Merge pull request #4063 from dhewg/pull/llvm

llvm: fix cross compilation issues

config/functions

@@ -416,7 +416,7 @@ cpp = '$CXX'
 ar = '$AR'
 strip = '$STRIP'
 pkgconfig = '$PKG_CONFIG'
-llvm-config = '$SYSROOT_PREFIX/usr/bin/llvm-config-host'
+llvm-config = '$TOOLCHAIN/bin/llvm-config-host'
 libgcrypt-config = '$SYSROOT_PREFIX/usr/bin/libgcrypt-config'
 
 [host_machine]
@@ -446,7 +446,7 @@ cpp = '$TARGET_CXX'
 ar = '$TARGET_AR'
 strip = '$TARGET_STRIP'
 pkgconfig = '$PKG_CONFIG'
-llvm-config = '$SYSROOT_PREFIX/usr/bin/llvm-config-host'
+llvm-config = '$TOOLCHAIN/bin/llvm-config-host'
 libgcrypt-config = '$SYSROOT_PREFIX/usr/bin/libgcrypt-config'
 
 [host_machine]

packages/graphics/mesa/package.mk

@@ -53,7 +53,6 @@ fi
 
 if [ "${LLVM_SUPPORT}" = "yes" ]; then
   PKG_DEPENDS_TARGET+=" elfutils llvm"
-  export LLVM_CONFIG="${SYSROOT_PREFIX}/usr/bin/llvm-config-host"
   PKG_MESON_OPTS_TARGET+=" -Dllvm=true"
 else
   PKG_MESON_OPTS_TARGET+=" -Dllvm=false"

packages/lang/llvm/package.mk

@@ -13,7 +13,8 @@ PKG_DEPENDS_HOST="toolchain:host"
 PKG_DEPENDS_TARGET="toolchain llvm:host zlib"
 PKG_LONGDESC="Low-Level Virtual Machine (LLVM) is a compiler infrastructure."
 
-PKG_CMAKE_OPTS_COMMON="-DLLVM_INCLUDE_TOOLS=ON \
+PKG_CMAKE_OPTS_COMMON="-DCMAKE_BUILD_TYPE=MinSizeRel \
+                       -DLLVM_INCLUDE_TOOLS=ON \
                        -DLLVM_BUILD_TOOLS=OFF \
                        -DLLVM_BUILD_UTILS=OFF \
                        -DLLVM_BUILD_EXAMPLES=OFF \
@@ -21,10 +22,13 @@ PKG_CMAKE_OPTS_COMMON="-DLLVM_INCLUDE_TOOLS=ON \
                        -DLLVM_BUILD_TESTS=OFF \
                        -DLLVM_INCLUDE_TESTS=OFF \
                        -DLLVM_INCLUDE_GO_TESTS=OFF \
+                       -DLLVM_BUILD_BENCHMARKS=OFF \
                        -DLLVM_BUILD_DOCS=OFF \
                        -DLLVM_INCLUDE_DOCS=OFF \
                        -DLLVM_ENABLE_DOXYGEN=OFF \
                        -DLLVM_ENABLE_SPHINX=OFF \
+                       -DLLVM_ENABLE_OCAMLDOC=OFF \
+                       -DLLVM_ENABLE_BINDINGS=OFF \
                        -DLLVM_TARGETS_TO_BUILD="AMDGPU" \
                        -DLLVM_ENABLE_TERMINFO=OFF \
                        -DLLVM_ENABLE_ASSERTIONS=OFF \
@@ -35,14 +39,16 @@ PKG_CMAKE_OPTS_COMMON="-DLLVM_INCLUDE_TOOLS=ON \
                        -DLLVM_OPTIMIZED_TABLEGEN=ON \
                        -DLLVM_APPEND_VC_REV=OFF \
                        -DLLVM_ENABLE_RTTI=ON \
-                       -DLLVM_ENABLE_UNWIND_TABLES=OFF"
+                       -DLLVM_ENABLE_UNWIND_TABLES=OFF \
+                       -DLLVM_ENABLE_Z3_SOLVER=OFF"
 
-PKG_CMAKE_OPTS_HOST="$PKG_CMAKE_OPTS_COMMON \
-                     -DCMAKE_INSTALL_RPATH=$TOOLCHAIN/lib"
+pre_configure_host() {
+  CXXFLAGS+=" -DLLVM_CONFIG_EXEC_PREFIX=\\\"$SYSROOT_PREFIX/usr\\\""
+  PKG_CMAKE_OPTS_HOST="$PKG_CMAKE_OPTS_COMMON"
+}
 
 pre_configure_target() {
   PKG_CMAKE_OPTS_TARGET="$PKG_CMAKE_OPTS_COMMON \
-                         -DCMAKE_BUILD_TYPE=MinSizeRel \
                          -DCMAKE_C_FLAGS="$CFLAGS" \
                          -DCMAKE_CXX_FLAGS="$CXXFLAGS" \
                          -DLLVM_TARGET_ARCH="$TARGET_ARCH" \
@@ -54,7 +60,8 @@ make_host() {
 }
 
 makeinstall_host() {
-  cp -a bin/llvm-config $SYSROOT_PREFIX/usr/bin/llvm-config-host
+  cp -a lib/libLLVM-*.so $TOOLCHAIN/lib
+  cp -a bin/llvm-config $TOOLCHAIN/bin/llvm-config-host
   cp -a bin/llvm-tblgen $TOOLCHAIN/bin
 }
 

packages/lang/llvm/patches/llvm-config.patch

@@ -0,0 +1,13 @@
+--- a/tools/llvm-config/llvm-config.cpp	2019-12-15 20:54:21.898634608 +0100
++++ b/tools/llvm-config/llvm-config.cpp	2019-12-15 20:56:12.280223943 +0100
+@@ -285,6 +285,10 @@
+   CurrentExecPrefix =
+       sys::path::parent_path(sys::path::parent_path(CurrentPath)).str();
+ 
++#ifdef LLVM_CONFIG_EXEC_PREFIX
++  CurrentExecPrefix = LLVM_CONFIG_EXEC_PREFIX;
++#endif
++
+   // Check to see if we are inside a development tree by comparing to possible
+   // locations (prefix style or CMake style).
+   if (sys::fs::equivalent(CurrentExecPrefix, LLVM_OBJ_ROOT)) {

packages/lang/llvm/patches/no-z3.patch

@@ -0,0 +1,47 @@
+Description:
+ Disable z3 to avoid pulling ocaml into main.
+ For some reason the cmake option LLVM_ENABLE_Z3_SOLVER was not taken into account
+Author: Gianfranco Costamagna <locutusofborg@debian.org>
+
+Last-Update: 2019-11-26
+
+Index: llvm-toolchain-9-9.0.0/CMakeLists.txt
+===================================================================
+--- llvm-toolchain-9-9.0.0.orig/CMakeLists.txt
++++ llvm-toolchain-9-9.0.0/CMakeLists.txt
+@@ -340,24 +340,22 @@
+ 
+ set(LLVM_Z3_INSTALL_DIR "" CACHE STRING "Install directory of the Z3 solver.")
+ 
+-find_package(Z3 4.7.1)
+-
+-if (LLVM_Z3_INSTALL_DIR)
+-  if (NOT Z3_FOUND)
+-    message(FATAL_ERROR "Z3 >= 4.7.1 has not been found in LLVM_Z3_INSTALL_DIR: ${LLVM_Z3_INSTALL_DIR}.")
+-  endif()
+-endif()
+-
+-set(LLVM_ENABLE_Z3_SOLVER_DEFAULT "${Z3_FOUND}")
+-
+ option(LLVM_ENABLE_Z3_SOLVER
+   "Enable Support for the Z3 constraint solver in LLVM."
+-  ${LLVM_ENABLE_Z3_SOLVER_DEFAULT}
++  OFF
+ )
+ 
+ if (LLVM_ENABLE_Z3_SOLVER)
+-  if (NOT Z3_FOUND)
+-    message(FATAL_ERROR "LLVM_ENABLE_Z3_SOLVER cannot be enabled when Z3 is not available.")
++  find_package(Z3 4.7.1)
++
++  if (LLVM_Z3_INSTALL_DIR)
++    if (NOT Z3_FOUND)
++      message(FATAL_ERROR "Z3 >= 4.7.1 has not been found in LLVM_Z3_INSTALL_DIR: ${LLVM_Z3_INSTALL_DIR}.")
++    endif()
++  else()
++    if (NOT Z3_FOUND)
++      message(FATAL_ERROR "LLVM_ENABLE_Z3_SOLVER cannot be enabled when Z3 is not available.")
++    endif()
+   endif()
+ 
+   set(LLVM_WITH_Z3 1)