lib/util/charset/wscript_configure

   1 #!/usr/bin/env python
   2
   3 # rather strangely, we need to look for libiconv before checking libc
   4 # as the external libiconv can use a macro to override iconv_open to libiconv_open
   5 # and then we may find the wrong iconv.h later due to other packages looking
   6 # in /usr/local
   7 # We check for the lib iconv when building a shared lib has some compiler/linker
   8 # managed to link when specifying -liconv a executable even if there is no
   9 # libiconv.so or libiconv.a
  10
  11 conf.CHECK_LIB(libs="iconv", shlib=True)
  12
  13 #HP-UX can use libiconv as an add-on package, which has #define iconv_open libiconv_open
  14 if (conf.CHECK_FUNCS_IN('iconv_open', 'iconv', checklibc=False, headers='iconv.h') or
  15     conf.CHECK_FUNCS_IN('libiconv_open', 'iconv', checklibc=False, headers='iconv.h') or
  16     conf.CHECK_FUNCS('iconv_open', headers='iconv.h')):
  17
  18     conf.DEFINE('HAVE_NATIVE_ICONV', 1)
  19
  20 conf.CHECK_CODE('''
  21                 uint8_t inbuf[2] = { 0x30, 0xdf };
  22                 uint8_t outbuf[4] = { 0 };
  23                 char *ptr_in = (char *)inbuf;
  24                 char *ptr_out = (char *)outbuf;
  25                 size_t size_in = sizeof(inbuf);
  26                 size_t size_out = sizeof(outbuf);
  27                 size_t ret;
  28                 iconv_t cd;
  29                 cd = iconv_open("UTF-8", "UTF-16LE");
  30                 if (cd == 0 || cd == (iconv_t)-1) return -1;
  31                 ret = iconv(cd, &ptr_in, &size_in, &ptr_out, &size_out);
  32                 if (ret != (size_t)-1 || errno != EILSEQ) return -1;
  33                 ''',
  34                 define='HAVE_ICONV_ERRNO_ILLEGAL_MULTIBYTE',
  35                 execute=True,
  36                 msg='Checking errno of iconv for illegal multibyte sequence',
  37                 lib='iconv',
  38                 headers='errno.h iconv.h')