cygclass/utils.cygclass

   1 ################################################################################
   2 #
   3 # utils.cygclass - assortment of miscellaneous functions
   4 #
   5 # Part of cygport - Cygwin packaging application
   6 # Copyright (C) 2006-2020 Cygport authors
   7 # Provided by the Cygwin project <https://cygwin.com/>
   8 #
   9 # cygport is free software: you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation, either version 3 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # cygport is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with cygport.  If not, see <https://www.gnu.org/licenses/>.
  21 #
  22 ################################################################################
  23
  24 #****h* Cygclasses/utils.cygclass
  25 #  DESCRIPTION
  26 #  This cygclass contains miscellaneous functions.  Currently defined herein are:
  27 #  * check_header
  28 #  * check_lib
  29 #  * check_pkg_config
  30 #****
  31
  32 #****f* Checks/check_header
  33 #  SYNOPSIS
  34 #  inherit utils
  35 #  check_header [-IDIRECTORY] [-IDIRECTORY2] ... HEADER [HEADER2] ...
  36 #  DESCRIPTION
  37 #  Checks for the presence of the given header(s).  Directories can be added
  38 #  to the default include path by prefixing them with the -I flag.  Returns
  39 #  TRUE if all libraries are found, else FALSE.
  40 #****
  41 check_header() {
  42         local d
  43         local h
  44         local gcc_inc=$(LC_ALL=C ${CC} -print-search-dirs | grep '^install:' | cut -d ' ' -f 2)/include
  45
  46         local inc_path="${gcc_inc} ${gcc_inc}/c++ /usr/${CHOST}/include $(__host_prefix)/include"
  47
  48         for h
  49         do
  50                 case ${h} in
  51                         -I*)
  52                                 inc_path+=" ${h#-I}"
  53                                 continue
  54                 esac
  55
  56                 for d in ${inc_path}
  57                 do
  58                         if [ -e ${d}/${h} ]
  59                         then
  60                                 continue 2
  61                         fi
  62                 done
  63
  64                 return 1
  65         done
  66
  67         return 0
  68 }
  69
  70 #****f* Checks/check_lib
  71 #  SYNOPSIS
  72 #  inherit utils
  73 #  check_lib [-LDIRECTORY] [-LDIRECTORY2] ... LIBRARY [LIBRARY2] ...
  74 #  DESCRIPTION
  75 #  Checks for the presence of the given library(ies).  Directories can be added
  76 #  to the default library path by prefixing them with the -L flag.  Returns
  77 #  TRUE if all libraries are found, else FALSE.
  78 #****
  79 check_lib() {
  80         local d
  81         local l
  82         local shlibext
  83         local lib_path=$(LC_ALL=C ${CC} -print-search-dirs | grep '^libraries:' | sed -e 's|libraries: =||' -e 's|:| |g' | xargs -n1 readlink -e)
  84
  85         case ${CHOST} in
  86                 *-cygwin*|*-mingw*|*-msys*)
  87                                 shlibext=dll.a ;;
  88                 *-darwin*)      shlibext=dylib ;;
  89                 *-hpux*)        shlibext=sl ;;
  90                 *)              shlibext=so ;;
  91         esac
  92
  93         for l
  94         do
  95                 case ${l} in
  96                         -L*)
  97                                 lib_path+=" ${l#-L}"
  98                                 continue
  99                 esac
 100
 101                 for d in ${lib_path}
 102                 do
 103                         if [ -e ${d}/lib${l}.a -o -e ${d}/lib${l}.${shlibext} ]
 104                         then
 105                                 continue 2
 106                         fi
 107                 done
 108
 109                 return 1
 110         done
 111
 112         return 0
 113 }
 114
 115 readonly -f check_header check_lib