misc: Remove libm and complex code

meson.build

@@ -35,7 +35,7 @@ internal_conf = configuration_data()
 mlibc_conf = configuration_data()
 
 if not headers_only
-	add_languages('c', 'cpp', native: true)
+	add_languages('c', 'cpp', native: true, required: false)
 	add_languages('c', 'cpp', native: false)
 	c_compiler = meson.get_compiler('c')
 	cpp_compiler = meson.get_compiler('cpp')
@@ -379,7 +379,6 @@ internal_sources = [
 	'options/internal/gcc/guard-abi.cpp',
 	'options/internal/gcc-extra/cxxabi.cpp',
 	'options/internal' / host_machine.cpu_family() / 'setjmp.S',
-	'options/internal' / host_machine.cpu_family() / 'fenv.S',
 ]
 
 if not no_headers
@@ -534,7 +533,6 @@ if not headers_only
 	library('pthread', 'dummy-libs/libpthread/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)
 	library('rt', 'dummy-libs/librt/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)
 	library('util', 'dummy-libs/libutil/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)
-	library('m', 'dummy-libs/libm/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)
 	library('resolv', 'dummy-libs/libresolv/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)
 	library('dl', 'dummy-libs/libdl/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)
 	library('ssp', 'dummy-libs/libssp/src/dummy.cpp', cpp_args: libc_cpp_args, install: true)