mirror of https://github.com/postgres/postgres
Unset CFLAGS before reading template. This should be more robust.
When --enable-debug is used, then the default CFLAGS for non-GCC is just -g without -O. Backpatch enhancement of Autoconf inline test that detects problems with the HP C compiler.
This commit is contained in:
Peter Eisentraut
parent
0543af2f12
commit
801427abc2
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@ -1,5 +1,5 @@
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# Macros to detect C compiler features
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# $Header: /cvsroot/pgsql/config/c-compiler.m4,v 1.9 2003/10/25 15:32:11 petere Exp $
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# $Header: /cvsroot/pgsql/config/c-compiler.m4,v 1.10 2003/11/01 20:48:51 petere Exp $
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# PGAC_C_SIGNED
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@ -149,3 +149,43 @@ CFLAGS=$pgac_save_CFLAGS
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if test "$ac_env_CFLAGS_set" != set; then
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CFLAGS="$CFLAGS $pgac_cv_prog_cc_no_strict_aliasing"
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fi])# PGAC_PROG_CC_NO_STRICT_ALIASING
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# The below backpatches the following Autoconf change:
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#
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# 2002-03-28 Kevin Ryde <user42@zip.com.au>
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#
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# * lib/autoconf/c.m4 (AC_C_INLINE): Test with a typedef return value,
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# to avoid versions of HP C which don't allow that.
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#
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# When we upgrade to Autoconf >= 2.53a then we can drop this and rely
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# on the standard macro.
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# AC_C_INLINE
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# -----------
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# Do nothing if the compiler accepts the inline keyword.
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# Otherwise define inline to __inline__ or __inline if one of those work,
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# otherwise define inline to be empty.
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AC_DEFUN([AC_C_INLINE],
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[AC_REQUIRE([AC_PROG_CC_STDC])dnl
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AC_CACHE_CHECK([for inline], ac_cv_c_inline,
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[ac_cv_c_inline=no
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for ac_kw in inline __inline__ __inline; do
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AC_COMPILE_IFELSE([AC_LANG_SOURCE(
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[#ifndef __cplusplus
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typedef int foo_t;
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static $ac_kw foo_t static_foo () {return 0; }
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$ac_kw int foo () {return 0; }
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#endif
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])],
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[ac_cv_c_inline=$ac_kw; break])
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done
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])
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case $ac_cv_c_inline in
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inline | yes) ;;
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no) AC_DEFINE(inline,,
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[Define as `__inline' if that's what the C compiler calls it,
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or to nothing if it is not supported.]) ;;
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*) AC_DEFINE_UNQUOTED(inline, $ac_cv_c_inline) ;;
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esac
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])# AC_C_INLINE
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@ -2384,7 +2384,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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pgac_CFLAGS_before_template=$CFLAGS
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unset CFLAGS
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#
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# Read the template
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@ -2399,12 +2399,15 @@ pgac_CFLAGS_before_template=$CFLAGS
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if test "$ac_env_CFLAGS_set" = set; then
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CFLAGS=$ac_env_CFLAGS_value
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elif test "$pgac_CFLAGS_before_template" != "$CFLAGS"; then
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elif test "${CFLAGS+set}" = set; then
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: # (keep what template set)
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elif test "$GCC" = yes; then
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CFLAGS="-O2"
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else
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CFLAGS="-O"
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# if the user selected debug mode, don't use -O
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if test "$enable_debug" != yes; then
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CFLAGS="-O"
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fi
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fi
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# Need to specify -fno-strict-aliasing too in case it's gcc 3.3 or later.
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@ -2473,7 +2476,7 @@ if test "$ac_env_CFLAGS_set" != set; then
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fi
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# supply -g if --enable-debug
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if test "$enable_debug" = yes -a "$ac_cv_prog_cc_g" = yes; then
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if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
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CFLAGS="$CFLAGS -g"
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fi
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@ -9314,7 +9317,8 @@ for ac_kw in inline __inline__ __inline; do
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#line $LINENO "configure"
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#include "confdefs.h"
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#ifndef __cplusplus
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static $ac_kw int static_foo () {return 0; }
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typedef int foo_t;
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static $ac_kw foo_t static_foo () {return 0; }
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$ac_kw int foo () {return 0; }
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#endif
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13
configure.in
13
configure.in
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@ -1,5 +1,5 @@
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dnl Process this file with autoconf to produce a configure script.
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dnl $Header: /cvsroot/pgsql/configure.in,v 1.299 2003/10/28 20:26:45 tgl Exp $
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dnl $Header: /cvsroot/pgsql/configure.in,v 1.300 2003/11/01 20:48:51 petere Exp $
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dnl
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dnl Developers, please strive to achieve this order:
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dnl
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@ -229,7 +229,7 @@ esac
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AC_PROG_CC([$pgac_cc_list])
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pgac_CFLAGS_before_template=$CFLAGS
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unset CFLAGS
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#
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# Read the template
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@ -244,19 +244,22 @@ pgac_CFLAGS_before_template=$CFLAGS
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if test "$ac_env_CFLAGS_set" = set; then
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CFLAGS=$ac_env_CFLAGS_value
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elif test "$pgac_CFLAGS_before_template" != "$CFLAGS"; then
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elif test "${CFLAGS+set}" = set; then
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: # (keep what template set)
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elif test "$GCC" = yes; then
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CFLAGS="-O2"
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else
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CFLAGS="-O"
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# if the user selected debug mode, don't use -O
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if test "$enable_debug" != yes; then
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CFLAGS="-O"
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fi
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fi
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# Need to specify -fno-strict-aliasing too in case it's gcc 3.3 or later.
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PGAC_PROG_CC_NO_STRICT_ALIASING
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# supply -g if --enable-debug
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if test "$enable_debug" = yes -a "$ac_cv_prog_cc_g" = yes; then
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if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
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CFLAGS="$CFLAGS -g"
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fi
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