[FFmpeg-cvslog] configure: add --tempprefix option

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat Oct  5 13:48:22 2013 +0200| [4b05906e84051032eb8c6d92cc719ce9918ee547] | committer: Michael Niedermayer

configure: add --tempprefix option

With this and ccache configure execution time goes down from 3.9 to 2.4 seconds

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4b05906e84051032eb8c6d92cc719ce9918ee547
---

 configure |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 7b8cc81..ff6cfa9 100755
--- a/configure
+++ b/configure
@@ -260,6 +260,7 @@ Advanced options (experts only):
   --target-exec=CMD        command to run executables on target
   --target-path=DIR        path to view of build directory on target
   --target-samples=DIR     path to samples directory on target
+  --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
   --toolchain=NAME         set tool defaults according to NAME
   --nm=NM                  use nm tool NM [$nm_default]
   --ar=AR                  use archive tool AR [$ar_default]
@@ -1653,6 +1654,7 @@ CMDLINE_SET="
     target_os
     target_path
     target_samples
+    tempprefix
     toolchain
     valgrind
     yasmexe
@@ -2650,7 +2652,11 @@ HOSTEXESUF=$(exesuf $host_os)
 : ${TMPDIR:=$TMP}
 : ${TMPDIR:=/tmp}
 
-if ! check_cmd mktemp -u XXXXXX; then
+if [ -n "$tempprefix" ] ; then
+    mktemp(){
+        echo $tempprefix.${HOSTNAME}.${UID}
+    }
+elif ! check_cmd mktemp -u XXXXXX; then
     # simple replacement for missing mktemp
     # NOT SAFE FOR GENERAL USE
     mktemp(){