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Back-port HEAD's configure fixes to select appropriate compiler switches
for Intel's icc and AIX's xlc.
This commit is contained in:
Tom Lane
201
configure
vendored
201
configure
vendored
@@ -2432,12 +2432,58 @@ else
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fi
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fi
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if test "$GCC" = yes; then
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CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wpointer-arith"
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# Some versions of GCC support some additional useful warning flags.
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# Check whether they are supported, and add them to CFLAGS if so.
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# Some versions of GCC support some additional useful warning flags.
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# Check whether they are supported, and add them to CFLAGS if so.
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echo "$as_me:$LINENO: checking if $CC supports -Wdeclaration-after-statement" >&5
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if test "$GCC" = yes; then
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# ICC pretends to be GCC but it's lying; it doesn't support these options.
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# So we have to check if "GCC" is really ICC.
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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#include "confdefs.h"
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#ifdef F77_DUMMY_MAIN
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# ifdef __cplusplus
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extern "C"
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# endif
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int F77_DUMMY_MAIN() { return 1; }
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#endif
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int
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main ()
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{
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#ifndef __INTEL_COMPILER
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choke me
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#endif
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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ICC=yes
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else
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echo "$as_me: failed program was:" >&5
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cat conftest.$ac_ext >&5
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ICC=no
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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if test "$ICC" = no; then
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CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wpointer-arith"
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echo "$as_me:$LINENO: checking if $CC supports -Wdeclaration-after-statement" >&5
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echo $ECHO_N "checking if $CC supports -Wdeclaration-after-statement... $ECHO_C" >&6
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -Wdeclaration-after-statement"
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@@ -2482,52 +2528,7 @@ echo "${ECHO_T}no" >&6
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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echo "$as_me:$LINENO: checking if $CC supports -Wold-style-definition" >&5
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echo $ECHO_N "checking if $CC supports -Wold-style-definition... $ECHO_C" >&6
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -Wold-style-definition"
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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#include "confdefs.h"
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#ifdef F77_DUMMY_MAIN
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# ifdef __cplusplus
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extern "C"
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# endif
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int F77_DUMMY_MAIN() { return 1; }
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#endif
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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else
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echo "$as_me: failed program was:" >&5
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cat conftest.$ac_ext >&5
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CFLAGS="$pgac_save_CFLAGS"
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echo "$as_me:$LINENO: result: no" >&5
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echo "${ECHO_T}no" >&6
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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echo "$as_me:$LINENO: checking if $CC supports -Wendif-labels" >&5
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echo "$as_me:$LINENO: checking if $CC supports -Wendif-labels" >&5
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echo $ECHO_N "checking if $CC supports -Wendif-labels... $ECHO_C" >&6
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -Wendif-labels"
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@@ -2572,6 +2573,56 @@ echo "${ECHO_T}no" >&6
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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else
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# Intel compiler has a bug/misoptimization in checking for
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# division by NAN (NaN == 0), -mp1 fixes it, so add it to the
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# CFLAGS.
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echo "$as_me:$LINENO: checking if $CC supports -mp1" >&5
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echo $ECHO_N "checking if $CC supports -mp1... $ECHO_C" >&6
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -mp1"
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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#include "confdefs.h"
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#ifdef F77_DUMMY_MAIN
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# ifdef __cplusplus
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extern "C"
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# endif
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int F77_DUMMY_MAIN() { return 1; }
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#endif
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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else
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echo "$as_me: failed program was:" >&5
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cat conftest.$ac_ext >&5
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CFLAGS="$pgac_save_CFLAGS"
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echo "$as_me:$LINENO: result: no" >&5
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echo "${ECHO_T}no" >&6
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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fi
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# Disable strict-aliasing rules; needed for gcc 3.3+
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echo "$as_me:$LINENO: checking if $CC supports -fno-strict-aliasing" >&5
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@@ -2619,6 +2670,53 @@ echo "${ECHO_T}no" >&6
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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elif test x"${CC}" = x"xlc"; then
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# AIX xlc has to have strict aliasing turned off too
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echo "$as_me:$LINENO: checking if $CC supports -qnoansialias" >&5
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echo $ECHO_N "checking if $CC supports -qnoansialias... $ECHO_C" >&6
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -qnoansialias"
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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#include "confdefs.h"
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#ifdef F77_DUMMY_MAIN
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# ifdef __cplusplus
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extern "C"
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# endif
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int F77_DUMMY_MAIN() { return 1; }
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#endif
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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else
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echo "$as_me: failed program was:" >&5
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cat conftest.$ac_ext >&5
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CFLAGS="$pgac_save_CFLAGS"
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echo "$as_me:$LINENO: result: no" >&5
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echo "${ECHO_T}no" >&6
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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fi
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# supply -g if --enable-debug
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@@ -2637,7 +2735,6 @@ fi
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# Check if the compiler still works with the template settings
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echo "$as_me:$LINENO: checking whether the C compiler still works" >&5
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echo $ECHO_N "checking whether the C compiler still works... $ECHO_C" >&6
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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#include "confdefs.h"
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