m4_define([version_major],   [1])
m4_define([version_minor],   [0])
m4_define([version_revision],[rc5])

AC_INIT([libabigail],
	[version_major.version_minor.version_revision],
	[http://sourceware.org/bugzilla],
	[libabigail],
	[http://sourceware.org/libabigail])

AC_PREREQ([2.63])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_HEADER([config.h])
AC_CONFIG_SRCDIR([README])
AC_CONFIG_MACRO_DIR([m4])

AM_INIT_AUTOMAKE([1.11.1 foreign subdir-objects tar-ustar parallel-tests])
AM_MAINTAINER_MODE([enable])

AM_SILENT_RULES([yes])

VERSION_MAJOR=version_major
VERSION_MINOR=version_minor
VERSION_REVISION=version_revision

AC_SUBST(VERSION_MAJOR)
AC_SUBST(VERSION_MINOR)
AC_SUBST(VERSION_REVISION)

AC_ARG_ENABLE(rpm,
	      AS_HELP_STRING([--enable-rpm=yes|no|auto],
			     [enable the support of rpm in abipkgdiff (default is auto)]),
	      ENABLE_RPM=$enableval,
	      ENABLE_RPM=auto)

AC_ARG_ENABLE(deb,
	      AS_HELP_STRING([--enable-deb=yes|no|auto],
			     [enable the support of deb in abipkgdiff (default is auto)]),
	      ENABLE_DEB=$enableval,
	      ENABLE_DEB=auto)

AC_ARG_ENABLE(tar,
	      AS_HELP_STRING([--enable-tar=yes|no|auto],
			     [enable the support of GNU tar archives in abipkgdiff (default is auto)]),
	      ENABLE_TAR=$enableval,
	      ENABLE_TAR=auto)

AC_ARG_ENABLE(zip-archive,
	      AS_HELP_STRING([--enable-zip-archive=yes|no|auto],
			     [enable bundling of TUs in zip archives (default is no)]),
	      ENABLE_ZIP_ARCHIVE=$enableval,
	      ENABLE_ZIP_ARCHIVE=no)


AC_ARG_ENABLE(cxx11,
	      AS_HELP_STRING([--enable-cxx11=yes|no],
			     [enable features that use the C++11 compiler]),
	      ENABLE_CXX11=$enableval,
	      ENABLE_CXX11=no)

AC_ARG_ENABLE(apidoc,
	      AS_HELP_STRING([--enable-apidoc=yes|no|auto],
			     [enable generation of the apidoc in html]),
	      ENABLE_APIDOC=$enableval,
	      ENABLE_APIDOC=auto)

AC_ARG_ENABLE(manual,
	      AS_HELP_STRING([--enable-manual=yes|no|auto],
			     [enable generation of the manual in html]),
	      ENABLE_MANUAL=$enableval,
	      ENABLE_MANUAL=auto)

AC_ARG_ENABLE([bash-completion],
	      AS_HELP_STRING([--enable-bash-completion=yes|no|auto],
			     [enable using completion files for tools]),
	      ENABLE_BASH_COMPLETION=$enableval,
	      ENABLE_BASH_COMPLETION=auto)

dnl *************************************************
dnl check for dependencies
dnl *************************************************

AC_PROG_CXX
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_INSTALL

LT_PREREQ([2.2])
LT_INIT

AC_LANG([C++])
AC_LANG_COMPILER_REQUIRE

dnl Check for dependency: libelf, libdw, libebl (elfutils)
dnl Note that we need to use at least elfutils 0.159 but
dnl at that time elfutils didnt have pkgconfig capabilities
dnl  to easily query for its version.
ELF_LIBS=
AC_CHECK_LIB([elf], [elf_end], [ELF_LIBS="-lelf"])
AC_CHECK_HEADER([libelf.h],
		[],
		[AC_MSG_ERROR([could not find libelf.h])])

DW_LIBS=
AC_CHECK_LIB(dw, dwfl_begin, [DW_LIBS=-ldw])
AC_CHECK_HEADER(elfutils/libdwfl.h,
		[],
		[AC_MSG_ERROR([could not find elfutils/libdwfl.h installed])])


if test x$ELF_LIBS = x; then
   AC_MSG_ERROR([could not find elfutils elf library installed])
fi

if test x$DW_LIBS = x; then
   AC_MSG_ERROR([could not find elfutils dwarf library installed])
fi

AC_SUBST(DW_LIBS)
AC_SUBST([ELF_LIBS])

dnl Check for dependency: libxml
LIBXML2_VERSION=2.6.22
PKG_CHECK_MODULES(XML, libxml-2.0 >= $LIBXML2_VERSION)

AC_SUBST(LIBXML2_VERSION)
AC_SUBST(XML_LIBS)
AC_SUBST(XML_CFLAGS)

dnl Check for some programs like rm, mkdir, etc ...
AC_CHECK_PROG(HAS_RM, rm, yes, no)
if test x$HAS_RM = xno; then
   AC_MSG_ERROR([could not find the program 'rm' installed])
fi

AC_CHECK_PROG(HAS_MKDIR, mkdir, yes, no)
if test x$HAS_MKDIR = xno; then
   AC_MSG_ERROR([could not find the program 'mkdir' installed])
fi

dnl Check for the rpm2cpio and cpio programs
if test x$ENABLE_RPM = xyes -o x$ENABLE_RPM = xauto; then
  AC_CHECK_PROG(HAS_RPM2CPIO, rpm2cpio, yes, no)
  AC_CHECK_PROG(HAS_CPIO, cpio, yes, no)

  if test x$ENABLE_RPM = xauto; then
    if test x$HAS_RPM2CPIO = xyes -a x$HAS_CPIO = xyes; then
       ENABLE_RPM=yes
    fi
  fi
fi

if test x$ENABLE_RPM = xyes; then
   AC_DEFINE([WITH_RPM], 1, [compile the rpm package support in abipkgdiff])
   AC_MSG_NOTICE(rpm support in abipkgdiff is enabled);
else
   AC_MSG_NOTICE(rpm support in abipkgdiff is disabled);
fi

AM_CONDITIONAL(ENABLE_RPM, test x$ENABLE_RPM = xyes)

dnl Check for the dpkg program
if test x$ENABLE_DEB = xauto -o x$ENABLE_DEB = xyes; then
   AC_CHECK_PROG(HAS_DPKG, dpkg, yes, no)

   if test x$ENABLE_DEB = xauto; then
     if test x$HAS_DPKG = xyes; then
       ENABLE_DEB=yes
     else
       ENABLE_DEB=no
    fi
   fi
fi

if test x$ENABLE_DEB = xyes; then
   AC_DEFINE([WITH_DEB], 1, [compile the deb package support in abipkgdiff])
   AC_MSG_NOTICE(deb support in abipkgdiff is enabled);
else
   AC_MSG_NOTICE(deb support in abipkgdiff is disabled);
fi

AM_CONDITIONAL(ENABLE_DEB, test x$ENABLE_DEB = xyes)

dnl Check for the tar program
if test x$ENABLE_TAR = xauto -o x$ENABLE_TAR = xyes; then
   AC_CHECK_PROG(HAS_TAR, tar, yes, no)

   if test x$ENABLE_TAR = xauto; then
     if test x$HAS_TAR = xyes; then
       ENABLE_TAR=yes
    fi
   fi
fi

if test x$ENABLE_TAR = xyes; then
   AC_DEFINE([WITH_TAR], 1, [compile the GNU tar archive support in abipkgdiff])
   AC_MSG_NOTICE(GNU tar support in abipkgdiff is enabled);
else
   AC_MSG_NOTICE(GNU tar support in abipkgdiff is disabled);
fi

AM_CONDITIONAL(ENABLE_TAR, test x$ENABLE_TAR = xyes)

dnl Check for the bash-completion package
if test x$ENABLE_BASH_COMPLETION = xauto -o x$ENABLE_BASH_COMPLETION = xyes; then
   AC_CHECK_PROG(HAS_BASH_COMPLETION, bash-completion, yes, no)

   if test x$ENABLE_BASH_COMPLETION = xauto; then
     if test x$HAS_BASH_COMPLETION = xyes; then
       ENABLE_BASH_COMPLETION=yes
    fi
   fi
fi

if test x$ENABLE_BASH_COMPLETION = xyes; then
   AC_MSG_NOTICE(bash-completion support in libabigail is enabled);
else
   AC_MSG_NOTICE(bash-completion support in libabigail is disabled);
fi

AM_CONDITIONAL(ENABLE_BASH_COMPLETION, test x$ENABLE_BASH_COMPLETION = xyes)

dnl Check for dependency: libzip
LIBZIP_VERSION=0.10.1

HAS_LIBZIP=no
# The below doesn't seem to work on my box for a reason.  Let's write
# the damn thing by hand:
# PKG_CHECK_EXISTS([libzip >= $LIBZIP_VERSION], [HAS_LIBZIP=yes], [HAS_LIBZIP=no])

if $PKG_CONFIG --exists --print-errors "libzip >= $LIBZIP_VERSION"; then
   AC_MSG_NOTICE(found libzip version $LIBZIP_VERSION)
   HAS_LIBZIP=yes
else
   AC_MSG_NOTICE(no libzip >= $LIBZIP_VERSION has been found)
   HAS_LIBZIP=no
fi

if test x$ENABLE_ZIP_ARCHIVE = xauto; then
   if test x$HAS_LIBZIP = xyes; then
      ENABLE_ZIP_ARCHIVE=yes;
   else
      ENABLE_ZIP_ARCHIVE=no
   fi
fi

if test x$ENABLE_ZIP_ARCHIVE = xyes; then
   AC_MSG_NOTICE(the zip-archive feature is enabled)
else
   AC_MSG_NOTICE(the zip-archive feature is disabled)
fi

FOUND_LIBZIP=no
if test x$ENABLE_ZIP_ARCHIVE = xyes; then
   PKG_CHECK_MODULES(LIBZIP, libzip >= $LIBZIP_VERSION)
   FOUND_LIBZIP=yes
   AC_SUBST(LIBZIP_VERSION)
   AC_SUBST(LIBZIP_LIBS)
   AC_SUBST(LIBZIP_CFLAGS)
   AC_DEFINE([WITH_ZIP_ARCHIVE], 1, [compile the zip archive support])
   AC_DEFINE([HAVE_LIBZIP], 1, [Defined to 1 if the libzip library is available])
fi

AM_CONDITIONAL(ENABLE_ZIP_ARCHIVE, test x$ENABLE_ZIP_ARCHIVE = xyes)
DEPS_CPPFLAGS="$XML_CFLAGS $LIBZIP_CFLAGS"
AC_SUBST(DEPS_CPPFLAGS)

dnl Handle conditional use of a C++11 compiler
if test x$ENABLE_CXX11 = xyes; then
   AC_DEFINE([WITH_CXX11], 1, [Defined to 1 if a C++11 compiler is used])
fi

AM_CONDITIONAL(ENABLE_CXX11, test x$ENABLE_CXX11 = xyes)

dnl Check for the presence of doxygen program

if test x$ENABLE_APIDOC != xno; then
  AC_CHECK_PROG(FOUND_DOXYGEN, doxygen, yes, no)
  if test x$ENABLE_APIDOC = xauto; then
    if test x$FOUND_DOXYGEN = xyes; then
      ENABLE_APIDOC=yes
    else
      ENABLE_APIDOC=no
    fi
  fi
fi
AM_CONDITIONAL(ENABLE_APIDOC, test x$ENABLE_APIDOC = xyes)

dnl Check for the presence of the sphinx-build program

if test x$ENABLE_MANUAL != xno; then
  AC_CHECK_PROG(FOUND_SPHINX_BUILD, sphinx-build, yes, no)
  if test x$ENABLE_MANUAL = xauto; then
    if test x$FOUND_SPHINX_BUILD = xyes; then
      ENABLE_MANUAL=yes
    else
      ENABLE_MANUAL=no
    fi
  fi
fi
AM_CONDITIONAL(ENABLE_MANUAL, test x$ENABLE_MANUAL = xyes)

dnl Set the list of libraries libabigail depends on

DEPS_LIBS="$XML_LIBS $LIBZIP_LIBS $ELF_LIBS $DW_LIBS"
AC_SUBST(DEPS_LIBS)

if test x$ABIGAIL_DEVEL != x; then
   CFLAGS="-g -Wall -Wextra -Werror"
   CXXFLAGS="-g -Wall -Wextra -Werror"
fi

HAS_EM_AARCH64=no
AC_CHECK_DECL([EM_AARCH64],
              [HAS_EM_AARCH64=yes],
              [HAS_EM_AARCH64=no],
              [[#include <elf.h>]])

if test x$HAS_EM_AARCH64 = xyes; then
  AC_DEFINE([HAVE_EM_AARCH64_MACRO],
                 1,
            [Defined to 1 if elf.h has EM_AARCH64 macro defined])
fi

HAS_EM_TILEPRO=no
AC_CHECK_DECL([EM_TILEPRO],
              [HAS_EM_TILEPRO=yes],
              [HAS_EM_TILEPRO=no],
              [[#include <elf.h>]])

if test x$HAS_EM_TILEPRO = xyes; then
  AC_DEFINE([HAVE_EM_TILEPRO_MACRO],
                 1,
            [Defined to 1 if elf.h has EM_TILEPR0 macro defined])
fi

HAS_EM_TILEGX=no
AC_CHECK_DECL([EM_TILEGX],
              [HAS_EM_TILEGX=yes],
              [HAS_EM_TILEGX=no],
              [[#include <elf.h>]])

if test x$HAS_EM_TILEGX = xyes; then
  AC_DEFINE([HAVE_EM_TILEGX_MACRO],
                 1,
            [Defined to 1 if elf.h has EM_TILEGX macro defined])
fi

dnl Set large files support
AC_SYS_LARGEFILE

AC_CONFIG_FILES([Makefile
libabigail.pc
  include/Makefile
  include/abg-version.h
  doc/Makefile
    doc/manuals/Makefile
  src/Makefile
  tools/Makefile
  tests/Makefile
    tests/data/Makefile
    bash-completion/Makefile])

dnl Some test scripts are generated by autofoo.
AC_CONFIG_FILES([tests/runtestcanonicalizetypes.sh], [chmod +x tests/runtestcanonicalizetypes.sh])

AC_OUTPUT

AC_MSG_NOTICE([
=====================================================================
	Libabigail: $VERSION_MAJOR.$VERSION_MINOR.$VERSION_REVISION
=====================================================================

		Here is the configuration of the package:

    Prefix                                         : ${prefix}
    Source code location                           : ${srcdir}
    C Compiler                                     : ${CC}
    C++ Compiler		                   : ${CXX}

 OPTIONAL FEATURES:
    Enable zip archives                            : ${ENABLE_ZIP_ARCHIVE}
    Use a C++-11 compiler                          : ${ENABLE_CXX11}
    Enable rpm support in abipkgdiff               : ${ENABLE_RPM}
    Enable deb support in abipkgdiff               : ${ENABLE_DEB}
    Enable GNU tar archive support in abipkgdiff   : ${ENABLE_TAR}
    Enable bash completion	                   : ${ENABLE_BASH_COMPLETION}
    Generate html apidoc	                   : ${ENABLE_APIDOC}
    Generate html manual	                   : ${ENABLE_MANUAL}
])