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_LIBS=${LIBS}
  25
  26 if test "x$UP[_CFLAGS]" != "x"; then
  27    CPPFLAGS="${CPPFLAGS} $UP[_CFLAGS]"
  28 else
  29    if test "x${__opj_prefix}" != "x" ; then
  30      __opj_CPPFLAGS="-I${__opj_prefix}/include"
  31    else
  32      __opj_CPPFLAGS=""
  33    fi
  34    CPPFLAGS="${CPPFLAGS} ${__opj_CPPFLAGS}"
  35 fi
  36
  37 if test "x$UP[_LIBS]" != "x"; then
  38    LIBS="${LIBS} $UP[_LIBS]"
  39 else
  40    if test "x${__opj_prefix}" != "x" ; then
  41      __opj_LIBS="-L${__opj_prefix}/lib -l${__opj_lib}"
  42    else
  43      __opj_LIBS="-l${__opj_lib}"
  44    fi
  45    LIBS="${LIBS} ${__opj_LIBS}"
  46 fi
  47
  48 AC_LINK_IFELSE(
  49    [AC_LANG_PROGRAM(
  50        [[
  51 #include <${__opj_header}>
  52        ]],
  53        [[
  54 ${__opj_func}();
  55        ]])],
  56        [__opj_have_dep="yes"],
  57        [__opj_have_dep="no"])
  58
  59 CPPFLAGS=${save_CPPFLAGS}
  60 LIBS=${save_LIBS}
  61
  62 if test "x${__opj_prefix}" = "x" ; then
  63    AC_MSG_CHECKING([whether ]UP[ library is available in standard or predefined directories])
  64 else
  65    AC_MSG_CHECKING([whether ]UP[ library is available in ${__opj_prefix}])
  66 fi
  67 AC_MSG_RESULT([${__opj_have_dep}])
  68
  69 if test "x${__opj_have_dep}" = "xyes"; then
  70    if test "x${UP[]_CFLAGS}" = "x" ; then
  71       UP[]_CFLAGS="${__opj_CPPFLAGS}"
  72    fi
  73    if test "x${UP[]_LIBS}" = "x" ; then
  74       UP[]_LIBS="${__opj_LIBS}"
  75    fi
  76 fi
  77
  78 AS_IF([test "x${__opj_have_dep}" = "xyes"], [$5], [$6])
  79
  80 m4_popdef([UP])
  81 m4_popdef([DOWN])
  82
  83 ])
  84
  85 dnl Macro that check if a library is in a set of directories.
  86
  87 dnl Usage: OPJ_CHECK_LIB(header, lib, func [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
  88
  89 AC_DEFUN([OPJ_CHECK_LIB],
  90 [
  91
  92 m4_pushdef([UP], m4_toupper([$2]))
  93
  94 __opj_have_dep="no"
  95
  96 OPJ_CHECK_LIB_WITH_PREFIX([],
  97    [$1],
  98    [$2],
  99    [$3],
 100    [__opj_have_dep="yes"],
 101    [__opj_have_dep="no"])
 102
 103 if ! test "x${__opj_have_dep}" = "xyes" ; then
 104    OPJ_CHECK_LIB_WITH_PREFIX([/usr],
 105       [$1],
 106       [$2],
 107       [$3],
 108       [__opj_have_dep="yes"],
 109       [__opj_have_dep="no"])
 110 fi
 111
 112 if ! test "x${__opj_have_dep}" = "xyes" ; then
 113    OPJ_CHECK_LIB_WITH_PREFIX([/usr/local],
 114       [$1],
 115       [$2],
 116       [$3],
 117       [__opj_have_dep="yes"],
 118       [__opj_have_dep="no"])
 119 fi
 120
 121 if ! test "x${__opj_have_dep}" = "xyes" ; then
 122    OPJ_CHECK_LIB_WITH_PREFIX([/opt/local],
 123       [$1],
 124       [$2],
 125       [$3],
 126       [__opj_have_dep="yes"],
 127       [__opj_have_dep="no"])
 128 fi
 129
 130 AC_ARG_VAR(UP[_CFLAGS], [preprocessor flags for lib$2])
 131 AC_SUBST(UP[_CFLAGS])
 132 AC_ARG_VAR(UP[_LIBS], [linker flags for lib$2])
 133 AC_SUBST(UP[_LIBS])
 134
 135 AS_IF([test "x${__opj_have_dep}" = "xyes"], [$4], [$5])
 136
 137 m4_popdef([UP])
 138
 139 ])