From 4e30e68cafdd558463be2352849e707bcc36aa3c Mon Sep 17 00:00:00 2001 From: Ned Bass Date: Mon, 15 Dec 2014 13:53:00 -0800 Subject: [PATCH] Don't use AC_LANG_SOURCE for conftest.h source Using AC_LANG_SOURCE with some versions of autoconf is problematic if the given source is to be written to a header file. Such versions assume the contents are to be written to conftest.c and generate shell code to that effect. The contents of the test program to detect support for Linux tracepoints were consequently malformed (containing the source for conftest.h) so the build system incorrectly disabled tracepoints support. Fix this in ZFS_LINUX_TRY_COMPILE_HEADER by passing the header source directly to ZFS_LINUX_COMPILE_IFELSE. Signed-off-by: Ned Bass Signed-off-by: Brian Behlendorf Issue #2953 --- config/kernel.m4 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/config/kernel.m4 b/config/kernel.m4 index d8784c9db9..bdfb19c83b 100644 --- a/config/kernel.m4 +++ b/config/kernel.m4 @@ -649,5 +649,5 @@ AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [AC_LANG_SOURCE([ZFS_LANG_PROGRAM([[$1]], [[$2]])])], [modules], [test -s build/conftest.o], - [$3], [$4], [AC_LANG_SOURCE([$5])]) + [$3], [$4], [$5]) ])