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configure: add AC_LANG_SOURCE call within AC_COMPILE_IFELSE

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Documentation states that AC_*_IFELSE has to use AC_LANG_SOURCE or
friends in order to generate the source code to compile.
AC_LINK_IFELSE already handles this, thus convert AC_COMPILE_IFELSE
to silence the final autoconf warnings.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
This commit is contained in:
Emil Velikov 2013-09-19 17:21:01 +01:00 • committed by Eric Anholt
parent 0f4452bb51
commit bf4a7cd4b2
1 changed files with 1 additions and 1 deletions
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2
configure.ac
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@ -111,7 +111,7 @@ AC_DEFUN([LIBDRM_CC_TRY_FLAG], [
libdrm_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1"
AC_COMPILE_IFELSE([ ], [libdrm_cc_flag=yes], [libdrm_cc_flag=no])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([ ])], [libdrm_cc_flag=yes], [libdrm_cc_flag=no])
CFLAGS="$libdrm_save_CFLAGS"
if test "x$libdrm_cc_flag" = "xyes"; then