Adjust configure to use "+Olibmerrno" with HP-UX C compiler, if possible.
This is reported to be necessary on some versions of that OS. In service of this, cause PGAC_PROG_CC_CFLAGS_OPT to reject switches that result in compiler warnings, since on yet other versions of that OS, the switch does nothing except provoke a warning. Report and patch by Ibrar Ahmed, further tweaking by me.
This commit is contained in:
Tom Lane
parent
7b158d1bae
commit
44404f3945
@ -130,9 +130,12 @@ AC_DEFUN([PGAC_PROG_CC_CFLAGS_OPT],
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AC_CACHE_CHECK([whether $CC supports $1], [Ac_cachevar],
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[pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS $1"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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_AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
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[Ac_cachevar=yes],
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[Ac_cachevar=no])
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"])
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if test x"$Ac_cachevar" = x"yes"; then
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CFLAGS="$CFLAGS $1"
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87
configure
vendored
87
configure
vendored
@ -4010,6 +4010,8 @@ if test "${pgac_cv_prog_cc_cflags__Wdeclaration_after_statement+set}" = set; the
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -Wdeclaration-after-statement"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4052,6 +4054,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__Wdeclaration_after_statement" >&5
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@ -4067,6 +4070,8 @@ if test "${pgac_cv_prog_cc_cflags__Wendif_labels+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -Wendif-labels"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4109,6 +4114,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__Wendif_labels" >&5
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@ -4125,6 +4131,8 @@ if test "${pgac_cv_prog_cc_cflags__Wformat_security+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -Wformat-security"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4167,6 +4175,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__Wformat_security" >&5
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@ -4183,6 +4192,8 @@ if test "${pgac_cv_prog_cc_cflags__fno_strict_aliasing+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -fno-strict-aliasing"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4225,6 +4236,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__fno_strict_aliasing" >&5
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@ -4241,6 +4253,8 @@ if test "${pgac_cv_prog_cc_cflags__fwrapv+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -fwrapv"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4283,6 +4297,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__fwrapv" >&5
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@ -4301,6 +4316,8 @@ if test "${pgac_cv_prog_cc_cflags__mp1+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -mp1"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4343,6 +4360,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__mp1" >&5
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@ -4359,6 +4377,8 @@ if test "${pgac_cv_prog_cc_cflags__fno_strict_aliasing+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -fno-strict-aliasing"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4401,6 +4421,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__fno_strict_aliasing" >&5
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@ -4418,6 +4439,8 @@ if test "${pgac_cv_prog_cc_cflags__qnoansialias+set}" = set; then
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS -qnoansialias"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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@ -4460,6 +4483,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__qnoansialias" >&5
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@ -4468,6 +4492,69 @@ if test x"$pgac_cv_prog_cc_cflags__qnoansialias" = x"yes"; then
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CFLAGS="$CFLAGS -qnoansialias"
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fi
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elif test "$PORTNAME" = "hpux"; then
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# On some versions of HP-UX, libm functions do not set errno by default.
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# Fix that by using +Olibmerrno if the compiler recognizes it.
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{ $as_echo "$as_me:$LINENO: checking whether $CC supports +Olibmerrno" >&5
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$as_echo_n "checking whether $CC supports +Olibmerrno... " >&6; }
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if test "${pgac_cv_prog_cc_cflags_pOlibmerrno+set}" = set; then
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$as_echo_n "(cached) " >&6
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else
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pgac_save_CFLAGS=$CFLAGS
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CFLAGS="$pgac_save_CFLAGS +Olibmerrno"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (ac_try="$ac_compile"
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case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
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$as_echo "$ac_try_echo") >&5
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(eval "$ac_compile") 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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$as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } && {
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test -z "$ac_c_werror_flag" ||
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test ! -s conftest.err
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} && test -s conftest.$ac_objext; then
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pgac_cv_prog_cc_cflags_pOlibmerrno=yes
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else
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$as_echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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pgac_cv_prog_cc_cflags_pOlibmerrno=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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fi
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{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags_pOlibmerrno" >&5
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$as_echo "$pgac_cv_prog_cc_cflags_pOlibmerrno" >&6; }
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if test x"$pgac_cv_prog_cc_cflags_pOlibmerrno" = x"yes"; then
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CFLAGS="$CFLAGS +Olibmerrno"
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fi
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fi
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# supply -g if --enable-debug
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@ -445,6 +445,10 @@ elif test "$ICC" = yes; then
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elif test "$PORTNAME" = "aix"; then
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# AIX's xlc has to have strict aliasing turned off too
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PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
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elif test "$PORTNAME" = "hpux"; then
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# On some versions of HP-UX, libm functions do not set errno by default.
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# Fix that by using +Olibmerrno if the compiler recognizes it.
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PGAC_PROG_CC_CFLAGS_OPT([+Olibmerrno])
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fi
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# supply -g if --enable-debug
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