feat: bundle leantar with Lean (#12822)

This PR downloads a prebuilt release of `leantar` and bundles it with
Lean as part of the core build.

CMakeLists.txt

@@ -41,7 +41,7 @@ if(NOT (DEFINED STAGE0_CMAKE_EXECUTABLE_SUFFIX))
   set(STAGE0_CMAKE_EXECUTABLE_SUFFIX "${CMAKE_EXECUTABLE_SUFFIX}")
 endif()
 
-# Don't do anything with cadical on wasm
+# Don't do anything with cadical/leantar on wasm
 if(NOT CMAKE_SYSTEM_NAME MATCHES "Emscripten")
   find_program(CADICAL cadical)
   if(NOT CADICAL)
@@ -77,7 +77,44 @@ if(NOT CMAKE_SYSTEM_NAME MATCHES "Emscripten")
     set(CADICAL ${CMAKE_BINARY_DIR}/cadical/cadical${CMAKE_EXECUTABLE_SUFFIX})
     list(APPEND EXTRA_DEPENDS cadical)
   endif()
-  list(APPEND CL_ARGS -DCADICAL=${CADICAL})
+  find_program(LEANTAR leantar)
+  if(NOT LEANTAR)
+    set(LEANTAR_VERSION v0.1.18)
+    if(CMAKE_SYSTEM_NAME MATCHES "Windows")
+      set(LEANTAR_ARCHIVE_SUFFIX .zip)
+      set(LEANTAR_TARGET x86_64-pc-windows-msvc)
+    else()
+      set(LEANTAR_ARCHIVE_SUFFIX .tar.gz)
+      if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64")
+        set(LEANTAR_TARGET_ARCH aarch64)
+      else()
+        set(LEANTAR_TARGET_ARCH x86_64)
+      endif()
+      if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+        set(LEANTAR_TARGET_OS apple-darwin)
+      else()
+        set(LEANTAR_TARGET_OS unknown-linux-musl)
+      endif()
+      set(LEANTAR_TARGET ${LEANTAR_TARGET_ARCH}-${LEANTAR_TARGET_OS})
+    endif()
+    set(
+      LEANTAR
+      ${CMAKE_BINARY_DIR}/leantar/leantar-${LEANTAR_VERSION}-${LEANTAR_TARGET}/leantar${CMAKE_EXECUTABLE_SUFFIX}
+    )
+    if(NOT EXISTS "${LEANTAR}")
+      file(
+        DOWNLOAD
+          https://github.com/digama0/leangz/releases/download/${LEANTAR_VERSION}/leantar-${LEANTAR_VERSION}-${LEANTAR_TARGET}${LEANTAR_ARCHIVE_SUFFIX}
+        ${CMAKE_BINARY_DIR}/leantar${LEANTAR_ARCHIVE_SUFFIX}
+      )
+      file(
+        ARCHIVE_EXTRACT
+        INPUT ${CMAKE_BINARY_DIR}/leantar${LEANTAR_ARCHIVE_SUFFIX}
+        DESTINATION ${CMAKE_BINARY_DIR}/leantar
+      )
+    endif()
+  endif()
+  list(APPEND CL_ARGS -DCADICAL=${CADICAL} -DLEANTAR=${LEANTAR})
 endif()
 
 if(USE_MIMALLOC)

LICENSES

@@ -1370,4 +1370,208 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.
+==============================================================================
+leantar is by Mario Carneiro and distributed under the Apache 2.0 License:
+==============================================================================
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
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src/CMakeLists.txt

@@ -87,6 +87,8 @@ option(USE_GITHASH "GIT_HASH" ON)
 option(INSTALL_LICENSE "INSTALL_LICENSE" ON)
 # When ON we install a copy of cadical
 option(INSTALL_CADICAL "Install a copy of cadical" ON)
+# When ON we install a copy of leantar
+option(INSTALL_LEANTAR "Install a copy of leantar" ON)
 
 # FLAGS for disabling optimizations and debugging
 option(FREE_VAR_RANGE_OPT "FREE_VAR_RANGE_OPT" ON)
@@ -757,6 +759,14 @@ if(STAGE GREATER 0 AND CADICAL AND INSTALL_CADICAL)
   add_dependencies(leancpp copy-cadical)
 endif()
 
+if(STAGE GREATER 0 AND LEANTAR AND INSTALL_LEANTAR)
+  add_custom_target(
+    copy-leantar
+    COMMAND cmake -E copy_if_different "${LEANTAR}" "${CMAKE_BINARY_DIR}/bin/leantar${CMAKE_EXECUTABLE_SUFFIX}"
+  )
+  add_dependencies(leancpp copy-leantar)
+endif()
+
 # MSYS2 bash usually handles Windows paths relatively well, but not when putting them in the PATH
 string(REGEX REPLACE "^([a-zA-Z]):" "/\\1" LEAN_BIN "${CMAKE_BINARY_DIR}/bin")
 
@@ -913,6 +923,10 @@ if(STAGE GREATER 0 AND CADICAL AND INSTALL_CADICAL)
   install(PROGRAMS "${CADICAL}" DESTINATION bin)
 endif()
 
+if(STAGE GREATER 0 AND LEANTAR AND INSTALL_LEANTAR)
+  install(PROGRAMS "${LEANTAR}" DESTINATION bin)
+endif()
+
 add_custom_target(
   clean-stdlib
   COMMAND rm -rf "${CMAKE_BINARY_DIR}/lib" || true

src/lake/Lake/Config/InstallPath.lean

@@ -61,6 +61,10 @@ public def leanExe (sysroot : FilePath) :=
 public def leancExe (sysroot : FilePath) :=
   sysroot / "bin" / "leanc" |>.addExtension FilePath.exeExtension
 
+/-- Standard path of `leantar` in a Lean installation. -/
+public def leantarExe (sysroot : FilePath) :=
+  sysroot / "bin" / "leantar" |>.addExtension FilePath.exeExtension
+
 /-- Standard path of `llvm-ar` in a Lean installation. -/
 public def leanArExe (sysroot : FilePath) :=
   sysroot / "bin" / "llvm-ar" |>.addExtension FilePath.exeExtension
@@ -95,6 +99,7 @@ public structure LeanInstall where
   binDir := sysroot / "bin"
   lean := leanExe sysroot
   leanc := leancExe sysroot
+  leantar := leantarExe sysroot
   sharedLib := leanSharedLibDir sysroot / leanSharedLib
   initSharedLib := leanSharedLibDir sysroot / initSharedLib
   ar : FilePath := "ar"