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gcc/libstdc++-v3/acinclude.m4
Benjamin Kosnik cde28f0da4 Makefile.am (AC_CXXFLAGS): Add CPUFLAGS here. 
2000-05-01  Benjamin Kosnik  <bkoz@haight.constant.com>

	* src/Makefile.am (AC_CXXFLAGS): Add CPUFLAGS here.
	* src/Makefile.in: Regenerate.
	* acinclude.m4 (GLIBCPP_ENABLE_DEBUG): Revert.

From-SVN: r33593
2000-05-01 23:47:31 +00:00

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dnl
dnl Initialize configure bits.
dnl
dnl Define OPTLEVEL='-O2' if new inlining code present.
dnl
dnl GLIBCPP_CONFIGURE
AC_DEFUN(GLIBCPP_CONFIGURE, [
dnl Default to --enable-multilib
AC_ARG_ENABLE(multilib,
[ --enable-multilib build hella library versions (default)],
[case "${enableval}" in
yes) multilib=yes ;;
no) multilib=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
esac], [multilib=yes])dnl
dnl We may get other options which we dont document:
dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
if test "[$]{srcdir}" = "."; then
if test "[$]{with_target_subdir}" != "."; then
glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
else
glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
fi
else
glibcpp_basedir="[$]{srcdir}/$1"
fi
AC_SUBST(glibcpp_basedir)
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE(libstdc++, 2.90.8)
# FIXME: We temporarily define our own version of AC_PROG_CC. This is
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
# are probably using a cross compiler, which will not be able to fully
# link an executable. This should really be fixed in autoconf
# itself.
AC_DEFUN(LIB_AC_PROG_CC,
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
dnl Fool anybody using AC_PROG_CC.
AC_PROVIDE([AC_PROG_CC])
AC_CHECK_PROG(CC, gcc, gcc)
if test -z "$CC"; then
AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
fi
AC_PROG_CC_GNU
if test $ac_cv_prog_gcc = yes; then
GCC=yes
dnl Check whether -g works, even if CFLAGS is set, in case the package
dnl plays around with CFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
ac_test_CFLAGS="${CFLAGS+set}"
ac_save_CFLAGS="$CFLAGS"
CFLAGS=
AC_PROG_CC_G
if test "$ac_test_CFLAGS" = set; then
CFLAGS="$ac_save_CFLAGS"
elif test $ac_cv_prog_cc_g = yes; then
CFLAGS="-g -O2"
else
CFLAGS="-O2"
fi
else
GCC=
test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
])
LIB_AC_PROG_CC
# Likewise for AC_PROG_CXX.
AC_DEFUN(LIB_AC_PROG_CXX,
[AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
dnl Fool anybody using AC_PROG_CXX.
AC_PROVIDE([AC_PROG_CXX])
AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
AC_PROG_CXX_GNU
if test $ac_cv_prog_gxx = yes; then
GXX=yes
dnl Check whether -g works, even if CXXFLAGS is set, in case the package
dnl plays around with CXXFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
ac_test_CXXFLAGS="${CXXFLAGS+set}"
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS=
AC_PROG_CXX_G
if test "$ac_test_CXXFLAGS" = set; then
CXXFLAGS="$ac_save_CXXFLAGS"
elif test $ac_cv_prog_cxx_g = yes; then
CXXFLAGS="-g -O2"
else
CXXFLAGS="-O2"
fi
else
GXX=
test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
fi
])
LIB_AC_PROG_CXX
# AC_CHECK_TOOL does AC_REQUIRE (AC_CANONICAL_BUILD). If we dont
# run it explicitly here, it will be run implicitly before
# LIBGCJ_CONFIGURE, which doesn't work because that means that it will
# be run before AC_CANONICAL_HOST.
AC_CANONICAL_BUILD
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_PROG_INSTALL
AM_MAINTAINER_MODE
# We need AC_EXEEXT to keep automake happy in cygnus mode. However,
# at least currently, we never actually build a program, so we never
# need to use $(EXEEXT). Moreover, the test for EXEEXT normally
# fails, because we are probably configuring with a cross compiler
# which cant create executables. So we include AC_EXEEXT to keep
# automake happy, but we dont execute it, since we dont care about
# the result.
if false; then
AC_EXEEXT
fi
# configure.host sets the following important variables
# glibcpp_cflags - host specific C compiler flags
# glibcpp_cxxflags - host specific C++ compiler flags
glibcpp_cflags=
glibcpp_cxxflags=
. [$]{glibcpp_basedir}/configure.host
case [$]{glibcpp_basedir} in
/* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
*) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
esac
GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
AC_SUBST(GLIBCPP_CFLAGS)
AC_SUBST(GLIBCPP_CXXFLAGS)
])
dnl
dnl Check to see if g++ can compile this library.
dnl
dnl Define OPTLEVEL='-O2' if new inlining code present.
dnl
dnl GLIBCPP_CHECK_COMPILER_VERSION
AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
AC_MSG_CHECKING([for g++ that will successfullly compile this code])
AC_EGREP_CPP([ok], [
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
ok
#endif
], gpp_satisfactory=yes, AC_MSG_ERROR("please upgrade to gcc-2.95 or above"))
AC_MSG_RESULT($gpp_satisfactory)
AC_MSG_CHECKING([for g++ that supports new inlining mechanism])
AC_EGREP_CPP([ok], [
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 95)
ok
#endif
], [OPTLEVEL='-O2'
WERRORSUPPRESS=
], [OPTLEVEL=
WERRORSUPPRESS=-Wno-error
])
if test "$OPTLEVEL" = ""; then
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes)
fi
AC_SUBST(OPTLEVEL)
AC_SUBST(WERRORSUPPRESS)
])
dnl
dnl Check to see what builtin math functions are supported
dnl
dnl Define _GLIBCPP_HAS_BUILTIN_SINF if __builtin_sinf
dnl Define _GLIBCPP_HAS_BUILTIN_COSF if __builtin_cosf
dnl Define _GLIBCPP_HAS_BUILTIN_FABSF if __builtin_fabsf
dnl Define _GLIBCPP_HAS_BUILTIN_SQRTF if __builtin_sqrtf
dnl
dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
dnl Test for builtin math functions.
AC_MSG_CHECKING([for __builtin_sinf])
AC_TRY_COMPILE([#include <math.h>],
[float foo(void) { __builtin_sinf(0.0); }],
use_builtin_sinf=yes, use_builtin_sinf=no)
AC_MSG_RESULT($use_builtin_sinf)
if test $use_builtin_sinf = "yes"; then
AC_DEFINE(_GLIBCPP_HAS_BUILTIN_SINF)
fi
AC_MSG_CHECKING([for __builtin_cosf])
AC_TRY_COMPILE([#include <math.h>],
[float foo(void) { __builtin_cosf(0.0); }],
use_builtin_cosf=yes, use_builtin_cosf=no)
AC_MSG_RESULT($use_builtin_cosf)
if test $use_builtin_cosf = "yes"; then
AC_DEFINE(_GLIBCPP_HAS_BUILTIN_COSF)
fi
AC_MSG_CHECKING([for __builtin_fabsf])
AC_TRY_COMPILE([#include <math.h>],
[float foo(void) { __builtin_fabsf(0.0); }],
use_builtin_fabsf=yes, use_builtin_fabsf=no)
AC_MSG_RESULT($use_builtin_fabsf)
if test $use_builtin_fabsf = "yes"; then
AC_DEFINE(_GLIBCPP_HAS_BUILTIN_FABSF)
fi
AC_MSG_CHECKING([for __builtin_sqrtf])
AC_TRY_COMPILE([#include <math.h>],
[float foo(void) { __builtin_sqrtf(0.0); }],
use_builtin_sqrtf=yes, use_builtin_sqrtf=no)
AC_MSG_RESULT($use_builtin_sqrtf)
if test $use_builtin_sqrtf = "yes"; then
AC_DEFINE(_GLIBCPP_HAS_BUILTIN_SQRTF)
fi
])
dnl
dnl Check to see what architecture we are compiling for. If it's
dnl supported, use special hand-crafted routines to provide thread
dnl primitives. Also, if architecture-specific flags are required for
dnl compilation, add them here.
dnl
dnl Depending on what is found, select configure/cpu/*/bits/atomicity.h
dnl If not found, select configure/cpu/generic/bits/atomicity.h
dnl
dnl GLIBCPP_CHECK_CPU
AC_DEFUN(GLIBCPP_CHECK_CPU, [
AC_MSG_CHECKING([for cpu primitives directory])
CPUFLAGS=
case "$target_cpu" in
alpha*)
cpu_include_dir="config/cpu/alpha"
;;
arm*)
cpu_include_dir="config/cpu/arm"
;;
i486 | i586 | i686 | i786)
cpu_include_dir="config/cpu/i386"
;;
powerpc | rs6000)
cpu_include_dir="config/cpu/powerpc"
CPUFLAGS='-mnew-mnemonics -Wa,-mppc -mpowerpc'
;;
sparc64 | ultrasparc)
cpu_include_dir="config/cpu/sparc/sparc64"
;;
sparc*)
cpu_include_dir="config/cpu/sparc/sparc32"
;;
*)
cpu_include_dir="config/cpu/generic"
;;
esac
AC_MSG_RESULT($cpu_include_dir)
AC_SUBST(cpu_include_dir)
AC_SUBST(CPUFLAGS)
])
dnl
dnl Check to see what the underlying c library's interface to ctype looks
dnl like. Bits of locale rely on things like isspace, toupper, etc. This
dnl stuff makes sure the right bits from the clibrary get called.
dnl
dnl Depending on what is found, select various configure/*/bits/ctype_base.h
dnl Depending on what is found, select various configure/*/ctype.cc
dnl
dnl GLIBCPP_CHECK_CTYPE
AC_DEFUN(GLIBCPP_CHECK_CTYPE, [
AC_CHECK_HEADER(ctype.h, [
dnl If doesn't match any specified, go with defaults.
ctype_default=yes
dnl Test for <ctype> functionality -- gnu-linux
AC_MSG_CHECKING([for gnu-linux <ctype>])
AC_TRY_COMPILE([#include <ctype.h>],
[int
foo (int a)
{ return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
+ _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
+ __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
ctype_linux=yes, ctype_linux=no)
AC_MSG_RESULT($ctype_linux)
if test $ctype_linux = "yes"; then
ctype_include_dir="config/gnu-linux"
ctype_default=no
fi
dnl Test for <ctype> functionality -- solaris 2.6 and 2.7
if test $ctype_default = "yes"; then
AC_MSG_CHECKING([for solaris 2.6 or 2.7 <ctype>])
AC_TRY_COMPILE([#include <ctype.h>],
[int
foo (int a)
{ return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
+ _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
+ __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
ctype_solaris=yes, ctype_solaris=no)
AC_MSG_RESULT($ctype_solaris)
if test $ctype_solaris = "yes"; then
AC_MSG_CHECKING([ for version])
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <ctype.h>],
[typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
ctype_solaris26=yes, ctype_solaris26=no)
AC_LANG_C
if test $ctype_solaris26 = "yes"; then
ctype_include_dir="config/solaris/solaris2.6"
AC_MSG_RESULT("solaris2.6")
ctype_default=no
else
ctype_include_dir="config/solaris/solaris2.7"
AC_MSG_RESULT("solaris2.7")
ctype_default=no
fi
fi
fi
dnl Test for <ctype> functionality -- solaris 2.5.1
if test $ctype_default = "yes"; then
AC_MSG_CHECKING([for solaris 2.5.1 <ctype>])
AC_TRY_COMPILE([#include <ctype.h>],
[int
foo (int a)
{ return _U + _L + _N + _S + _P + _C + _X + _B \
+ __ctype[a];}], \
ctype_solaris25=yes, ctype_solaris25=no)
AC_MSG_RESULT($ctype_solaris25)
if test $ctype_solaris25 = "yes"; then
ctype_include_dir="config/solaris/solaris2.5"
ctype_default=no
fi
fi
dnl Test for <ctype> functionality -- aix
if test $ctype_default = "yes"; then
AC_MSG_CHECKING([for aix <ctype>])
AC_TRY_COMPILE([#include <ctype.h>],
[int
foo (int a)
{ return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
+ _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
+ _VALC('a') + _IS('c', 0);}], \
ctype_aix=yes, ctype_aix=no)
AC_MSG_RESULT($ctype_aix)
if test $ctype_aix = "yes"; then
ctype_include_dir="config/aix"
ctype_default=no
fi
fi
dnl Test for <ctype> functionality -- newlib
if test $ctype_default = "yes"; then
AC_MSG_CHECKING([for newlib <ctype>])
AC_TRY_COMPILE([#include <ctype.h>],
[int
foo (int a)
{ return _U + _L + _N + _S + _P + _C + _X + _B \
+ _ctype_[a];}], \
ctype_newlib=yes, ctype_newlib=no)
AC_MSG_RESULT($ctype_newlib)
if test $ctype_newlib = "yes"; then
ctype_include_dir="config/newlib"
ctype_default=no
fi
fi
if test $ctype_default = "yes"; then
ctype_include_dir="config/generic"
AC_MSG_WARN("Using default ctype headers.")
fi
AC_SUBST(ctype_include_dir)
])
])
dnl
dnl Check to see what the underlying c library or math library is like.
dnl
dnl Define HAVE_CARGF etc if "cargf" is found.
dnl
dnl GLIBCPP_CHECK_MATH_SUPPORT
AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
AC_CHECK_LIB(m, sin, libm="-lm")
save_LIBS="$LIBS"
LIBS="$LIBS $libm"
dnl Check for complex versions of math functions of platform.
AC_CHECK_HEADERS([complex.h])
AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf c_log c_logf \
clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt csqrtf \
ctan ctanf ctanh ctanhf \
carg cargf nan hypot hypotf atan2f expf copysignf)
dnl We compile the long double complex functions only if the function
dnl provides the non-complex long double functions.
USE_LONG_DOUBLE=no
AC_CHECK_FUNC(copysignl,
USE_LONG_DOUBLE=yes
AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \
csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l))
AC_SUBST(USE_LONG_DOUBLE)
dnl Check to see if basic C math functions have faster float versions.
AC_CHECK_FUNCS(modf isnan isnanf isnanl isinf isinff isinfl copysign \
copysignl cosf coshf logf log10f powf sinf sinhf sqrtf tanf tanhf \
strtof strtold fabsf sincos sincosf sincosl finite finite fqfinite \
fpclass qfpclass)
#Some runtimes have these functions with a preceding underscore. Please
# keep this sync'd with the one above. And if you add any new symbol,
# please add the corresponding block in the @BOTTOM@ section of
# acconfig.h.
AC_CHECK_FUNCS(_modf _isnan _isnanf _isnanl _isinf _isinff _isinfl _copysign \
_copysignl _cosf _coshf _logf _log10f _powf _sinf _sinhf _sqrtf _tanf _tanhf \
_strtof _strtold _fabsf _sincos _sincosf _sincosl _finite _finitef _qfinite \
_fpclass _qfpclass)
LIBS="$save_LIBS"
])
dnl
dnl Check to see if this target can enable the wchar_t parts of libstdc++.
dnl
dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
dnl Define _GLIBCPP_HAS_WCHAR_MIN_MAX if WCHAR_MIN, WCHAR_MAX in wchar.h
dnl
dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
AC_CHECK_HEADER(wchar.h,[
dnl Test wchar.h for mbstate_t, which is needed for char_traits and others.
AC_MSG_CHECKING([for native mbstate_t])
AC_TRY_COMPILE([#include <wchar.h>],
[mbstate_t teststate;],
use_native_mbstatet=yes, use_native_mbstatet=no)
AC_MSG_RESULT($use_native_mbstatet)
if test $use_native_mbstatet = "no"; then
AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
fi
dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
dnl numeric_limits can instantiate type_traits<wchar_t>
AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
AC_TRY_COMPILE([#include <wchar.h>],
[int i = WCHAR_MIN; int j = WCHAR_MAX;],
has_wchar_minmax=yes, has_wchar_minmax=no)
AC_MSG_RESULT($has_wchar_minmax)
if test $has_wchar_minmax = "yes"; then
AC_DEFINE(_GLIBCPP_HAS_WCHAR_MIN_MAX)
fi
# Test wchar.h for WEOF, which is what we use to determine whether
# to specialize for wchar_t or not.
AC_MSG_CHECKING([for WEOF])
AC_TRY_COMPILE([
#include <wchar.h>
#include <stddef.h>],
[wint_t i = WEOF;],
has_weof=yes, has_weof=no)
AC_MSG_RESULT($has_weof)
dnl Tests for wide character functions.
AC_REPLACE_STRINGFUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset)
AC_SUBST(libinst_wstring_la)
AC_MSG_CHECKING([for wide character support])
if test $has_weof = "yes" && test $has_wchar_minmax = "yes"; then
libinst_wstring_la="libinst-wstring.la"
AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
AC_MSG_RESULT(ok)
else
libinst_wstring_la=""
AC_MSG_RESULT("not specializing for wchar_t")
fi
],[
AC_MSG_WARN([<wchar.h> not found])
AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
])
])
dnl
dnl Check to see if this version of GNU C++ is afflicted by bugs in
dnl __complex__ float support.
dnl
dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
dnl
dnl GLIBCPP_CHECK_COMPLEX_FLOAT_SUPPORT
AC_DEFUN(GLIBCPP_CHECK_COMPLEX_FLOAT_SUPPORT, [
AC_REQUIRE([AC_PROG_CXX])
AC_MSG_CHECKING([for GNU C++ __complex__ float support])
AC_CACHE_VAL(glibcpp_cv_float_complex, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
rm -f conftest.h
cat > conftest.h <<EOB
//
// Check for buggy __complex__ that causes ICE in most versions of egcs
// and gcc-2.95.x on certain platforms (eg., x86-win32).
//
// See http://egcs.cygnus.com/ml/gcc-bugs/1999-07/msg00845.html for
// more info on the bug itself.
//
struct
float_complex
{
__complex__ float m_value;
float_complex (float = 0.0f, float = 0.0f);
float_complex (__complex__ float val) : m_value (val) {}
float_complex foo (const float_complex &val)
{ return float_complex (~val.m_value); }
};
EOB
AC_TRY_COMPILE([#include "conftest.h"], ,
glibcpp_cv_float_complex=ok,
glibcpp_cv_float_complex=buggy
)
AC_LANG_RESTORE
])
AC_MSG_RESULT($glibcpp_cv_float_complex)
if test $glibcpp_cv_float_complex = buggy; then
AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
fi
])
dnl
dnl
dnl Check to see if this version of GNU C++ is afflicted by bugs in
dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
dnl gcc-2.95.x when using the library, unless we define the default copy
dnl ctor in the specializations of complex<>.
dnl
dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
dnl
dnl GLIBCPP_CHECK_COMPLEX_SUPPORT
AC_DEFUN(GLIBCPP_CHECK_COMPLEX_SUPPORT, [
AC_REQUIRE([AC_PROG_CXX])
AC_MSG_CHECKING([for GNU C++ __complex__ support])
AC_CACHE_VAL(glibcpp_cv_complex, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
[ dcomplex x; f(x); ],
glibcpp_cv_complex=ok,
glibcpp_cv_complex=buggy
)
AC_LANG_RESTORE
])
AC_MSG_RESULT($glibcpp_cv_complex)
if test $glibcpp_cv_complex = buggy; then
AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
fi
])
dnl
dnl Check for certain special build configurations.
dnl
dnl GLIBCPP_ENABLE_DEBUG
dnl --enable-debug sets '-ggdb -O0'.
dnl --disable-debug sets '-g' and whatever optimization options the
dnl compiler can handle.
dnl + Perhaps --enable-maintainer-mode should automatically turn this on?
dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
dnl defaults to `no'.
AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
AC_ARG_ENABLE(debug,
changequote(<<, >>)dnl
<< --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
changequote([, ])dnl
[case "$enableval" in
yes) enable_debug=yes ;;
no) enable_debug=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
esac],
enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
dnl Option parsed, now set things appropriately
case "$enable_debug" in
yes)
DEBUGFLAGS='-O0 -ggdb'
;;
no)
DEBUGFLAGS='-g'
;;
esac
AC_SUBST(DEBUGFLAGS)
])
dnl
dnl Check for certain special build configurations.
dnl
dnl GLIBCPP_ENABLE_NAMESPACES
dnl --enable-namespaces sets '-fhonor-std' and defines _GLIBCPP_USE_NAMESPACES
dnl --disable-namespaces sets '-fno-honor-std' (the macro should be
dnl undefined by default in whatever.h.in).
dnl + Eventually, this will go away.
dnl + Usage: GLIBCPP_ENABLE_NAMESPACES[(DEFAULT)]
dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
dnl defaults to `no'.
AC_DEFUN(GLIBCPP_ENABLE_NAMESPACES, [dnl
define([GLIBCPP_ENABLE_NAMESPACES_DEFAULT], ifelse($1, yes, yes, no))dnl
AC_ARG_ENABLE(namespaces,
changequote(<<, >>)dnl
<< --enable-namespaces turns on 'std' [default=>>GLIBCPP_ENABLE_NAMESPACES_DEFAULT],
changequote([, ])dnl
[case "$enableval" in
yes) enable_namespaces=yes ;;
no) enable_namespaces=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable namespaces]) ;;
esac],
enable_namespaces=GLIBCPP_ENABLE_NAMESPACES_DEFAULT)dnl
dnl Option parsed, now set things appropriately
case "$enable_namespaces" in
yes) NAMESPACES='-fhonor-std'
AC_DEFINE(_GLIBCPP_USE_NAMESPACES)
;;
no) NAMESPACES='-fno-honor-std'
;;
esac
AC_SUBST(NAMESPACES)
])
dnl
dnl Check for instructions to automatically rebuild libgcc.a. Requires,
dnl of course, the location of the gcc objdir. Note that if --disable-
dnl namespaces is in effect, rebuilding libgcc.a is an expensive no-op.
dnl
dnl GLIBCPP_ENABLE_RELIBGCC
dnl --enable-libgcc-rebuild=/absolute/path/to/gcc/objdir sets GCC_OBJDIR
dnl (presumably in the top-level Makefile) to /absol.../objdir
dnl --disable-libgcc-rebuild will not touch libgcc.a at all (maybe print
dnl a warning if this is given along with --enable-namespaces), by
dnl setting GCC_OBJDIR to `no'.
dnl + Doing this by default is going to be interesting. What default
dnl "on" value can there be?
dnl + Usage: GLIBCPP_ENABLE_RELIBGCC[(DEFAULT)]
dnl The default path should be ../.. if bundled with GCC source.
dnl If ommitted, it defaults to `no'.
dnl
AC_DEFUN(GLIBCPP_ENABLE_RELIBGCC, [dnl
define([GLIBCPP_ENABLE_RELIBGCC_DEFAULT], ifelse($1,, no, $1))dnl
AC_ARG_ENABLE(libgcc-rebuild,
changequote(<<, >>)dnl
<< --enable-libgcc-rebuild=DIR also rebuild libgcc.a; DIR is
the GCC objdir; see install.html>>,
changequote([, ])dnl
[case "$enableval" in
yes) AC_MSG_ERROR([--enable-libgcc-rebuild needs a pathname]) ;;
no) enable_libgcc_rebuild=no ;;
*) if test -d "$enableval" && test -d "${enableval}/gcc" && \
test -d "${enableval}/libiberty"
then
enable_libgcc_rebuild="$enableval"
else
AC_MSG_ERROR(["$enableval" does not appear to be the GCC objdir])
fi
;;
esac],
enable_libgcc_rebuild=GLIBCPP_ENABLE_RELIBGCC_DEFAULT)dnl
GCC_OBJDIR="$enable_libgcc_rebuild"
AC_SUBST(GCC_OBJDIR)
])
dnl
dnl Check for certain special build configurations.
dnl
dnl GLIBCPP_ENABLE_CSTDIO
dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
dnl
dnl default is libio
dnl
AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
AC_MSG_CHECKING([for cstdio to use])
AC_ARG_ENABLE(cstdio,
[ --enable-cstdio enable GNU libio for target io package. (default)
--enable-cstdio=LIB use LIB target-speific io package.],
if test x$enable_cstdio = xno; then
enable_cstdio=libio
fi,
enable_cstdio=libio)
enable_cstdio_flag=$enable_cstdio
dnl Check if a valid thread package
case x${enable_cstdio_flag} in
xlibio | x | xno | xnone | xyes)
# default
CSTDIO_H=c_io_libio.h
CSTDIO_CC=c_io_libio.cc
AC_MSG_RESULT(libio)
# see if we are on a system with libio native (ie, linux)
AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
if test $has_libio = "yes"; then
BUILD_LIBIO_INCLUDE=
need_libio=no
else
BUILD_LIBIO_INCLUDE='-I../libio'
need_libio=yes
fi
AC_SUBST(BUILD_LIBIO_INCLUDE)
# see if the _G_config.h header needs to be built.
# NB: This replaces the _G_CONFIG_H machinery in libio-v2
AC_CHECK_HEADER(_G_config.h, has_gconf_h=yes, has_gconf_h=no)
AM_CONDITIONAL(GLIBCPP_NEED_LIBIO_CONFIG_H, test "$has_gconf_h" = no)
;;
xwince)
CSTDIO_H=c_io_wince.h
CSTDIO_CC=c_io_wince.cc
AC_MSG_RESULT(wince)
need_libio=no
BUILD_LIBIO_INCLUDE=
AC_SUBST(BUILD_LIBIO_INCLUDE)
;;
*)
echo "$enable_cstdio is an unknown io package" 1>&2
exit 1
;;
esac
AC_SUBST(CSTDIO_H)
AC_SUBST(CSTDIO_CC)
AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
])
dnl
dnl Check for certain special build configurations.
dnl
dnl GLIBCPP_ENABLE_THREADS
dnl --enable-threads=posix sets config/threads-posix.h et. al.
dnl
dnl default is no threads
dnl
AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
dnl Note this comes from the gcc/config.in and libjava/config.in
dnl Efforts should be made to keep this in sync.
AC_MSG_CHECKING([for threads package to use])
AC_ARG_ENABLE(threads,
[ --enable-threads enable thread usage for target GCC.
--enable-threads=LIB use LIB thread package for target GCC.],
if test x$enable_threads = xno; then
enable_threads=''
fi,
enable_threads='')
enable_threads_flag=$enable_threads
dnl Check if a valid thread package
case x${enable_threads_flag} in
x | xno | xnone)
# No threads
target_thread_file='single'
;;
xyes)
# default
target_thread_file=''
;;
xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
xsolaris | xwin32 | xdce | xvxworks)
target_thread_file=$enable_threads_flag
;;
*)
echo "$enable_threads is an unknown thread package" 1>&2
exit 1
;;
esac
dnl Check for thread package actually supported in libstdc++
case "$target_thread_file" in
no | none | single)
THREADS=none
;;
posix | pthreads)
THREADS=posix
case "$host" in
*-*-linux*)
;;
esac
;;
decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
AC_MSG_ERROR(thread package $THREADS not yet supported)
;;
*)
AC_MSG_ERROR($THREADS is an unknown thread package)
;;
esac
AC_MSG_RESULT($THREADS)
THREADLIBS=
THREADINCS=
THREADDEPS=
THREADOBJS=
THREADH=
THREADSPEC=
case "$THREADS" in
posix)
AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
THREADLIBS=-lpthread
THREADSPEC=-lpthread
dnl Not presently used
dnl THREADOBJS=threads-posix.lo
THREADH=threads-posix.h
;;
none)
dnl Not presently used
dnl THREADOBJS=threads-no.lo
THREADH=threads-no.h
;;
esac
AC_SUBST(THREADLIBS)
AC_SUBST(THREADINCS)
AC_SUBST(THREADDEPS)
AC_SUBST(THREADOBJS)
AC_SUBST(THREADSPEC)
])
dnl
dnl Check for certain special build configurations.
dnl
dnl GLIBCPP_ENABLE_LONG_LONG
dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
dnl defaults to `no'.
dnl
dnl GLIBCPP_ENABLE_LONG_LONG
AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
AC_ARG_ENABLE(long-long,
changequote(<<, >>)dnl
<<--enable-long_long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
changequote([, ])dnl
[case "$enableval" in
yes) enable_long_long=yes ;;
no) enable_long_long=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
esac],
enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
dnl Option parsed, now set things appropriately
case "$enable_long_long" in
yes) AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
;;
esac
])
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