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From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Fri, 24 Apr 2009 18:35:19 +0200
Subject: [PATCH] use AC_COMPILE_IFELSE rather than AC_TRY_RUN
AC_TRY_RUN relys on executing the test, not working while cross
compiling. Thus a hard wired value for the cross compilation must and is
used.
Switching to AC_COMPILE_IFELSE just tries to compile the test program
which has the save effect and works even in the cross compiling
scenario.
This patch uses AC_COMPILE_IFELSE for these tests:
"--enable-profiling, enable C-level code profiling"
"whether $CC accepts -fno-strict-aliasing"
"whether $CC accepts -OPT:Olimit=0"
"whether $CC accepts -Olimit 1500"
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
configure.in | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/configure.in b/configure.in
index 87fad98..8d130b4 100644
--- a/configure.in
+++ b/configure.in
@@ -697,9 +697,8 @@ AC_ARG_ENABLE(profiling,
AC_HELP_STRING(--enable-profiling, enable C-level code profiling),
[ac_save_cc="$CC"
CC="$CC -pg"
- AC_TRY_RUN([int main() { return 0; }],
+ AC_COMPILE_IFELSE([int main() { return 0; }],
ac_enable_profiling="yes",
- ac_enable_profiling="no",
ac_enable_profiling="no")
CC="$ac_save_cc"])
AC_MSG_RESULT($ac_enable_profiling)
@@ -922,9 +921,8 @@ yes)
AC_MSG_CHECKING(whether $CC accepts -fno-strict-aliasing)
ac_save_cc="$CC"
CC="$CC -fno-strict-aliasing"
- AC_TRY_RUN([int main() { return 0; }],
+ AC_COMPILE_IFELSE([int main() { return 0; }],
ac_cv_no_strict_aliasing_ok=yes,
- ac_cv_no_strict_aliasing_ok=no,
ac_cv_no_strict_aliasing_ok=no)
CC="$ac_save_cc"
AC_MSG_RESULT($ac_cv_no_strict_aliasing_ok)
@@ -1093,9 +1091,8 @@ AC_MSG_CHECKING(whether $CC accepts -OPT:Olimit=0)
AC_CACHE_VAL(ac_cv_opt_olimit_ok,
[ac_save_cc="$CC"
CC="$CC -OPT:Olimit=0"
-AC_TRY_RUN([int main() { return 0; }],
+AC_COMPILE_IFELSE([int main() { return 0; }],
ac_cv_opt_olimit_ok=yes,
- ac_cv_opt_olimit_ok=no,
ac_cv_opt_olimit_ok=no)
CC="$ac_save_cc"])
AC_MSG_RESULT($ac_cv_opt_olimit_ok)
@@ -1115,9 +1112,8 @@ else
AC_CACHE_VAL(ac_cv_olimit_ok,
[ac_save_cc="$CC"
CC="$CC -Olimit 1500"
- AC_TRY_RUN([int main() { return 0; }],
+ AC_COMPILE_IFELSE([int main() { return 0; }],
ac_cv_olimit_ok=yes,
- ac_cv_olimit_ok=no,
ac_cv_olimit_ok=no)
CC="$ac_save_cc"])
AC_MSG_RESULT($ac_cv_olimit_ok)
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