Hi!
The following patch is a revival of the
https://gcc.gnu.org/legacy-ml/gcc-patches/2014-10/msg00771.html
patch. While trunk configured against recent glibc and with linker
--as-needed support doesn't really need to link against -lquadmath
anymore, there are still other targets where libquadmath is still in
use.
As has been discussed, making -static-libgfortran imply statically
linking both libgfortran and libquadmath is undesirable because of
the significant licensing differences between the 2 libraries.
Compared to the 2014 patch, this one doesn't handle -lquadmath
addition in the driver, which to me looks incorrect, libgfortran
configure determines where in libgfortran.spec -lquadmath should
be present if at all and with what it should be wrapper, but
analyzes gfortran -### -static-libgfortran stderr and based on
that figures out what gcc/configure.ac determined.
So far slightly tested on x86_64-linux (and will bootstrap/regtest
it there tonight), but I unfortunately don't have a way to test it
e.g. on Darwin.
Thoughts on this?
2022-08-16 Francois-Xavier Coudert <fxcoud...@gcc.gnu.org>
Jakub Jelinek <ja...@redhat.com>
PR fortran/46539
gcc/
* common.opt (static-libquadmath): New option.
* gcc.c (driver_handle_option): Always accept -static-libquadmath.
* config/darwin.h (LINK_SPEC): Handle -static-libquadmath.
gcc/fortran/
* lang.opt (static-libquadmath): New option.
* invoke.texi (-static-libquadmath): Document it.
* options.c (gfc_handle_option): Error out if -static-libquadmath
is passed but we do not support it.
libgfortran/
* acinclude.m4 (LIBQUADSPEC): From $FC -static-libgfortran -###
output determine -Bstatic/-Bdynamic, -bstatic/-bdynamic,
-aarchive_shared/-adefault linker support or Darwin remapping
of -lgfortran to libgfortran.a%s and use that around or instead
of -lquadmath in LIBQUADSPEC.
* configure: Regenerated.
--- gcc/common.opt.jj 2022-06-27 11:18:02.050066582 +0200
+++ gcc/common.opt 2022-08-16 14:51:04.611673800 +0200
@@ -3601,6 +3601,10 @@ static-libphobos
Driver
; Documented for D, but always accepted by driver.
+static-libquadmath
+Driver
+; Documented for Fortran, but always accepted by driver.
+
static-libstdc++
Driver
--- gcc/gcc.cc.jj 2022-08-11 09:57:24.765334380 +0200
+++ gcc/gcc.cc 2022-08-16 14:57:54.708327024 +0200
@@ -4585,12 +4585,14 @@ driver_handle_option (struct gcc_options
case OPT_static_libgcc:
case OPT_shared_libgcc:
case OPT_static_libgfortran:
+ case OPT_static_libquadmath:
case OPT_static_libphobos:
case OPT_static_libstdc__:
/* These are always valid, since gcc.cc itself understands the
first two, gfortranspec.cc understands -static-libgfortran,
- d-spec.cc understands -static-libphobos, and g++spec.cc
- understands -static-libstdc++ */
+ d-spec.cc understands -static-libphobos, g++spec.cc
+ understands -static-libstdc++ and libgfortran.spec handles
+ -static-libquadmath. */
validated = true;
break;
--- gcc/config/darwin.h.jj 2022-08-16 14:51:14.529544492 +0200
+++ gcc/config/darwin.h 2022-08-16 14:53:54.402460097 +0200
@@ -443,6 +443,7 @@ extern GTY(()) int darwin_ms_struct;
%:replace-outfile(-lobjc libobjc-gnu.a%s); \
:%:replace-outfile(-lobjc -lobjc-gnu )}}\
%{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran
libgfortran.a%s)}\
+ %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lquadmath
libquadmath.a%s)}\
%{static|static-libgcc|static-libphobos:%:replace-outfile(-lgphobos
libgphobos.a%s)}\
%{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp
libgomp.a%s)}\
%{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++
libstdc++.a%s)}\
--- gcc/fortran/lang.opt.jj 2022-02-04 14:36:55.050604670 +0100
+++ gcc/fortran/lang.opt 2022-08-16 14:52:52.459267705 +0200
@@ -863,6 +863,10 @@ static-libgfortran
Fortran
Statically link the GNU Fortran helper library (libgfortran).
+static-libquadmath
+Fortran
+Statically link the GCC Quad-Precision Math Library (libquadmath).
+
std=f2003
Fortran
Conform to the ISO Fortran 2003 standard.
--- gcc/fortran/options.cc.jj 2022-01-18 11:58:59.568982256 +0100
+++ gcc/fortran/options.cc 2022-08-16 14:56:22.807525218 +0200
@@ -692,6 +692,13 @@ gfc_handle_option (size_t scode, const c
#endif
break;
+ case OPT_static_libquadmath:
+#ifndef HAVE_LD_STATIC_DYNAMIC
+ gfc_fatal_error ("%<-static-libquadmath%> is not supported in this "
+ "configuration");
+#endif
+ break;
+
case OPT_fintrinsic_modules_path:
case OPT_fintrinsic_modules_path_:
--- gcc/fortran/invoke.texi.jj 2022-05-09 09:09:20.312473272 +0200
+++ gcc/fortran/invoke.texi 2022-08-16 16:12:47.638203577 +0200
@@ -170,7 +170,7 @@ and warnings}.
@item Link Options
@xref{Link Options,,Options for influencing the linking step}.
-@gccoptlist{-static-libgfortran}
+@gccoptlist{-static-libgfortran -static-libquadmath}
@item Runtime Options
@xref{Runtime Options,,Options for influencing runtime behavior}.
@@ -1425,6 +1425,20 @@ configured, this option has no effect.
@end table
+@table @gcctabopt
+@item -static-libquadmath
+@opindex @code{static-libquadmath}
+On systems that provide @file{libquadmath} as a shared and a static
+library, this option forces the use of the static version. If no
+shared version of @file{libquadmath} was built when the compiler was
+configured, this option has no effect.
+
+Please note that the @file{libquadmath} runtime library is licensed under the
+GNU Lesser General Public License (LGPL), and linking it statically introduces
+requirements on redistributing the resulting binaries.
+@end table
+
+
@node Runtime Options
@section Influencing runtime behavior
@cindex options, runtime
--- libgfortran/acinclude.m4.jj 2022-06-29 17:05:45.478790781 +0200
+++ libgfortran/acinclude.m4 2022-08-16 16:06:50.047814043 +0200
@@ -356,18 +356,39 @@ AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [
ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag
])
+ dnl Determine -Bstatic ... -Bdynamic etc. support from gfortran -###
stderr.
+ touch conftest1.$ac_objext conftest2.$ac_objext
+ LQUADMATH=-lquadmath
+ $FC -static-libgfortran -### -o conftest \
+ conftest1.$ac_objext -lgfortran conftest2.$ac_objext 2>&1 >/dev/null \
+ | grep "conftest1.$ac_objext.*conftest2.$ac_objext" > conftest.cmd
+ if grep "conftest1.$ac_objext.* -Bstatic -lgfortran -Bdynamic
.*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:-Bstatic} -lquadmath
%{static-libquadmath:-Bdynamic}"
+ elif grep "conftest1.$ac_objext.* -bstatic -lgfortran -bdynamic
.*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:-bstatic} -lquadmath
%{static-libquadmath:-bdynamic}"
+ elif grep "conftest1.$ac_objext.* -aarchive_shared -lgfortran -adefault
.*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:-aarchive_shared} -lquadmath
%{static-libquadmath:-adefault}"
+ elif grep "conftest1.$ac_objext.* ligfortran.a .*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:libquadmath.a%s;:-lquadmath}"
+ fi
+ rm -f conftest1.$ac_objext conftest2.$ac_objext conftest conftest.cmd
+
dnl For static libgfortran linkage, depend on libquadmath only if needed.
dnl If using *f128 APIs from libc/libm, depend on libquadmath only if
needed
dnl even for dynamic libgfortran linkage, and don't link libgfortran
against
dnl -lquadmath.
if test "x$libgfor_cv_have_as_needed" = xyes; then
if test "x$USE_IEC_60559" = xyes; then
- LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath
$libgfor_cv_no_as_needed_option"
+ LIBQUADSPEC="$libgfor_cv_as_needed_option $LQUADMATH
$libgfor_cv_no_as_needed_option"
else
- LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option}
-lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
+ LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option}
$LQUADMATH %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
fi
else
- LIBQUADSPEC="-lquadmath"
+ LIBQUADSPEC="$LQUADMATH"
fi
if test "x$USE_IEC_60559" != xyes; then
if test -f ../libquadmath/libquadmath.la; then
--- libgfortran/configure.jj 2022-06-29 17:05:45.483790716 +0200
+++ libgfortran/configure 2022-08-16 16:06:54.119761574 +0200
@@ -30323,14 +30323,34 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgfor_cv_have_as_needed"
>&5
$as_echo "$libgfor_cv_have_as_needed" >&6; }
+ touch conftest1.$ac_objext conftest2.$ac_objext
+ LQUADMATH=-lquadmath
+ $FC -static-libgfortran -### -o conftest \
+ conftest1.$ac_objext -lgfortran conftest2.$ac_objext 2>&1 >/dev/null \
+ | grep "conftest1.$ac_objext.*conftest2.$ac_objext" > conftest.cmd
+ if grep "conftest1.$ac_objext.* -Bstatic -lgfortran -Bdynamic
.*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:-Bstatic} -lquadmath
%{static-libquadmath:-Bdynamic}"
+ elif grep "conftest1.$ac_objext.* -bstatic -lgfortran -bdynamic
.*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:-bstatic} -lquadmath
%{static-libquadmath:-bdynamic}"
+ elif grep "conftest1.$ac_objext.* -aarchive_shared -lgfortran -adefault
.*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:-aarchive_shared} -lquadmath
%{static-libquadmath:-adefault}"
+ elif grep "conftest1.$ac_objext.* ligfortran.a .*conftest2.$ac_objext" \
+ conftest.cmd >/dev/null 2>&1; then
+ LQUADMATH="%{static-libquadmath:libquadmath.a%s;:-lquadmath}"
+ fi
+ rm -f conftest1.$ac_objext conftest2.$ac_objext conftest conftest.cmd
+
if test "x$libgfor_cv_have_as_needed" = xyes; then
if test "x$USE_IEC_60559" = xyes; then
- LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath
$libgfor_cv_no_as_needed_option"
+ LIBQUADSPEC="$libgfor_cv_as_needed_option $LQUADMATH
$libgfor_cv_no_as_needed_option"
else
- LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option}
-lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
+ LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option}
$LQUADMATH %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
fi
else
- LIBQUADSPEC="-lquadmath"
+ LIBQUADSPEC="$LQUADMATH"
fi
if test "x$USE_IEC_60559" != xyes; then
if test -f ../libquadmath/libquadmath.la; then
Jakub
