Thanks for the report.
Here a diff which allows to build both: lang/bootgcc and lang/gcc/16;
you need some patches for both gcc, yeah.
Index: lang/bootgcc/patches/patch-gcc_config_pa_pa-openbsd_h
===================================================================
RCS file: /cvs/ports/lang/bootgcc/patches/patch-gcc_config_pa_pa-openbsd_h,v
diff -u -p -r1.3 patch-gcc_config_pa_pa-openbsd_h
--- lang/bootgcc/patches/patch-gcc_config_pa_pa-openbsd_h 25 Oct 2026
12:56:34 -0000 1.3
+++ lang/bootgcc/patches/patch-gcc_config_pa_pa-openbsd_h 7 Nov 2026
17:22:59 -0000
@@ -6,7 +6,16 @@ Update OpenBSD-specific configuration on
Index: gcc/config/pa/pa-openbsd.h
--- gcc/config/pa/pa-openbsd.h.orig
+++ gcc/config/pa/pa-openbsd.h
-@@ -138,17 +138,31 @@ along with GCC; see the file COPYING3. If not see
+@@ -53,7 +53,7 @@ along with GCC; see the file COPYING3. If not see
+
+ #undef ASM_OUTPUT_ADDR_DIFF_ELT
+ #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+- fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
++ fprintf (FILE, "\t.word .L%d+(.+8-.L%d)-$PIC_pcrel$0\n", VALUE, REL)
+
+ /* Use the default. */
+ #undef ASM_OUTPUT_LABEL
+@@ -138,17 +138,34 @@ along with GCC; see the file COPYING3. If not see
%{shared:-shared} %{R*} \
%{static:-Bstatic} \
%{!static:-Bdynamic} \
@@ -42,3 +51,6 @@ Index: gcc/config/pa/pa-openbsd.h
+
+#undef JUMP_TABLES_IN_TEXT_SECTION
+#define JUMP_TABLES_IN_TEXT_SECTION 0
++
++#undef ASM_OUTPUT_ADDR_VEC
++#undef ASM_OUTPUT_ADDR_DIFF_VEC
Index: lang/bootgcc/patches/patch-gcc_config_pa_pa_md
===================================================================
RCS file: lang/bootgcc/patches/patch-gcc_config_pa_pa_md
diff -N lang/bootgcc/patches/patch-gcc_config_pa_pa_md
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ lang/bootgcc/patches/patch-gcc_config_pa_pa_md 7 Nov 2026 17:22:59
-0000
@@ -0,0 +1,49 @@
+Index: gcc/config/pa/pa.md
+--- gcc/config/pa/pa.md.orig
++++ gcc/config/pa/pa.md
+@@ -7001,8 +7001,10 @@
+
+ if (TARGET_64BIT)
+ emit_jump_insn (gen_casesi64p (operands[0], operands[3]));
+- else if (flag_pic)
++ else if (flag_pic && JUMP_TABLES_IN_TEXT_SECTION)
+ emit_jump_insn (gen_casesi32p (operands[0], operands[3]));
++ else if (flag_pic)
++ emit_jump_insn (gen_casesi32p_rodata (operands[0], operands[3]));
+ else
+ emit_jump_insn (gen_casesi32 (operands[0], operands[3]));
+ DONE;
+@@ -7028,7 +7030,7 @@
+ (label_ref (match_operand 1 "" "")))))
+ (clobber (match_scratch:SI 2 "=&r"))
+ (clobber (match_scratch:SI 3 "=&r"))]
+- "flag_pic"
++ "flag_pic && JUMP_TABLES_IN_TEXT_SECTION"
+ "{bl .+8,%2\;depi 0,31,2,%2|mfia %2}\;ldo {%l1-.|%l1+4-.}(%2),%2\;\
+ {ldwx|ldw},s %0(%2),%3\;{addl|add,l} %2,%3,%3\;bv,n %%r0(%3)"
+ [(set_attr "type" "multi")
+@@ -7036,6 +7038,24 @@
+ (if_then_else (match_test "TARGET_PA_20")
+ (const_int 20)
+ (const_int 24)))])
++
++(define_insn "casesi32p_rodata"
++ [(set (pc) (mem:SI (plus:SI
++ (mult:SI (match_operand:SI 0 "register_operand" "r")
++ (const_int 4))
++ (label_ref (match_operand 1 "" "")))))
++ (clobber (match_scratch:SI 2 "=&a"))
++ (clobber (match_scratch:SI 3 "=&r"))]
++ "flag_pic && !JUMP_TABLES_IN_TEXT_SECTION"
++ "{bl .+8,%2\;depi 0,31,2,%2|mfia %2}\;\
++addil L'%l1-$PIC_pcrel$0+{8|12},%2\;\
++ldo R'%l1-$PIC_pcrel$0+{12|16}(%2),%2\;\
++{ldwx|ldw},s %0(%2),%3\;{addl|add,l} %2,%3,%3\;bv,n %%r0(%3)"
++ [(set_attr "type" "multi")
++ (set (attr "length")
++ (if_then_else (match_test "TARGET_PA_20")
++ (const_int 24)
++ (const_int 28)))])
+
+ ;;; 64-bit code, 32-bit relative branch table.
+ (define_insn "casesi64p"
Index: lang/bootgcc/patches/patch-gcc_configure
===================================================================
RCS file: /cvs/ports/lang/bootgcc/patches/patch-gcc_configure,v
diff -u -p -r1.2 patch-gcc_configure
--- lang/bootgcc/patches/patch-gcc_configure 11 Mar 2022 19:28:50 -0000
1.2
+++ lang/bootgcc/patches/patch-gcc_configure 7 Nov 2026 17:22:59 -0000
@@ -19,7 +19,39 @@ Index: gcc/configure
shlibpath_var=LD_LIBRARY_PATH
if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test
"$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
case $host_os in
-@@ -28864,7 +28864,7 @@ $as_echo "#define HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE 1"
+@@ -23635,7 +23635,14 @@ else
+ then gcc_cv_as_comdat_group=yes
+ fi
+ elif test x$gcc_cv_as != x; then
+- $as_echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s
++ case "$target" in
++ hppa*-*-openbsd*)
++ $as_echo ' .section .text,"axG",@progbits,.foo,comdat' > conftest.s
++ ;;
++ *)
++ $as_echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s
++ ;;
++ esac
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags --fatal-warnings -o conftest.o
conftest.s >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+@@ -23671,7 +23678,14 @@ else
+ then gcc_cv_as_comdat_group_percent=yes
+ fi
+ elif test x$gcc_cv_as != x; then
+- $as_echo '.section .text,"axG",%progbits,.foo,comdat' > conftest.s
++ case "$target" in
++ hppa*-*-openbsd*)
++ $as_echo ' .section .text,"axG",%progbits,.foo,comdat' > conftest.s
++ ;;
++ *)
++ $as_echo '.section .text,"axG",%progbits,.foo,comdat' > conftest.s
++ ;;
++ esac
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags --fatal-warnings -o conftest.o
conftest.s >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+@@ -28864,7 +28878,7 @@ $as_echo "#define HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE 1"
esac
case "$target:$tm_file" in
@@ -28,7 +60,7 @@ Index: gcc/configure
case "$target" in
*le-*-linux*)
emul_name="-melf64lppc"
-@@ -28875,6 +28875,10 @@ case "$target:$tm_file" in
+@@ -28875,6 +28889,10 @@ case "$target:$tm_file" in
*-*-freebsd*)
emul_name="-melf64ppc_fbsd"
;;
@@ -39,7 +71,7 @@ Index: gcc/configure
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker support for
omitting dot symbols" >&5
$as_echo_n "checking linker support for omitting dot symbols... " >&6; }
-@@ -29242,6 +29246,7 @@ else
+@@ -29242,6 +29260,7 @@ else
fi
;;
@@ -47,7 +79,7 @@ Index: gcc/configure
*) gcc_cv_libc_provides_ssp=no ;;
esac
fi
-@@ -29262,6 +29267,7 @@ if test "${enable_default_ssp+set}" = set; then :
+@@ -29262,6 +29281,7 @@ if test "${enable_default_ssp+set}" = set; then :
if test x$gcc_cv_libc_provides_ssp = xyes; then
case "$target" in
ia64*-*-*) enable_default_ssp=no ;;
Index: lang/gcc/16/Makefile
===================================================================
RCS file: /cvs/ports/lang/gcc/16/Makefile,v
diff -u -p -r1.48 Makefile
--- lang/gcc/16/Makefile 6 Nov 2026 08:11:35 -0000 1.48
+++ lang/gcc/16/Makefile 7 Nov 2026 17:22:59 -0000
@@ -67,9 +64,10 @@ EXTRACT_ONLY = ${DISTFILES}
BUILD_DEPENDS += devel/bison
.if ${MACHINE_ARCH} == "aarch64" || ${MACHINE_ARCH} == "amd64" || \
- ${MACHINE_ARCH} == "arm" || ${MACHINE_ARCH} == "i386" || \
- ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "powerpc64" || \
- ${MACHINE_ARCH} == "riscv64" || ${MACHINE_ARCH} == "sparc64"
+ ${MACHINE_ARCH} == "arm" || ${MACHINE_ARCH} == "hppa" || \
+ ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \
+ ${MACHINE_ARCH} == "powerpc64" || ${MACHINE_ARCH} == "riscv64" || \
+ ${MACHINE_ARCH} == "sparc64"
BUILD_DEPENDS += devel/gas
RUN_DEPENDS += devel/gas
RUN_DEPENDS-main += devel/gas
Index: lang/gcc/16/patches/patch-gcc_config_pa_pa-openbsd_h
===================================================================
RCS file: /cvs/ports/lang/gcc/16/patches/patch-gcc_config_pa_pa-openbsd_h,v
diff -u -p -r1.1.1.1 patch-gcc_config_pa_pa-openbsd_h
--- lang/gcc/16/patches/patch-gcc_config_pa_pa-openbsd_h 2 Jun 2026
20:00:17 -0000 1.1.1.1
+++ lang/gcc/16/patches/patch-gcc_config_pa_pa-openbsd_h 7 Nov 2026
17:22:59 -0000
@@ -1,7 +1,16 @@
Index: gcc/config/pa/pa-openbsd.h
--- gcc/config/pa/pa-openbsd.h.orig
+++ gcc/config/pa/pa-openbsd.h
-@@ -138,14 +138,15 @@ along with GCC; see the file COPYING3. If not see
+@@ -53,7 +53,7 @@ along with GCC; see the file COPYING3. If not see
+
+ #undef ASM_OUTPUT_ADDR_DIFF_ELT
+ #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+- fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
++ fprintf (FILE, "\t.word .L%d+(.+8-.L%d)-$PIC_pcrel$0\n", VALUE, REL)
+
+ /* Use the default. */
+ #undef ASM_OUTPUT_LABEL
+@@ -138,17 +138,30 @@ along with GCC; see the file COPYING3. If not see
%{shared:-shared} %{R*} \
%{static:-Bstatic} \
%{!static:-Bdynamic} \
@@ -21,3 +30,18 @@ Index: gcc/config/pa/pa-openbsd.h
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
++/* OpenBSD does not use export stubs, so the return pointer can be used
++ without reading the instruction stream. */
++#undef RETURN_ADDR_RTX
++#define RETURN_ADDR_RTX(COUNT, FRAMEADDR) \
++ ((COUNT) == 0 ? get_hard_reg_initial_val (Pmode, 2) : NULL_RTX)
++
+ #define OBSD_HAS_CORRECT_SPECS
+
+ #define HAVE_ENABLE_EXECUTE_STACK
++
++#undef JUMP_TABLES_IN_TEXT_SECTION
++#define JUMP_TABLES_IN_TEXT_SECTION 0
++
++#undef ASM_OUTPUT_ADDR_VEC
++#undef ASM_OUTPUT_ADDR_DIFF_VEC
Index: lang/gcc/16/patches/patch-gcc_config_pa_pa_md
===================================================================
RCS file: lang/gcc/16/patches/patch-gcc_config_pa_pa_md
diff -N lang/gcc/16/patches/patch-gcc_config_pa_pa_md
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ lang/gcc/16/patches/patch-gcc_config_pa_pa_md 7 Nov 2026 17:22:59
-0000
@@ -0,0 +1,49 @@
+Index: gcc/config/pa/pa.md
+--- gcc/config/pa/pa.md.orig
++++ gcc/config/pa/pa.md
+@@ -7450,8 +7450,10 @@
+
+ if (TARGET_64BIT)
+ emit_jump_insn (gen_casesi64p (operands[0], operands[3]));
+- else if (flag_pic)
++ else if (flag_pic && JUMP_TABLES_IN_TEXT_SECTION)
+ emit_jump_insn (gen_casesi32p (operands[0], operands[3]));
++ else if (flag_pic)
++ emit_jump_insn (gen_casesi32p_rodata (operands[0], operands[3]));
+ else
+ emit_jump_insn (gen_casesi32 (operands[0], operands[3]));
+ DONE;
+@@ -7477,7 +7479,7 @@
+ (label_ref (match_operand 1 "" "")))))
+ (clobber (match_scratch:SI 2 "=&r"))
+ (clobber (match_scratch:SI 3 "=&r"))]
+- "flag_pic"
++ "flag_pic && JUMP_TABLES_IN_TEXT_SECTION"
+ "{bl .+8,%2\;depi 0,31,2,%2|mfia %2}\;ldo {%l1-.|%l1+4-.}(%2),%2\;\
+ {ldwx|ldw},s %0(%2),%3\;{addl|add,l} %2,%3,%3\;bv,n %%r0(%3)"
+ [(set_attr "type" "multi")
+@@ -7485,6 +7487,24 @@
+ (if_then_else (match_test "TARGET_PA_20")
+ (const_int 20)
+ (const_int 24)))])
++
++(define_insn "casesi32p_rodata"
++ [(set (pc) (mem:SI (plus:SI
++ (mult:SI (match_operand:SI 0 "register_operand" "r")
++ (const_int 4))
++ (label_ref (match_operand 1 "" "")))))
++ (clobber (match_scratch:SI 2 "=&a"))
++ (clobber (match_scratch:SI 3 "=&r"))]
++ "flag_pic && !JUMP_TABLES_IN_TEXT_SECTION"
++ "{bl .+8,%2\;depi 0,31,2,%2|mfia %2}\;\
++addil L'%l1-$PIC_pcrel$0+{8|12},%2\;\
++ldo R'%l1-$PIC_pcrel$0+{12|16}(%2),%2\;\
++{ldwx|ldw},s %0(%2),%3\;{addl|add,l} %2,%3,%3\;bv,n %%r0(%3)"
++ [(set_attr "type" "multi")
++ (set (attr "length")
++ (if_then_else (match_test "TARGET_PA_20")
++ (const_int 24)
++ (const_int 28)))])
+
+ ;;; 64-bit code, 32-bit relative branch table.
+ (define_insn "casesi64p"
Index: lang/gcc/16/patches/patch-gcc_configure
===================================================================
RCS file: /cvs/ports/lang/gcc/16/patches/patch-gcc_configure,v
diff -u -p -r1.2 patch-gcc_configure
--- lang/gcc/16/patches/patch-gcc_configure 9 Oct 2026 22:37:51 -0000
1.2
+++ lang/gcc/16/patches/patch-gcc_configure 7 Nov 2026 17:22:59 -0000
@@ -19,7 +19,39 @@ Index: gcc/configure
shlibpath_var=LD_LIBRARY_PATH
if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test
"$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
case $host_os in
-@@ -33389,7 +33389,7 @@ $as_echo "#define HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE 1"
+@@ -27778,7 +27778,14 @@
+ else
+ gcc_cv_as_comdat_group=no
+ if test x"$gcc_cv_as" != x; then
+- $as_echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s
++ case "$target" in
++ hppa*-*-openbsd*)
++ $as_echo ' .section .text,"axG",@progbits,.foo,comdat' > conftest.s
++ ;;
++ *)
++ $as_echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s
++ ;;
++ esac
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags $fw_as_opt -o conftest.o
conftest.s >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+@@ -27809,7 +27816,14 @@
+ else
+ gcc_cv_as_comdat_group_percent=no
+ if test x"$gcc_cv_as" != x; then
+- $as_echo '.section .text,"axG",%progbits,.foo,comdat' > conftest.s
++ case "$target" in
++ hppa*-*-openbsd*)
++ $as_echo ' .section .text,"axG",%progbits,.foo,comdat' > conftest.s
++ ;;
++ *)
++ $as_echo '.section .text,"axG",%progbits,.foo,comdat' > conftest.s
++ ;;
++ esac
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags $fw_as_opt -o conftest.o
conftest.s >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+@@ -33389,7 +33403,7 @@ $as_echo "#define HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE 1"
esac
case "$target:$tm_file" in
@@ -28,7 +60,7 @@ Index: gcc/configure
case "$target" in
*le-*-linux*)
emul_name="-melf64lppc"
-@@ -33403,6 +33403,10 @@ case "$target:$tm_file" in
+@@ -33403,6 +33417,10 @@ case "$target:$tm_file" in
*-*-freebsd*)
emul_name="-melf64ppc_fbsd"
;;
@@ -39,7 +71,7 @@ Index: gcc/configure
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker support for
omitting dot symbols" >&5
$as_echo_n "checking linker support for omitting dot symbols... " >&6; }
-@@ -33702,6 +33706,7 @@ else
+@@ -33702,6 +33720,7 @@ else
fi
;;
@@ -47,7 +79,7 @@ Index: gcc/configure
*) gcc_cv_libc_provides_ssp=no ;;
esac
fi
-@@ -33722,6 +33727,7 @@ if test "${enable_default_ssp+set}" = set; then :
+@@ -33722,6 +33741,7 @@ if test "${enable_default_ssp+set}" = set; then :
if test x$gcc_cv_libc_provides_ssp = xyes; then
case "$target" in
ia64*-*-*) enable_default_ssp=no ;;
@@ -55,7 +87,7 @@ Index: gcc/configure
*) enable_default_ssp=$enableval ;;
esac
else
-@@ -33898,6 +33904,9 @@ $as_echo_n "checking dl_iterate_phdr in target C libra
+@@ -33898,6 +33918,9 @@ $as_echo_n "checking dl_iterate_phdr in target C libra
gcc_cv_target_dl_iterate_phdr=unknown
case "$target" in
*-*-solaris2*)
--
wbr, Kirill
