acglib.m4

   1 ## Portability defines that help interoperate with classic and modern autoconfs
   2 ifdef([AC_TR_SH],[
   3 define([GLIB_TR_SH],[AC_TR_SH([$1])])
   4 define([GLIB_TR_CPP],[AC_TR_CPP([$1])])
   5 ], [
   6 define([GLIB_TR_SH],
   7        [patsubst(translit([[$1]], [*+], [pp]), [[^a-zA-Z0-9_]], [_])])
   8 define([GLIB_TR_CPP],
   9        [patsubst(translit([[$1]],
  10                           [*abcdefghijklmnopqrstuvwxyz],
  11                           [PABCDEFGHIJKLMNOPQRSTUVWXYZ]),
  12                  [[^A-Z0-9_]], [_])])
  13 ])
  14
  15 # GLIB_AC_DIVERT_BEFORE_HELP(STUFF)
  16 # ---------------------------------
  17 # Put STUFF early enough so that they are available for $ac_help expansion.
  18 # Handle both classic (<= v2.13) and modern autoconf
  19 AC_DEFUN([GLIB_AC_DIVERT_BEFORE_HELP],
  20 [ifdef([m4_divert_text], [m4_divert_text([NOTICE],[$1])],
  21        [ifdef([AC_DIVERT], [AC_DIVERT([NOTICE],[$1])],
  22               [AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
  23 $1
  24 AC_DIVERT_POP()])])])
  25
  26 dnl GLIB_IF_VAR_EQ (ENV_VAR, VALUE [, EQUALS_ACTION] [, ELSE_ACTION])
  27 AC_DEFUN(GLIB_IF_VAR_EQ,[
  28         case "$[$1]" in
  29         "[$2]"[)]
  30                 [$3]
  31                 ;;
  32         *[)]
  33                 [$4]
  34                 ;;
  35         esac
  36 ])
  37 dnl GLIB_STR_CONTAINS (SRC_STRING, SUB_STRING [, CONTAINS_ACTION] [, ELSE_ACTION])
  38 AC_DEFUN(GLIB_STR_CONTAINS,[
  39         case "[$1]" in
  40         *"[$2]"*[)]
  41                 [$3]
  42                 ;;
  43         *[)]
  44                 [$4]
  45                 ;;
  46         esac
  47 ])
  48 dnl GLIB_ADD_TO_VAR (ENV_VARIABLE, CHECK_STRING, ADD_STRING)
  49 AC_DEFUN(GLIB_ADD_TO_VAR,[
  50         GLIB_STR_CONTAINS($[$1], [$2], [$1]="$[$1]", [$1]="$[$1] [$3]")
  51 ])
  52
  53 # GLIB_SIZEOF (INCLUDES, TYPE, ALIAS)
  54 # ---------------------------------------------------------------
  55 # The definition here is based of that of AC_CHECK_SIZEOF
  56 AC_DEFUN([GLIB_SIZEOF],
  57 [AS_LITERAL_IF([$3], [],
  58                [AC_FATAL([$0: requires literal arguments])])dnl
  59 AC_CACHE_CHECK([size of $2], AS_TR_SH([glib_cv_sizeof_$3]),
  60 [ # The cast to unsigned long works around a bug in the HP C Compiler
  61   # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
  62   # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
  63   # This bug is HP SR number 8606223364.
  64   _AC_COMPUTE_INT([(long) (sizeof ($2))],
  65                   [AS_TR_SH([glib_cv_sizeof_$3])],
  66                   [AC_INCLUDES_DEFAULT([$1])],
  67                   [AC_MSG_ERROR([cannot compute sizeof ($2), 77])])
  68 ])dnl
  69 AC_DEFINE_UNQUOTED(GLIB_TR_CPP(glib_sizeof_$3), $AS_TR_SH([glib_cv_sizeof_$3]),
  70                    [The size of $3, as computed by sizeof.])
  71 ])# GLIB_SIZEOF
  72
  73 dnl GLIB_BYTE_CONTENTS (INCLUDES, TYPE, ALIAS, N_BYTES, INITIALIZER)
  74 AC_DEFUN(GLIB_BYTE_CONTENTS,
  75 [pushdef([glib_ByteContents], GLIB_TR_SH([glib_cv_byte_contents_$3]))dnl
  76 AC_CACHE_CHECK([byte contents of $5], glib_ByteContents,
  77 [AC_TRY_RUN([#include <stdio.h>
  78 $1
  79 main()
  80 {
  81   static $2 tv = $5;
  82   char *p = (char*) &tv;
  83   int i;
  84   FILE *f=fopen("conftestval", "w");
  85   if (!f) exit(1);
  86   for (i = 0; i < $4; i++)
  87     fprintf(f, "%s%d", i?",":"", *(p++));
  88   fprintf(f, "\n");
  89   exit(0);
  90 }],
  91    [glib_ByteContents=`cat conftestval`  dnl''
  92 ],
  93    [glib_ByteContents=no],
  94    [glib_ByteContents=no])])
  95 AC_DEFINE_UNQUOTED(GLIB_TR_CPP(glib_byte_contents_$3), [$[]glib_ByteContents],
  96         [Byte contents of $3])
  97 popdef([glib_ByteContents])dnl
  98 ])
  99
 100 # GLIB_CHECK_VALUE(SYMBOL, INCLUDES, ACTION-IF-FAIL)
 101 # ---------------------------------------------------------------
 102 AC_DEFUN([GLIB_CHECK_VALUE],
 103 [AC_CACHE_CHECK([value of $1], AS_TR_SH([glib_cv_value_$1]),
 104   [_AC_COMPUTE_INT([$1], AS_TR_SH([glib_cv_value_$1]), [$2], [$3])])
 105 ])dnl
 106
 107 # GLIB_CHECK_COMPILE_WARNINGS(PROGRAM, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 108 # ---------------------------------------------------------------------
 109 # Try to compile PROGRAM, check for warnings
 110 m4_define([GLIB_CHECK_COMPILE_WARNINGS],
 111 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
 112 rm -f conftest.$ac_objext
 113 glib_ac_compile_save="$ac_compile"
 114 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext'
 115 AS_IF([_AC_EVAL_STDERR($ac_compile) &&
 116          AC_TRY_COMMAND([(if test -s conftest.err; then false ; else true; fi)])],
 117       [$2],
 118       [echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD
 119 cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
 120 m4_ifvaln([$3],[$3])dnl])dnl
 121 ac_compile="$glib_ac_compile_save"
 122 rm -f conftest.$ac_objext conftest.err m4_ifval([$1], [conftest.$ac_ext])[]dnl
 123 ])# GLIB_CHECK_COMPILE_WARNINGS
 124
 125 # GLIB_ASSERT_SET(VARIABLE)
 126 # -------------------------
 127 AC_DEFUN([GLIB_ASSERT_SET],
 128 [if test "x${$1+set}" != "xset" ; then
 129   AC_MSG_ERROR($1 [must be set in cache file when cross-compiling.])
 130 fi
 131 ])dnl