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fortran: Add -static-libquadmath support [PR46539]
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 wrapped, but analyzes gfortran -### -static-libgfortran stderr and based on that figures out what gcc/configure.ac determined. 2022-08-17 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org> Jakub Jelinek <jakub@redhat.com> PR fortran/46539 gcc/ * common.opt (static-libquadmath): New option. * gcc.cc (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.cc (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. Co-Authored-By: Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
This commit is contained in:
Jakub Jelinek
parent
1513512ec7
commit
745be54bd6
@ -3601,6 +3601,10 @@ static-libphobos
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Driver
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; Documented for D, but always accepted by driver.
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static-libquadmath
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Driver
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; Documented for Fortran, but always accepted by driver.
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static-libstdc++
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Driver
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@ -443,6 +443,7 @@ extern GTY(()) int darwin_ms_struct;
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%:replace-outfile(-lobjc libobjc-gnu.a%s); \
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:%:replace-outfile(-lobjc -lobjc-gnu )}}\
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%{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
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%{static|static-libgcc|static-libquadmath:%:replace-outfile(-lquadmath libquadmath.a%s)}\
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%{static|static-libgcc|static-libphobos:%:replace-outfile(-lgphobos libgphobos.a%s)}\
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%{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
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%{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
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@ -170,7 +170,7 @@ and warnings}.
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@item Link Options
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@xref{Link Options,,Options for influencing the linking step}.
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@gccoptlist{-static-libgfortran}
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@gccoptlist{-static-libgfortran -static-libquadmath}
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@item Runtime Options
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@xref{Runtime Options,,Options for influencing runtime behavior}.
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@ -1425,6 +1425,20 @@ configured, this option has no effect.
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@end table
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@table @gcctabopt
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@item -static-libquadmath
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@opindex @code{static-libquadmath}
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On systems that provide @file{libquadmath} as a shared and a static
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library, this option forces the use of the static version. If no
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shared version of @file{libquadmath} was built when the compiler was
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configured, this option has no effect.
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Please note that the @file{libquadmath} runtime library is licensed under the
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GNU Lesser General Public License (LGPL), and linking it statically introduces
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requirements when redistributing the resulting binaries.
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@end table
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@node Runtime Options
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@section Influencing runtime behavior
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@cindex options, runtime
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@ -863,6 +863,10 @@ static-libgfortran
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Fortran
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Statically link the GNU Fortran helper library (libgfortran).
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static-libquadmath
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Fortran
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Statically link the GCC Quad-Precision Math Library (libquadmath).
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std=f2003
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Fortran
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Conform to the ISO Fortran 2003 standard.
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@ -692,6 +692,13 @@ gfc_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value,
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#endif
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break;
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case OPT_static_libquadmath:
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#ifndef HAVE_LD_STATIC_DYNAMIC
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gfc_fatal_error ("%<-static-libquadmath%> is not supported in this "
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"configuration");
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#endif
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break;
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case OPT_fintrinsic_modules_path:
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case OPT_fintrinsic_modules_path_:
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@ -4585,12 +4585,14 @@ driver_handle_option (struct gcc_options *opts,
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case OPT_static_libgcc:
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case OPT_shared_libgcc:
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case OPT_static_libgfortran:
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case OPT_static_libquadmath:
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case OPT_static_libphobos:
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case OPT_static_libstdc__:
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/* These are always valid, since gcc.cc itself understands the
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first two, gfortranspec.cc understands -static-libgfortran,
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d-spec.cc understands -static-libphobos, and g++spec.cc
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understands -static-libstdc++ */
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d-spec.cc understands -static-libphobos, g++spec.cc
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understands -static-libstdc++ and libgfortran.spec handles
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-static-libquadmath. */
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validated = true;
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break;
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@ -356,18 +356,39 @@ AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [
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ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag
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])
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dnl Determine -Bstatic ... -Bdynamic etc. support from gfortran -### stderr.
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touch conftest1.$ac_objext conftest2.$ac_objext
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LQUADMATH=-lquadmath
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$FC -static-libgfortran -### -o conftest \
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conftest1.$ac_objext -lgfortran conftest2.$ac_objext 2>&1 >/dev/null \
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| grep "conftest1.$ac_objext.*conftest2.$ac_objext" > conftest.cmd
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if grep "conftest1.$ac_objext.* -Bstatic -lgfortran -Bdynamic .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:-Bstatic} -lquadmath %{static-libquadmath:-Bdynamic}"
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elif grep "conftest1.$ac_objext.* -bstatic -lgfortran -bdynamic .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:-bstatic} -lquadmath %{static-libquadmath:-bdynamic}"
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elif grep "conftest1.$ac_objext.* -aarchive_shared -lgfortran -adefault .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:-aarchive_shared} -lquadmath %{static-libquadmath:-adefault}"
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elif grep "conftest1.$ac_objext.*libgfortran.a .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:libquadmath.a%s;:-lquadmath}"
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fi
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rm -f conftest1.$ac_objext conftest2.$ac_objext conftest conftest.cmd
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dnl For static libgfortran linkage, depend on libquadmath only if needed.
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dnl If using *f128 APIs from libc/libm, depend on libquadmath only if needed
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dnl even for dynamic libgfortran linkage, and don't link libgfortran against
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dnl -lquadmath.
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if test "x$libgfor_cv_have_as_needed" = xyes; then
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if test "x$USE_IEC_60559" = xyes; then
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LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath $libgfor_cv_no_as_needed_option"
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LIBQUADSPEC="$libgfor_cv_as_needed_option $LQUADMATH $libgfor_cv_no_as_needed_option"
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else
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LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
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LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} $LQUADMATH %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
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fi
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else
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LIBQUADSPEC="-lquadmath"
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LIBQUADSPEC="$LQUADMATH"
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fi
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if test "x$USE_IEC_60559" != xyes; then
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if test -f ../libquadmath/libquadmath.la; then
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26
libgfortran/configure
vendored
26
libgfortran/configure
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@ -30323,14 +30323,34 @@ fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgfor_cv_have_as_needed" >&5
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$as_echo "$libgfor_cv_have_as_needed" >&6; }
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touch conftest1.$ac_objext conftest2.$ac_objext
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LQUADMATH=-lquadmath
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$FC -static-libgfortran -### -o conftest \
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conftest1.$ac_objext -lgfortran conftest2.$ac_objext 2>&1 >/dev/null \
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| grep "conftest1.$ac_objext.*conftest2.$ac_objext" > conftest.cmd
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if grep "conftest1.$ac_objext.* -Bstatic -lgfortran -Bdynamic .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:-Bstatic} -lquadmath %{static-libquadmath:-Bdynamic}"
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elif grep "conftest1.$ac_objext.* -bstatic -lgfortran -bdynamic .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:-bstatic} -lquadmath %{static-libquadmath:-bdynamic}"
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elif grep "conftest1.$ac_objext.* -aarchive_shared -lgfortran -adefault .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:-aarchive_shared} -lquadmath %{static-libquadmath:-adefault}"
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elif grep "conftest1.$ac_objext.*libgfortran.a .*conftest2.$ac_objext" \
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conftest.cmd >/dev/null 2>&1; then
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LQUADMATH="%{static-libquadmath:libquadmath.a%s;:-lquadmath}"
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fi
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rm -f conftest1.$ac_objext conftest2.$ac_objext conftest conftest.cmd
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if test "x$libgfor_cv_have_as_needed" = xyes; then
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if test "x$USE_IEC_60559" = xyes; then
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LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath $libgfor_cv_no_as_needed_option"
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LIBQUADSPEC="$libgfor_cv_as_needed_option $LQUADMATH $libgfor_cv_no_as_needed_option"
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else
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LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
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LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} $LQUADMATH %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
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fi
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else
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LIBQUADSPEC="-lquadmath"
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LIBQUADSPEC="$LQUADMATH"
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fi
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if test "x$USE_IEC_60559" != xyes; then
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if test -f ../libquadmath/libquadmath.la; then
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