add new meson build option -Dfuzzer-link-language=cpp for oss-fuzz

meson.build

@@ -24,6 +24,7 @@ want_textui         = get_option('without-textui') != 'yes'
 want_bot            = get_option('with-bot') == 'yes'
 want_fuzzer         = get_option('with-fuzzer') == 'yes'
 fuzzer_lib          = get_option('with-fuzzer-lib')
+fuzzer_link_language = get_option('fuzzer-link-language')
 want_proxy          = get_option('with-proxy') == 'yes'
 want_truecolor      = get_option('enable-true-color') == 'yes'
 want_gregex         = get_option('disable-gregex') != 'yes'
@@ -459,7 +460,10 @@ if want_fuzzer
     error('compiler does not support -fsanitize=fuzzer-no-link, try clang?')
   endif
   add_project_arguments('-fsanitize=fuzzer-no-link', language : 'c')
-  add_project_link_arguments('-fsanitize=fuzzer-no-link', language : 'c')
+  if (fuzzer_link_language != 'c')
+    add_languages(fuzzer_link_language)
+  endif
+  add_project_link_arguments('-fsanitize=fuzzer-no-link', language : fuzzer_link_language)
 endif
 
 ##############

meson_options.txt

@@ -2,6 +2,7 @@ option('without-textui',    type : 'combo',  description : 'Build without text f
 option('with-bot',          type : 'combo',  description : 'Build irssi-bot',                         	  choices : ['no', 'yes'])
 option('with-fuzzer',       type : 'combo',  description : 'Build irssi-fuzzer',                      	  choices : ['no', 'yes'])
 option('with-fuzzer-lib',   type : 'string', description : 'Specify path to fuzzer library', value : '-fsanitize=fuzzer')
+option('fuzzer-link-language', type : 'string', description : 'The linker to use for the fuzz targets [c, cpp]', value : 'c')
 option('with-proxy',        type : 'combo',  description : 'Build irssi-proxy',                       	  choices : ['no', 'yes'])
 option('with-perl-lib',     type : 'string', description : 'Specify where to install the Perl libraries for Irssi')
 option('with-perl',         type : 'combo',  description : 'Build with Perl support',                     choices : ['auto', 'yes', 'no'])

src/fe-fuzz/fe-common/core/meson.build

@@ -10,6 +10,7 @@ executable('theme-load-fuzz',
     libfuzzer_fe_common_core_a,
   ],
   link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
   include_directories : rootinc,
   implicit_include_directories : false,
   install : true,

src/fe-fuzz/irc/core/meson.build

@@ -12,6 +12,7 @@ executable('event-get-params-fuzz',
     libfuzzer_fe_common_core_a,
   ],
   link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
   include_directories : rootinc,
   implicit_include_directories : false,
   install : true,

src/fe-fuzz/meson.build

@@ -14,6 +14,7 @@ executable('irssi-fuzz',
     libfuzzer_fe_common_core_a,
   ],
   link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
   include_directories : rootinc,
   implicit_include_directories : false,
   install : true,
@@ -35,6 +36,7 @@ executable('server-fuzz',
     libfe_irc_notifylist_a,
   ],
   link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
   include_directories : rootinc,
   implicit_include_directories : false,
   install : true,