sizeof.sh

   1 #!/bin/sh
   2
   3 export LC_ALL=C
   4 MUSL=${MUSL:-../musl}
   5
   6 awk -F'\t' '$3 ~ /^[sut]$/ {
   7         print $1
   8 }' data/musl.tags >/tmp/m.type
   9 echo 'short' >>/tmp/m.type
  10 echo 'int' >>/tmp/m.type
  11 echo 'long' >>/tmp/m.type
  12 echo 'long long' >>/tmp/m.type
  13 echo 'float' >>/tmp/m.type
  14 echo 'double' >>/tmp/m.type
  15 echo 'long double' >>/tmp/m.type
  16 echo 'wchar_t' >>/tmp/m.type
  17 echo '_Bool' >>/tmp/m.type
  18 echo 'void*' >>/tmp/m.type
  19
  20 (
  21         cd $MUSL/include
  22         find . -name '*.h' | sed 's,^\./,,' >/tmp/m.header
  23 )
  24
  25 echo '#define _GNU_SOURCE 1' >sizeof.c
  26 echo '#define _LARGEFILE64_SOURCE 1' >>sizeof.c
  27 echo '#define _FILE_OFFSET_BITS 64' >>sizeof.c
  28 echo '#define SYSLOG_NAMES 1' >>sizeof.c
  29 echo '#include <stddef.h>' >>sizeof.c
  30 echo '#include <sys/types.h>' >>sizeof.c
  31 echo '' >>sizeof.c
  32
  33 sort /tmp/m.header |uniq |awk '
  34         /^(sys\/cachectl|stdalign|stdnoreturn)\.h$/ { printf "//" }
  35         { print "#include <" $0 ">" }' >>sizeof.c
  36 echo '#define p(x) printf("%s\\t%u\\n", #x, sizeof(x));' >>sizeof.c
  37 echo 'int main(){' >>sizeof.c
  38 sort /tmp/m.type |uniq |awk '
  39         /^(struct|union) __(CODE|ptcb|siginfo|ucontext|sigjmp_buf|double_repr|float_repr)$/ ||
  40         /^(DIR|FILE|elf_fpxregset_t|struct user_fpxregs_struct|Sg_io_vec)$/ { printf "//" }
  41         { print "p(" $0 ")" }' >>sizeof.c
  42 echo 'return 0;}' >>sizeof.c