kc3-lang/SDL/acinclude/pkg_config.m4

Branch : - branch - v2.28 - tag -

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  Commit

• Author : Sam Lantinga
  Date : 2019-03-16 17:39:15
  Hash : 40e3c015
  Message : Added missing PKG_CONFIG macros

• acinclude/pkg_config.m4

• # PKG_PROG_PKG_CONFIG([MIN-VERSION])
  # ----------------------------------
  AC_DEFUN([PKG_PROG_PKG_CONFIG],
  [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
  m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
  AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
  AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
  AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
  
  if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
  	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
  fi
  if test -n "$PKG_CONFIG"; then
  	_pkg_min_version=m4_default([$1], [0.9.0])
  	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
  	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
  		AC_MSG_RESULT([yes])
  	else
  		AC_MSG_RESULT([no])
  		PKG_CONFIG=""
  	fi
  fi[]dnl
  ])# PKG_PROG_PKG_CONFIG
  
  # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
  #
  # Check to see whether a particular set of modules exists.  Similar
  # to PKG_CHECK_MODULES(), but does not set variables or print errors.
  #
  # Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  # only at the first occurence in configure.ac, so if the first place
  # it's called might be skipped (such as if it is within an "if", you
  # have to call PKG_CHECK_EXISTS manually
  # --------------------------------------------------------------
  AC_DEFUN([PKG_CHECK_EXISTS],
  [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  if test -n "$PKG_CONFIG" && \
      AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
    m4_default([$2], [:])
  m4_ifvaln([$3], [else
    $3])dnl
  fi])
  
  # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
  # ---------------------------------------------
  m4_define([_PKG_CONFIG],
  [if test -n "$$1"; then
      pkg_cv_[]$1="$$1"
   elif test -n "$PKG_CONFIG"; then
      PKG_CHECK_EXISTS([$3],
                       [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
  		     [pkg_failed=yes])
   else
      pkg_failed=untried
  fi[]dnl
  ])# _PKG_CONFIG
  
  # _PKG_SHORT_ERRORS_SUPPORTED
  # -----------------------------
  AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
  [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
          _pkg_short_errors_supported=yes
  else
          _pkg_short_errors_supported=no
  fi[]dnl
  ])# _PKG_SHORT_ERRORS_SUPPORTED
  
  
  # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
  # [ACTION-IF-NOT-FOUND])
  #
  #
  # Note that if there is a possibility the first call to
  # PKG_CHECK_MODULES might not happen, you should be sure to include an
  # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
  #
  #
  # --------------------------------------------------------------
  AC_DEFUN([PKG_CHECK_MODULES],
  [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
  AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
  
  pkg_failed=no
  AC_MSG_CHECKING([for $1])
  
  _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
  _PKG_CONFIG([$1][_LIBS], [libs], [$2])
  
  m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
  and $1[]_LIBS to avoid the need to call pkg-config.
  See the pkg-config man page for more details.])
  
  if test $pkg_failed = yes; then
     	AC_MSG_RESULT([no])
          _PKG_SHORT_ERRORS_SUPPORTED
          if test $_pkg_short_errors_supported = yes; then
  	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
          else 
  	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
          fi
  	# Put the nasty error message in config.log where it belongs
  	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
  
  	m4_default([$4], [AC_MSG_ERROR(
  [Package requirements ($2) were not met:
  
  $$1_PKG_ERRORS
  
  Consider adjusting the PKG_CONFIG_PATH environment variable if you
  installed software in a non-standard prefix.
  
  _PKG_TEXT])dnl
          ])
  elif test $pkg_failed = untried; then
       	AC_MSG_RESULT([no])
  	m4_default([$4], [AC_MSG_FAILURE(
  [The pkg-config script could not be found or is too old.  Make sure it
  is in your PATH or set the PKG_CONFIG environment variable to the full
  path to pkg-config.
  
  _PKG_TEXT
  
  To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl
          ])
  else
  	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
  	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
          AC_MSG_RESULT([yes])
  	$3
  fi[]dnl
  ])# PKG_CHECK_MODULES