On Windows, ctpp2 use the iconv libraries.

If we are cross-compiling to windows, we need to also link with the
iconv library.

We do not check for the iconv library existance here. We assume that
if the ctpp2 library is present all its own dependencies are present also.

meson.build

@@ -6,6 +6,7 @@ thread_dep = dependency('threads')
 kiwixlib_dep = dependency('kiwix')
 microhttpd_dep = dependency('libmicrohttpd')
 z_dep = dependency('zlib')
+
 # Idealy we should not have more dependency, however :
 # We should declare we use ctpp2 in kiwixlib in the pkg-config file.
 # But there is no pkg-config file for ctpp2. Once one exists, no need to
@@ -21,7 +22,13 @@ if ctpp2_prefix_install == ''
     error('ctpp2/CTPP2Logger.hppnot found')
   endif
   ctpp2_lib = compiler.find_library(libname)
-  ctpp2_dep = declare_dependency(dependencies:[ctpp2_lib])
+  link_args = ['-l'+libname]
+  if meson.is_cross_build()
+    if host_machine.system() == 'windows'
+      link_args += ['-liconv']
+    endif
+  endif
+  ctpp2_dep = declare_dependency(link_args:link_args)
 else
   ctpp2_include_path = ctpp2_prefix_install + '/include'
   ctpp2_include_args = ['-I'+ctpp2_include_path]
@@ -31,7 +38,13 @@ else
   ctpp2_include_path = include_directories(ctpp2_include_path, is_system:true)
   ctpp2_lib_path = ctpp2_prefix_install+'/lib'
   ctpp2_lib = compiler.find_library(libname, dirs:ctpp2_lib_path)
-  ctpp2_dep = declare_dependency(include_directories:ctpp2_include_path, dependencies:[ctpp2_lib])
+  link_args = ['-L'+ctpp2_lib_path, '-l'+libname]
+  if meson.is_cross_build()
+    if host_machine.system() == 'windows'
+      link_args += ['-liconv']
+    endif
+  endif
+  ctpp2_dep = declare_dependency(include_directories:ctpp2_include_path, link_args:link_args)
 endif
 
 all_deps = [thread_dep, kiwixlib_dep, microhttpd_dep, ctpp2_dep, z_dep]