fix(zfcp_rules): correct shellcheck regression when parsing ccw args

[thirdparty/dracut.git] / configure

diff --git a/configure b/configure
index 86323984b8fce1b5a2e6a4abc9979c5a730556f5..8d1971b79aef09b0205cef9a5cf16789df5d5652 100755 (executable)
--- a/configure
+++ b/configure
@@ -1,12 +1,16 @@
 #!/bin/bash
-# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
-# ex: ts=8 sw=4 sts=4 et filetype=sh
 
 # We don't support srcdir != builddir
-echo \#buildapi-variable-no-builddir >/dev/null
+echo \#buildapi-variable-no-builddir > /dev/null
 
 prefix=/usr
 
+enable_documentation=yes
+enable_dracut_cpio=no
+
+CC="${CC:-cc}"
+PKG_CONFIG="${PKG_CONFIG:-pkg-config}"
+
 # Little helper function for reading args from the commandline.
 # it automatically handles -a b and -a=b variants, and returns 1 if
 # we need to shift $3.
@@ -16,34 +20,155 @@ read_arg() {
     # $3 = arg parameter
     local rematch='^[^=]*=(.*)$'
     if [[ $2 =~ $rematch ]]; then
-        read "$1" <<< "${BASH_REMATCH[1]}"
+        read -r "$1" <<< "${BASH_REMATCH[1]}"
     else
-        read "$1" <<< "$3"
+        read -r "$1" <<< "$3"
         # There is no way to shift our callers args, so
         # return 1 to indicate they should do it instead.
         return 1
     fi
+    return 0
 }
 
 while (($# > 0)); do
     case "${1%%=*}" in
-        --prefix) read_arg prefix "$@" || shift;;
-        --libdir) read_arg libdir "$@" || shift;;
-        --datadir) read_arg datadir "$@" || shift;;
-        --sysconfdir) read_arg sysconfdir "$@" || shift;;
-        --sbindir) read_arg sbindir "$@" || shift;;
-        --mandir) read_arg mandir "$@" || shift;;
-        *) echo "Ignoring unknown option '$1'";;
+        --prefix) read_arg prefix "$@" || shift ;;
+        --libdir) read_arg libdir "$@" || shift ;;
+        --datadir) read_arg datadir "$@" || shift ;;
+        --sysconfdir) read_arg sysconfdir "$@" || shift ;;
+        --sbindir) read_arg sbindir "$@" || shift ;;
+        --mandir) read_arg mandir "$@" || shift ;;
+        --disable-documentation) enable_documentation=no ;;
+        --program-prefix) read_arg programprefix "$@" || shift ;;
+        --exec-prefix) read_arg execprefix "$@" || shift ;;
+        --bindir) read_arg bindir "$@" || shift ;;
+        --includedir) read_arg includedir "$@" || shift ;;
+        --libexecdir) read_arg libexecdir "$@" || shift ;;
+        --localstatedir) read_arg localstatedir "$@" || shift ;;
+        --sharedstatedir) read_arg sharedstatedir "$@" || shift ;;
+        --infodir) read_arg infodir "$@" || shift ;;
+        --systemdsystemunitdir) read_arg systemdsystemunitdir "$@" || shift ;;
+        --bashcompletiondir) read_arg bashcompletiondir "$@" || shift ;;
+        --enable-dracut-cpio) enable_dracut_cpio=yes ;;
+        *) echo "Ignoring unknown option '$1'" ;;
     esac
     shift
 done
 
-cat > Makefile.inc.tmp <<EOF
+if ! ${PKG_CONFIG} --exists --print-errors " libkmod >= 23 "; then
+    echo "dracut needs pkg-config and libkmod >= 23." >&2
+    exit 1
+fi
+
+if ! command -v "${CC}" > /dev/null; then
+    echo "dracut needs a C compiler (${CC} not found)." >&2
+    exit 1
+fi
+
+cat << EOF > conftest.c
+#include <fts.h>
+int main() {
+       return 0;
+}
+EOF
+
+# shellcheck disable=SC2086
+${CC} $CFLAGS $LDFLAGS conftest.c > /dev/null 2>&1
+ret=$?
+rm -f conftest.c a.out
+
+# musl doesn't have fts.h included
+if test $ret -ne 0; then
+    echo "dracut needs fts development files." >&2
+    exit 1
+fi
+
+cat << EOF > conftest.c
+#include <fts.h>
+int main(void) {
+       fts_open(0, 0, 0);
+       return 0;
+}
+EOF
+
+found=no
+for lib in "-lc" "-lfts"; do
+    # shellcheck disable=SC2086
+    ${CC} $CFLAGS $LDFLAGS conftest.c -Wl,$lib > /dev/null 2>&1
+    ret=$?
+    if test $ret -eq 0; then
+        FTS_LIBS="$lib"
+        found=yes
+        break
+    fi
+done
+rm -f conftest.c a.out
+
+if test $found = no; then
+    echo "dracut couldn't find usable fts library" >&2
+    exit 1
+fi
+
+cat << EOF > conftest.c
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#ifndef SYS_gettid
+#error "SYS_gettid unavailable on this system"
+#endif
+
+#define gettid()    ((pid_t) syscall(SYS_gettid))
+
+int main(void) {
+  return getpid() == gettid() ? 0 : -1;
+}
+EOF
+
+# shellcheck disable=SC2086
+${CC} $CFLAGS $LDFLAGS conftest.c > /dev/null 2>&1
+ret=$?
+rm -f conftest.c a.out
+
+if test $ret -ne 0; then
+    echo "dracut needs SYS_gettid support." >&2
+    exit 1
+fi
+
+if test "$enable_dracut_cpio" = "yes"; then
+    cargo --version > /dev/null
+    ret=$?
+    if test $ret -ne 0; then
+        echo "dracut couldn't find cargo for dracut-cpio build"
+        exit 1
+    fi
+fi
+
+cat > Makefile.inc.$$ << EOF
 prefix ?= ${prefix}
 libdir ?= ${libdir:-${prefix}/lib}
 datadir ?= ${datadir:-${prefix}/share}
 sysconfdir ?= ${sysconfdir:-${prefix}/etc}
 sbindir ?= ${sbindir:-${prefix}/sbin}
 mandir ?= ${mandir:-${prefix}/share/man}
+enable_documentation ?= ${enable_documentation:-yes}
+enable_dracut_cpio ?= ${enable_dracut_cpio}
+bindir ?= ${bindir:-${prefix}/bin}
+KMOD_CFLAGS ?= $(${PKG_CONFIG} --cflags " libkmod >= 23 ")
+KMOD_LIBS ?= $(${PKG_CONFIG} --libs " libkmod >= 23 ")
+FTS_LIBS ?= ${FTS_LIBS}
 EOF
-mv Makefile.inc.tmp Makefile.inc
+
+{
+    [[ $programprefix ]] && echo "programprefix ?= ${programprefix}"
+    [[ $execprefix ]] && echo "execprefix ?= ${execprefix}"
+    [[ $includedir ]] && echo "includedir ?= ${includedir}"
+    [[ $libexecdir ]] && echo "libexecdir ?= ${libexecdir}"
+    [[ $localstatedir ]] && echo "localstatedir ?= ${localstatedir}"
+    [[ $sharedstatedir ]] && echo "sharedstatedir ?= ${sharedstatedir}"
+    [[ $infodir ]] && echo "infodir ?= ${infodir}"
+    [[ $systemdsystemunitdir ]] && echo "systemdsystemunitdir ?= ${systemdsystemunitdir}"
+    [[ $bashcompletiondir ]] && echo "bashcompletiondir ?= ${bashcompletiondir}"
+} >> Makefile.inc.$$
+
+mv Makefile.inc.$$ Makefile.inc