From 574873ca6ea2b8350f153751b0b2c298c053c06f Mon Sep 17 00:00:00 2001
From: Zachary T Welch <zwelch@codesourcery.com>
Date: Thu, 28 Oct 2010 16:25:49 -0700
Subject: [PATCH] Improve configure check reporting.
Adds numerous AC_MSG_CHECKING and AC_MSG_RESULT pairings for
configuration tests that were previously unreported. Relocates
the debug configuration to the same part of the file as the command
line option declaration for associative clarity. Makes it easier
to confirm the resultant configuration matches original intentions.
Signed-off-by: Zachary T Welch <zwelch@codesourcery.com>
---
configure.in | 53 +++++++++++++++++++++++++++++++++++++++++-----------
1 file changed, 42 insertions(+), 11 deletions(-)
diff --git a/configure.in b/configure.in
index d84817d6..729827aa 100644
--- a/configure.in
+++ b/configure.in
@@ -46,11 +46,6 @@ AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
CPPFLAGS="${CPPFLAGS} -D_GNU_SOURCE"
-if test x$enable_debug = xyes; then
- CPPFLAGS="${CPPFLAGS} -DDEBUG"
-else
- CPPFLAGS="${CPPFLAGS} -DNDEBUG"
-fi
AC_CHECK_MEMBERS([struct dl_phdr_info.dlpi_subs],,,[#include <link.h>])
AC_CHECK_TYPES([sighandler_t], [], [],
@@ -91,8 +86,14 @@ is_gcc_altivec() {
fi;
}
+AC_MSG_CHECKING([if building with AltiVec])
use_altivec=`is_gcc_altivec`
AM_CONDITIONAL(USE_ALTIVEC, test x$use_altivec = xhas_altivec)
+if test x$use_altivec = xhas_altivec; then
+ AC_MSG_RESULT([yes])
+else
+ AC_MSG_RESULT([no])
+fi
get_arch() {
case "$1" in
@@ -110,6 +111,15 @@ build_arch=`get_arch $build_cpu`
host_arch=`get_arch $host_cpu`
target_arch=`get_arch $target_cpu`
+AC_MSG_CHECKING([for build architecture])
+AC_MSG_RESULT([$build_arch])
+AC_MSG_CHECKING([for host architecture])
+AC_MSG_RESULT([$host_arch])
+AC_MSG_CHECKING([for target architecture])
+AC_MSG_RESULT([$target_arch])
+AC_MSG_CHECKING([for target operating system])
+AC_MSG_RESULT([$target_os])
+
AM_CONDITIONAL(REMOTE_ONLY, test x$target_arch != x$host_arch)
AM_CONDITIONAL(ARCH_ARM, test x$target_arch = xarm)
AM_CONDITIONAL(ARCH_IA64, test x$target_arch = xia64)
@@ -129,14 +139,27 @@ if test x$target_arch = xppc64; then
AC_SUBST([libdir])
fi
+AC_MSG_CHECKING([whether to restrict build to remote support])
if test x$target_arch != x$host_arch; then
CPPFLAGS="${CPPFLAGS} -DUNW_REMOTE_ONLY"
+ remote_only=yes
+else
+ remote_only=no
fi
+AC_MSG_RESULT([$remote_only])
+AC_MSG_CHECKING([whether to enable debug support])
AC_ARG_ENABLE(debug,
[ --enable-debug turn on debug support (slows down execution)],
-[enable_debug=yes], [])
+[enable_debug=yes], [enable_debug=no])
+if test x$enable_debug = xyes; then
+ CPPFLAGS="${CPPFLAGS} -DDEBUG"
+else
+ CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+fi
+AC_MSG_RESULT([$enable_debug])
+AC_MSG_CHECKING([whether to enable C++ exception support])
AC_ARG_ENABLE(cxx_exceptions,
[ --enable-cxx-exceptions use libunwind to handle C++ exceptions],
[enable_cxx_exceptions=$enableval],
@@ -150,50 +173,58 @@ case $target_arch in
esac
])
-if test x$enable_cxx_exceptions = xyes; then
- AC_MSG_NOTICE([Enabling C++ exception support])
-fi
AM_CONDITIONAL([SUPPORT_CXX_EXCEPTIONS], [test x$enable_cxx_exceptions = xyes])
+AC_MSG_RESULT([$enable_cxx_exceptions])
+AC_MSG_CHECKING([whether to load .debug_frame sections])
AC_ARG_ENABLE(debug_frame,
[ --enable-debug-frame Load the ".debug_frame" section if available],
[enable_debug_frame=$enableval], [enable_debug_frame=no])
if test x$enable_debug_frame = xyes; then
AC_DEFINE([CONFIG_DEBUG_FRAME], [], [Enable Debug Frame])
fi
+AC_MSG_RESULT([$enable_debug_frame])
+AC_MSG_CHECKING([whether to block signals during mutex ops])
AC_ARG_ENABLE(block_signals,
[ --enable-block-signals Block signals before performing mutex operations],
[enable_block_signals=$enableval], [enable_block_signals=yes])
if test x$enable_block_signals = xyes; then
AC_DEFINE([CONFIG_BLOCK_SIGNALS], [], [Block signals before mutex operations])
fi
+AC_MSG_RESULT([$enable_block_signals])
+AC_MSG_CHECKING([whether to validate memory addresses before use])
AC_ARG_ENABLE(conservative_checks,
[ --enable-conservative-checks Validate all memory addresses before use],
[enable_conservative_checks=$enableval], [enable_conservative_checks=yes])
if test x$enable_conservative_checks = xyes; then
CPPFLAGS="${CPPFLAGS} -DCONSERVATIVE_CHECKS"
fi
+AC_MSG_RESULT([$enable_conservative_checks])
LIBUNWIND___THREAD
+AC_MSG_CHECKING([if linker supports -static-libcxa])
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -static-libcxa"
-AC_TRY_LINK([], [], [have_static_libcxa=yes])
+AC_TRY_LINK([], [], [have_static_libcxa=yes], [have_static_libcxa=no])
LDFLAGS="$save_LDFLAGS"
if test "x$have_static_libcxa" = xyes; then
LDFLAGS_STATIC_LIBCXA="-XCClinker -static-libcxa"
fi
+AC_MSG_RESULT([$have_static_libcxa])
+AC_MSG_CHECKING([for Intel compiler])
AC_TRY_COMPILE([], [#ifndef __INTEL_COMPILER
#error choke me
-#endif], [intel_compiler=yes])
+#endif], [intel_compiler=yes], [intel_compiler=no])
if test x$GCC = xyes -a x$intel_compiler != xyes; then
CFLAGS="${CFLAGS} -fexceptions -Wall -Wsign-compare"
LIBCRTS="-lgcc"
fi
+AC_MSG_RESULT([$intel_compiler])
CCASFLAGS="${CCASFLAGS} ${CPPFLAGS}"