net/clamav/patches/020-iconv.patch

   1 --- a/CMakeLists.txt
   2 +++ b/CMakeLists.txt
   3 @@ -448,7 +448,7 @@ endif()
   4
   5  # libclamav feature dependencies
   6  if(NOT WIN32)
   7 -    find_package(Iconv REQUIRED)
   8 +    find_package(Iconv)
   9      # Set variable required by libclamav to use iconv
  10      set(HAVE_ICONV 1)
  11  endif()
  12 --- a/libclamav/CMakeLists.txt
  13 +++ b/libclamav/CMakeLists.txt
  14 @@ -536,10 +536,39 @@ if(ENABLE_SHARED_LIB)
  15                  ClamAV::win32_compat
  16                  wsock32 ws2_32 )
  17      else()
  18 +        if(Iconv_FOUND)
  19 +            if(NOT Iconv_IS_BUILT_IN)
  20 +                target_link_libraries(clamav PRIVATE Iconv::Iconv)
  21 +                set(CMAKE_REQUIRED_LIBRARIES "Iconv::Iconv")
  22 +            endif()
  23 +        else()
  24 +            # Sometime the build environment is not setup
  25 +            # in a way CMake can find Iconv on its own by default.
  26 +            # But if we simply link against iconv (-liconv), the build may succeed
  27 +            # due to other compiler/link flags.
  28 +            set(CMAKE_REQUIRED_LIBRARIES "iconv")
  29 +            check_c_source_compiles("
  30 +                #include <stddef.h>
  31 +                #include <iconv.h>
  32 +                int main() {
  33 +                    char *a, *b;
  34 +                    size_t i, j;
  35 +                    iconv_t ic;
  36 +                    ic = iconv_open(\"to\", \"from\");
  37 +                    iconv(ic, &a, &i, &b, &j);
  38 +                    iconv_close(ic);
  39 +                }
  40 +                "
  41 +                Iconv_EXPLICITLY_AT_ENV)
  42 +            if(Iconv_EXPLICITLY_AT_ENV)
  43 +                target_link_libraries(clamav PRIVATE iconv)
  44 +            else()
  45 +                message(FATAL_ERROR "Iconv is not found, make sure to provide it in the build environment")
  46 +            endif()
  47 +        endif()
  48          target_link_libraries( clamav
  49              PUBLIC
  50                  Threads::Threads
  51 -                Iconv::Iconv
  52                  ${CMAKE_DL_LIBS}
  53                  m )
  54      endif()
  55 @@ -556,8 +585,6 @@ if(ENABLE_SHARED_LIB)
  56
  57      if(WIN32)
  58          set_target_properties( clamav PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON )
  59 -    else()
  60 -        target_link_libraries( clamav PUBLIC Iconv::Iconv )
  61      endif()
  62      if(WIN32)
  63          install( TARGETS clamav DESTINATION . COMPONENT libraries )