module.c'
-    )
-  endif
-
-  configure_file(output: 'capstone-defs.h', configuration: capstone_data)
-
-  capstone_cargs = [
-    # FIXME: There does not seem to be a way to completely replace the c_args
-    # that come from add_project_arguments() -- we can only add to them.
-    # So: disable all warnings with a big hammer.
-    '-Wno-error', '-w',
-
-    # Include all configuration defines via a header file, which will wind up
-    # as a dependency on the object file, and thus changes here will result
-    # in a rebuild.
-    '-include', 'capstone-defs.h'
-  ]
-
-  libcapstone = static_library('capstone',
-                               build_by_default: false,
-                               sources: capstone_files,
-                               c_args: capstone_cargs,
-                               include_directories: 'capstone/include')
-  capstone = declare_dependency(link_with: libcapstone,
-                                include_directories: 'capstone/include/capstone')
 endif
 
 slirp = not_found
@@ -3970,7 +3867,7 @@ summary_info += {'bzip2 support':     libbzip2}
 summary_info += {'lzfse support':     liblzfse}
 summary_info += {'zstd support':      zstd}
 summary_info += {'NUMA host support': numa}
-summary_info += {'capstone':          capstone_opt == 'internal' ? capstone_opt : capstone}
+summary_info += {'capstone':          capstone}
 summary_info += {'libpmem support':   libpmem}
 summary_info += {'libdaxctl support': libdaxctl}
 summary_info += {'libudev':           libudev}
diff --git a/meson_options.txt b/meson_options.txt
index 29c6b90cec..fcdc43f7db 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -252,8 +252,7 @@ option('virtfs', type: 'feature', value: 'auto',
 option('virtiofsd', type: 'feature', value: 'auto',
        description: 'build virtiofs daemon (virtiofsd)')
 
-option('capstone', type: 'combo', value: 'auto',
-       choices: ['disabled', 'enabled', 'auto', 'system', 'internal'],
+option('capstone', type: 'feature', value: 'auto',
        description: 'Whether and how to find the capstone library')
 option('slirp', type: 'combo', value: 'auto',
        choices: ['disabled', 'enabled', 'auto', 'system', 'internal'],
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
index 5d2172bfb4..7fc56d3f4a 100644
--- a/scripts/meson-buildoptions.sh
+++ b/scripts/meson-buildoptions.sh
@@ -16,9 +16,6 @@ meson_options_help() {
   printf "%s\n" '  --enable-block-drv-whitelist-in-tools'
   printf "%s\n" '                           use block whitelist also in tools instead of only'
   printf "%s\n" '                           QEMU'
-  printf "%s\n" '  --enable-capstone[=CHOICE]'
-  printf "%s\n" '                           Whether and how to find the capstone library'
-  printf "%s\n" '                           (choices: auto/disabled/enabled/internal/system)'
   printf "%s\n" '  --enable-cfi             Control-Flow Integrity (CFI)'
   printf "%s\n" '  --enable-cfi-debug       Verbose errors in case of CFI violation'
   printf "%s\n" '  --enable-debug-mutex     mutex debugging support'
@@ -77,6 +74,7 @@ meson_options_help() {
   printf "%s\n" '  brlapi          brlapi character device driver'
   printf "%s\n" '  bzip2           bzip2 support for DMG images'
   printf "%s\n" '  cap-ng          cap_ng support'
+  printf "%s\n" '  capstone        Whether and how to find the capstone library'
   printf "%s\n" '  cloop           cloop image format support'
   printf "%s\n" '  cocoa           Cocoa user interface (macOS only)'
   printf "%s\n" '  coreaudio       CoreAudio sound support'
@@ -209,7 +207,6 @@ _meson_option_parse() {
     --disable-cap-ng) printf "%s" -Dcap_ng=disabled ;;
     --enable-capstone) printf "%s" -Dcapstone=enabled ;;
     --disable-capstone) printf "%s" -Dcapstone=disabled ;;
-    --enable-capstone=*) quote_sh "-Dcapstone=$2" ;;
     --enable-cfi) printf "%s" -Dcfi=true ;;
     --disable-cfi) printf "%s" -Dcfi=false ;;
     --enable-cfi-debug) printf "%s" -Dcfi_debug=true ;;