Try to add iconv for boost locale

deps/Boost/Boost.cmake

@@ -123,6 +123,8 @@ set(_build_cmd ${_build_cmd}
                link=${_link}
                threading=multi
                boost.locale.icu=off
+               boost.locale.iconv=on
+               "-sICONV_PATH=${DESTDIR}/usr/local/"
                --disable-icu
                ${_boost_variants}
                stage)

deps/CMakeLists.txt

@@ -164,6 +164,7 @@ if (DEP_MSAN)
     include(MSan_Deps/LLVM/LLVM.cmake)
     include(MSan_Deps/Mesa3D/Mesa3D.cmake)
     include(MSan_Deps/fontconfig/fontconfig.cmake)
+    include(MSan_Deps/iconv/iconv.cmake)
 
     set(_msan_linker_flags "-fsanitize=memory")
     if (DEP_MSAN_RECOVERY)
@@ -266,7 +267,7 @@ set(_dep_list
 # endif()
 
 if (DEP_MSAN)
-    list(APPEND _dep_list "dep_LLVM;dep_Mesa3D;dep_fontconfig;dep_Chromium_Libs")
+    list(APPEND _dep_list "dep_LLVM;dep_Mesa3D;dep_fontconfig;dep_Chromium_Libs;dep_iconv")
 endif ()
 
 add_custom_target(deps ALL DEPENDS ${_dep_list})

deps/MSan_Deps/iconv/iconv.cmake

@@ -0,0 +1,14 @@
+
+ExternalProject_Add(dep_iconv
+    EXCLUDE_FROM_ALL ON
+    URL "https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.16.tar.gz"
+    URL_HASH SHA256=e6a1b1b589654277ee790cce3734f07876ac4ccfaecbee8afa0b649cf529cc04
+    DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/iconv
+    BUILD_IN_SOURCE ON
+    CONFIGURE_COMMAND ./configure
+        "--prefix=${DESTDIR}/usr/local"
+        "${MSAN_CMAKE_C_FLAGS}"
+        "${MSAN_CMAKE_LD_FLAGS}"
+    BUILD_COMMAND  make "-j${NPROC}"
+    INSTALL_COMMAND make install
+)