dnl Process this file with autoconf to produce a configure script.

AC_INIT(libdwarf.h)

AC_CONFIG_HEADER(config.h)

AC_PROG_CC

AC_C_BIGENDIAN

AC_GCC_TRADITIONAL

AC_PROG_INSTALL

AC_CHECK_TOOL(RANLIB, ranlib, :)

AC_CHECK_TOOL(AR, ar)

dnl AC_ARFLAGS

AC_CHECK_HEADERS(alloca.h elf.h elfaccess.h libelf.h libelf/libelf.h  sys/types.h sys/ia64/elf.h)

AC_CHECK_LIB(elf,elf64_getehdr,

  AC_DEFINE(HAVE_ELF64_GETEHDR,1,

	[Define to 1 if the elf64_getehdr function is in libelf.a.]))

AC_CHECK_LIB(elf,elf64_getshdr,

  AC_DEFINE(HAVE_ELF64_GETSHDR,1,

	[Define to 1 if the elf64_getshdr function is in libelf.a.]))

AC_TRY_COMPILE( ,  __uint32_t p; p = 3; ,AC_DEFINE(HAVE___UINT32_T,1,

	[See if __uint32_t is predefined in the compiler.]))

AC_TRY_COMPILE( ,  __uint64_t p; p = 3; ,AC_DEFINE(HAVE___UINT64_T,1,

	[See if __uint64_t is predefined in the compiler.]))

AC_TRY_COMPILE([#include <sys/types.h>],[  __uint32_t p; p = 3;] ,

  AC_DEFINE(HAVE___UINT32_T_IN_SYS_TYPES_H,1,

	[Define 1 if sys/types.h defines __uint32_t.]))

AC_TRY_COMPILE([#include <sys/types.h>],[  __uint64_t p; p = 3;] ,

  AC_DEFINE(HAVE___UINT64_T_IN_SYS_TYPES_H,1,

	[Define 1 if sys/types.h defines __uint64_t.]))

dnl checking for ia 64 types, which might be enums, using HAVE_R_IA_64_DIR32LSB

dnl to stand in for a small set.

AC_TRY_COMPILE([#include <elf.h>],[  int p; p = R_IA_64_DIR32LSB;] ,

  AC_DEFINE(HAVE_R_IA_64_DIR32LSB,1,

	[Define 1 if  R_IA_64_DIR32LSB is defined (might be enum value).]))

AC_TRY_COMPILE([

#include <libelf.h>

],[  int p; p = 0; ] ,

  AC_DEFINE(HAVE_RAW_LIBELF_OK,1,

	[Define 1 if plain libelf builds.]))

AC_TRY_COMPILE([

#define _GNU_SOURCE

#include <libelf.h>

],[  off64_t  p; p = 0;] ,

  AC_DEFINE(HAVE_LIBELF_OFF64_OK,1,

	[Define 1 if  off64 is defined via libelf with GNU_SOURCE.]))

dnl the existence of sgidefs.h does not prove it's truly SGI, nor

dnl prove that __uint32_t or __uint64_t is defined therein.

AC_TRY_COMPILE([#include <sgidefs.h>],[  __uint32_t p; p = 27;] ,

  AC_DEFINE(HAVE___UINT32_T_IN_SGIDEFS_H,1,

        [Define 1 if __uint32_t is in sgidefs.h.])) 

AC_TRY_COMPILE([#include <sgidefs.h>],[  __uint64_t p; p = 27;] ,

  AC_DEFINE(HAVE___UINT64_T_IN_SGIDEFS_H,1,

        [Define 1 if __uint64_t is in sgidefs.h.])) 

AC_TRY_COMPILE([#include <sgidefs.h>],[  __uint64_t p; p = 27;] ,

  AC_DEFINE(HAVE___UINT64_T_IN_SGIDEFS_H,1,

        [Define 1 if  is in sgidefs.h.])) 

AC_SUBST(build_shared,[])

AC_SUBST(build_nonshared,[libdwarf.a])

AC_ARG_ENABLE(shared,AC_HELP_STRING([--enable-shared],

		[build shared library libdwarf.so (default is NO)]),

		[ AC_SUBST(build_shared,[libdwarf.so]) ],

		[  AC_SUBST(build_shared,[none]) ])

AC_ARG_ENABLE(nonshared,AC_HELP_STRING([--enable-nonshared],

		[build archive library libdwarf.a (default is YES)]),

		[ AC_SUBST(build_nonshared,[libdwarf.a]) ]

		[ AC_SUBST(build_nonshared,[none]) ])

dnl Just assume, if old ia64 R_IA_64_DIR32LSB name present, 

dnl compatibility with cygnus before

dnl HAVE_DWARF2_99_EXTENSION defined.

dnl Only applies to producer code, as consumer adapts itself.

dnl This is not the right test, really.

AC_TRY_COMPILE([#include <elf.h>],[  int p; p = R_IA_64_DIR32LSB;] ,

  AC_DEFINE(HAVE_OLD_DWARF2_32BIT_OFFSET,1,

	[Define 1 if want producer to build with only 32bit section offsets per strict dwarf2] ),

  AC_DEFINE(HAVE_DWARF2_99_EXTENSION,1,

	[Define 1 if want producer to build with 32/64bit section offsets per dwarf3] )) 

AC_OUTPUT(Makefile)