Add fallback if mktemp utility cannot be found.

diff --git a/m4/as-linux.m4 b/m4/as-linux.m4
index 8229baaaa5d329b1e951839492965d2bbf3926bd..854260629a86e699f1b3103e2f721d1a78d8da50 100644 (file)
--- a/m4/as-linux.m4
+++ b/m4/as-linux.m4
@@ -286,10 +286,20 @@ AC_DEFUN([AS_LINUX_2_6],
 [
        AC_MSG_CHECKING(for Linux CFLAGS)
 
-       tmpdir="`pwd`/tmp-noicrwa"
-
-       rm -rf ${tmpdir} || :
-       mkdir ${tmpdir}
+       {
+         tmpdir=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+         test -n "$tmpdir" && test -d "$tmpdir"
+       } ||
+       {
+         tmpdir=./confstat$$-$RANDOM
+         (umask 077 && mkdir $tmpdir)
+       } ||
+       {
+         echo "$me: cannot create a temporary directory in ." >&2
+         { (exit 1); exit 1; }
+       }
+
+       tmpdir=`pwd`/$tmpdir
 
        cat >${tmpdir}/Makefile <<EOF
 obj-m += fake.o
@@ -350,13 +360,23 @@ AC_DEFUN([AS_LINUX_2_4],
 You need to run 'make dep' on the kernel source before continuing.])
        fi
 
-        TMPFILE=`mktemp /tmp/linux.XXXXXXXX` || exit 1
-
-       POPDIR=`(pwd)`
-        cd ${LINUX_DIR}
-( sed "s|\.config|${CONFIG_FILE}|g" Makefile && cat <<EOF ) | make -f - get_cflags > ${TMPFILE}
-
-get_cflags:
+       {
+         tmpdir=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+         test -n "$tmpdir" && test -d "$tmpdir"
+       } ||
+       {
+         tmpdir=./confstat$$-$RANDOM
+         (umask 077 && mkdir $tmpdir)
+       } ||
+       {
+         echo "$me: cannot create a temporary directory in ." >&2
+         { (exit 1); exit 1; }
+       }
+       tmpdir=`pwd`/$tmpdir
+
+       #sed "s|\.config|${CONFIG_FILE}|g" ${LINUX_DIR}/Makefile >$tmpdir/Makefile
+       cat >$tmpdir/Makefile <<EOF
+modules:
        @echo LINUX_ARCH=\"\$(ARCH)\"
        @echo LINUX_AFLAGS=\"\$(AFLAGS)\" | sed 's_Iinclude_I\"\$(LINUXDIR)/include\"_g'
        @echo LINUX_LDFLAGS=\"\"
@@ -369,9 +389,9 @@ get_cflags:
        @echo LINUX_LD=\"\$(LD) \$(LDFLAGS)\"
        @echo LINUX_AS=\"\$(AS)\"
 EOF
-       . ${TMPFILE}
-       rm -rf ${TMPFILE}
-       cd $POPDIR
+       make -C ${LINUX_DIR} SUBDIRS=${tmpdir} modules | grep ^LINUX_ >${tmpdir}/ack
+       . ${tmpdir}/ack
+       rm -rf ${tmpdir}
 
        LINUX_MODULE_EXT=".o"