configure

   1 #!/bin/bash
   2
   3 # We don't support srcdir != builddir
   4 echo \#buildapi-variable-no-builddir > /dev/null
   5
   6 prefix=/usr
   7
   8 enable_documentation=yes
   9
  10 CC="${CC:-cc}"
  11 PKG_CONFIG="${PKG_CONFIG:-pkg-config}"
  12
  13 # Little helper function for reading args from the commandline.
  14 # it automatically handles -a b and -a=b variants, and returns 1 if
  15 # we need to shift $3.
  16 read_arg() {
  17     # $1 = arg name
  18     # $2 = arg value
  19     # $3 = arg parameter
  20     local rematch='^[^=]*=(.*)$'
  21     if [[ $2 =~ $rematch ]]; then
  22         read -r "$1" <<< "${BASH_REMATCH[1]}"
  23     else
  24         read -r "$1" <<< "$3"
  25         # There is no way to shift our callers args, so
  26         # return 1 to indicate they should do it instead.
  27         return 1
  28     fi
  29     return 0
  30 }
  31
  32 while (($# > 0)); do
  33     case "${1%%=*}" in
  34         --prefix) read_arg prefix "$@" || shift ;;
  35         --libdir) read_arg libdir "$@" || shift ;;
  36         --datadir) read_arg datadir "$@" || shift ;;
  37         --sysconfdir) read_arg sysconfdir "$@" || shift ;;
  38         --sbindir) read_arg sbindir "$@" || shift ;;
  39         --mandir) read_arg mandir "$@" || shift ;;
  40         --disable-documentation) enable_documentation=no ;;
  41         --program-prefix) read_arg programprefix "$@" || shift ;;
  42         --exec-prefix) read_arg execprefix "$@" || shift ;;
  43         --bindir) read_arg bindir "$@" || shift ;;
  44         --includedir) read_arg includedir "$@" || shift ;;
  45         --libexecdir) read_arg libexecdir "$@" || shift ;;
  46         --localstatedir) read_arg localstatedir "$@" || shift ;;
  47         --sharedstatedir) read_arg sharedstatedir "$@" || shift ;;
  48         --infodir) read_arg infodir "$@" || shift ;;
  49         --systemdsystemunitdir) read_arg systemdsystemunitdir "$@" || shift ;;
  50         --bashcompletiondir) read_arg bashcompletiondir "$@" || shift ;;
  51         *) echo "Ignoring unknown option '$1'" ;;
  52     esac
  53     shift
  54 done
  55
  56 if ! ${PKG_CONFIG} --exists --print-errors " libkmod >= 23 "; then
  57     echo "dracut needs pkg-config and libkmod >= 23." >&2
  58     exit 1
  59 fi
  60
  61 cat << EOF > conftest.c
  62 #include <fts.h>
  63 int main() {
  64         return 0;
  65 }
  66 EOF
  67
  68 # shellcheck disable=SC2086
  69 ${CC} $CFLAGS $LDFLAGS conftest.c > /dev/null 2>&1
  70 ret=$?
  71 rm -f conftest.c a.out
  72
  73 # musl doesn't have fts.h included
  74 if test $ret -ne 0; then
  75     echo "dracut needs fts development files." >&2
  76     exit 1
  77 fi
  78
  79 cat << EOF > conftest.c
  80 #include <fts.h>
  81 int main(void) {
  82         fts_open(0, 0, 0);
  83         return 0;
  84 }
  85 EOF
  86
  87 found=no
  88 for lib in "-lc" "-lfts"; do
  89     # shellcheck disable=SC2086
  90     ${CC} $CFLAGS $LDFLAGS conftest.c -Wl,$lib > /dev/null 2>&1
  91     ret=$?
  92     if test $ret -eq 0; then
  93         FTS_LIBS="$lib"
  94         found=yes
  95         break
  96     fi
  97 done
  98 rm -f conftest.c a.out
  99
 100 if test $found = no; then
 101     echo "dracut couldn't find usable fts library" >&2
 102     exit 1
 103 fi
 104
 105 cat > Makefile.inc.$$ << EOF
 106 prefix ?= ${prefix}
 107 libdir ?= ${libdir:-${prefix}/lib}
 108 datadir ?= ${datadir:-${prefix}/share}
 109 sysconfdir ?= ${sysconfdir:-${prefix}/etc}
 110 sbindir ?= ${sbindir:-${prefix}/sbin}
 111 mandir ?= ${mandir:-${prefix}/share/man}
 112 enable_documentation ?= ${enable_documentation:-yes}
 113 bindir ?= ${bindir:-${prefix}/bin}
 114 KMOD_CFLAGS ?= $(${PKG_CONFIG} --cflags " libkmod >= 23 ")
 115 KMOD_LIBS ?= $(${PKG_CONFIG} --libs " libkmod >= 23 ")
 116 FTS_LIBS ?= ${FTS_LIBS}
 117 EOF
 118
 119 {
 120     [[ $programprefix ]] && echo "programprefix ?= ${programprefix}"
 121     [[ $execprefix ]] && echo "execprefix ?= ${execprefix}"
 122     [[ $includedir ]] && echo "includedir ?= ${includedir}"
 123     [[ $libexecdir ]] && echo "libexecdir ?= ${libexecdir}"
 124     [[ $localstatedir ]] && echo "localstatedir ?= ${localstatedir}"
 125     [[ $sharedstatedir ]] && echo "sharedstatedir ?= ${sharedstatedir}"
 126     [[ $infodir ]] && echo "infodir ?= ${infodir}"
 127     [[ $systemdsystemunitdir ]] && echo "systemdsystemunitdir ?= ${systemdsystemunitdir}"
 128     [[ $bashcompletiondir ]] && echo "bashcompletiondir ?= ${bashcompletiondir}"
 129 } >> Makefile.inc.$$
 130
 131 mv Makefile.inc.$$ Makefile.inc