m4/opj_check_lib.m4

   1 dnl Copyright (C) 2011 Vincent Torri <vtorri at univ-evry dot fr>
   2 dnl That code is public domain and can be freely used or copied.
   3
   4 dnl Macro that check if a library is in a specified directory.
   5
   6 dnl Usage: OPJ_CHECK_LIB_WITH_PREFIX(prefix, header, lib, func [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
   7 dnl Call AC_SUBST(THELIB_CFLAGS)
   8 dnl Call AC_SUBST(THELIB_LIBS)
   9 dnl where THELIB is the uppercase value of 'lib'
  10
  11 AC_DEFUN([OPJ_CHECK_LIB_WITH_PREFIX],
  12 [
  13
  14 m4_pushdef([UP], m4_toupper([$3]))
  15 m4_pushdef([DOWN], m4_tolower([$3]))
  16
  17 __opj_prefix=$1
  18 __opj_header=$2
  19 __opj_lib=$3
  20 __opj_func=$4
  21 __opj_have_dep="no"
  22
  23 save_CPPFLAGS=${CPPFLAGS}
  24 save_LDFLAGS=${LDFLAGS}
  25 save_LIBS=${LIBS}
  26
  27 if test "x${__opj_prefix}" = "x" ; then
  28    CPPFLAGS="${CPPFLAGS} $UP[_CFLAGS]"
  29    LDFLAGS="${LDFLAGS} $UP[_LIBS]"
  30 else
  31    CPPFLAGS="${CPPFLAGS} -I${__opj_prefix}/include"
  32    LDFLAGS="${LDFLAGS} -L${__opj_prefix}/lib"
  33    LIBS="${LIBS} -l${__opj_lib}"
  34 fi
  35
  36 AC_LINK_IFELSE(
  37    [AC_LANG_PROGRAM(
  38        [[
  39 #include <${__opj_header}>
  40        ]],
  41        [[
  42 ${__opj_func}();
  43        ]])],
  44        [__opj_have_dep="yes"],
  45        [__opj_have_dep="no"])
  46
  47 CPPFLAGS=${save_CPPFLAGS}
  48 LDFLAGS=${save_LDFLAGS}
  49 LIBS=${save_LIBS}
  50
  51 if test "x${__opj_prefix}" = "x" ; then
  52    AC_MSG_CHECKING([whether ]UP[ library is available in standard or predefined directories])
  53 else
  54    AC_MSG_CHECKING([whether ]UP[ library is available in ${__opj_prefix}])
  55 fi
  56 AC_MSG_RESULT([${__opj_have_dep}])
  57
  58 if test "x${__opj_have_dep}" = "xyes" && ! test "x${__opj_prefix}" = "x"; then
  59    if test "x${UP[]_CFLAGS}" = "x" ; then
  60       UP[]_CFLAGS="-I${__opj_prefix}/include"
  61    fi
  62    if test "x${UP[]_LIBS}" = "x" ; then
  63       UP[]_LIBS="-L${__opj_prefix}/lib -l${__opj_lib}"
  64    fi
  65 fi
  66
  67 AS_IF([test "x${__opj_have_dep}" = "xyes"], [$5], [$6])
  68
  69 m4_popdef([UP])
  70 m4_popdef([DOWN])
  71
  72 ])
  73
  74 dnl Macro that check if a library is in a set of directories.
  75
  76 dnl Usage: OPJ_CHECK_LIB(header, lib, func [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
  77
  78 AC_DEFUN([OPJ_CHECK_LIB],
  79 [
  80
  81 m4_pushdef([UP], m4_toupper([$2]))
  82
  83 __opj_have_dep="no"
  84
  85 OPJ_CHECK_LIB_WITH_PREFIX([],
  86    [$1],
  87    [$2],
  88    [$3],
  89    [__opj_have_dep="yes"],
  90    [__opj_have_dep="no"])
  91
  92 if ! test "x${__opj_have_dep}" = "xyes" ; then
  93    OPJ_CHECK_LIB_WITH_PREFIX([/usr],
  94       [$1],
  95       [$2],
  96       [$3],
  97       [__opj_have_dep="yes"],
  98       [__opj_have_dep="no"])
  99 fi
 100
 101 if ! test "x${__opj_have_dep}" = "xyes" ; then
 102    OPJ_CHECK_LIB_WITH_PREFIX([/usr/local],
 103       [$1],
 104       [$2],
 105       [$3],
 106       [__opj_have_dep="yes"],
 107       [__opj_have_dep="no"])
 108 fi
 109
 110 if ! test "x${__opj_have_dep}" = "xyes" ; then
 111    OPJ_CHECK_LIB_WITH_PREFIX([/opt/local],
 112       [$1],
 113       [$2],
 114       [$3],
 115       [__opj_have_dep="yes"],
 116       [__opj_have_dep="no"])
 117 fi
 118
 119 AC_ARG_VAR(UP[_CFLAGS], [preprocessor flags for lib$2])
 120 AC_SUBST(UP[_CFLAGS])
 121 AC_ARG_VAR(UP[_LIBS], [linker flags for lib$2])
 122 AC_SUBST(UP[_LIBS])
 123
 124 AS_IF([test "x${__opj_have_dep}" = "xyes"], [$4], [$5])
 125
 126 m4_popdef([UP])
 127
 128 ])