pkg_config.m4 (4290B)
1 # PKG_PROG_PKG_CONFIG([MIN-VERSION]) 2 # ---------------------------------- 3 AC_DEFUN([PKG_PROG_PKG_CONFIG], 4 [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) 5 m4_pattern_allow([^PKG_CONFIG(_PATH)?$]) 6 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) 7 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) 8 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) 9 10 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then 11 AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) 12 fi 13 if test -n "$PKG_CONFIG"; then 14 _pkg_min_version=m4_default([$1], [0.9.0]) 15 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) 16 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then 17 AC_MSG_RESULT([yes]) 18 else 19 AC_MSG_RESULT([no]) 20 PKG_CONFIG="" 21 fi 22 fi[]dnl 23 ])# PKG_PROG_PKG_CONFIG 24 25 # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 26 # 27 # Check to see whether a particular set of modules exists. Similar 28 # to PKG_CHECK_MODULES(), but does not set variables or print errors. 29 # 30 # Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 31 # only at the first occurence in configure.ac, so if the first place 32 # it's called might be skipped (such as if it is within an "if", you 33 # have to call PKG_CHECK_EXISTS manually 34 # -------------------------------------------------------------- 35 AC_DEFUN([PKG_CHECK_EXISTS], 36 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 37 if test -n "$PKG_CONFIG" && \ 38 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then 39 m4_default([$2], [:]) 40 m4_ifvaln([$3], [else 41 $3])dnl 42 fi]) 43 44 # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) 45 # --------------------------------------------- 46 m4_define([_PKG_CONFIG], 47 [if test -n "$$1"; then 48 pkg_cv_[]$1="$$1" 49 elif test -n "$PKG_CONFIG"; then 50 PKG_CHECK_EXISTS([$3], 51 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`], 52 [pkg_failed=yes]) 53 else 54 pkg_failed=untried 55 fi[]dnl 56 ])# _PKG_CONFIG 57 58 # _PKG_SHORT_ERRORS_SUPPORTED 59 # ----------------------------- 60 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], 61 [AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 62 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then 63 _pkg_short_errors_supported=yes 64 else 65 _pkg_short_errors_supported=no 66 fi[]dnl 67 ])# _PKG_SHORT_ERRORS_SUPPORTED 68 69 70 # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], 71 # [ACTION-IF-NOT-FOUND]) 72 # 73 # 74 # Note that if there is a possibility the first call to 75 # PKG_CHECK_MODULES might not happen, you should be sure to include an 76 # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac 77 # 78 # 79 # -------------------------------------------------------------- 80 AC_DEFUN([PKG_CHECK_MODULES], 81 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 82 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl 83 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl 84 85 pkg_failed=no 86 AC_MSG_CHECKING([for $1]) 87 88 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) 89 _PKG_CONFIG([$1][_LIBS], [libs], [$2]) 90 91 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS 92 and $1[]_LIBS to avoid the need to call pkg-config. 93 See the pkg-config man page for more details.]) 94 95 if test $pkg_failed = yes; then 96 AC_MSG_RESULT([no]) 97 _PKG_SHORT_ERRORS_SUPPORTED 98 if test $_pkg_short_errors_supported = yes; then 99 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1` 100 else 101 $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1` 102 fi 103 # Put the nasty error message in config.log where it belongs 104 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD 105 106 m4_default([$4], [AC_MSG_ERROR( 107 [Package requirements ($2) were not met: 108 109 $$1_PKG_ERRORS 110 111 Consider adjusting the PKG_CONFIG_PATH environment variable if you 112 installed software in a non-standard prefix. 113 114 _PKG_TEXT])dnl 115 ]) 116 elif test $pkg_failed = untried; then 117 AC_MSG_RESULT([no]) 118 m4_default([$4], [AC_MSG_FAILURE( 119 [The pkg-config script could not be found or is too old. Make sure it 120 is in your PATH or set the PKG_CONFIG environment variable to the full 121 path to pkg-config. 122 123 _PKG_TEXT 124 125 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl 126 ]) 127 else 128 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS 129 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS 130 AC_MSG_RESULT([yes]) 131 $3 132 fi[]dnl 133 ])# PKG_CHECK_MODULES