apache · xiaoxiang781216 · Jul 24, 2026 · Jul 24, 2026
diff --git a/.codespell-ignore-lines b/.codespell-ignore-lines
@@ -179,3 +179,4 @@ libs/libc/tre-mem.c
   /* Followed by one or more ND options */
    *    message using the Neighbor Discovery (ND) protocol. It then listens
 PIO   DUE SCHEM. PIN MAPPING    SAM3X       DUE SCHEM. BOARD LABEL
+    # instruct the gsize to generate a "*.siz" file that contains the detailed section size
@@ -286,7 +286,8 @@ CFLAGS must be provided. First, the option ``-fpic`` is required to tell
 the compiler to generate position independent code (other GCC options,
 like ``-fno-jump-tables`` might also be desirable). For ARM compilers,
 two additional compilation options are required: ``-msingle-pic-base``
-and ``-mpic-register=r10``.
+and ``-mpic-register=r10``.  On ARM these are supplied centrally rather
+than per board; see `Where the ARM PIC flags come from`_ below.
 
 **Target 2**. Given the ``hello.r1`` relocatable object, this target
 will invoke ```mknxflat`` <#mknxflat>`__ to make the *thunk* file,
@@ -326,6 +327,50 @@ object to create the final, NXFLAT module ``hello`` by executing
 **binfmt Registration** NXFLAT calls :c:func:`register_binfmt` to
 incorporate itself into the system.
 
+Where the ARM PIC flags come from
+---------------------------------
+
+On ARM the compilation flags described under **Target 1** are supplied by
+``arch/arm/src/common/Toolchain.defs``, not by each board.  A board only has
+to say something when it differs from the default::
+
+  ARCHPICFLAGS ?= -fpic -msingle-pic-base -mpic-register=r10
+
+  CPICFLAGS   = $(ARCHPICFLAGS) $(filter-out --fixed-r10,$(CFLAGS))
+  CXXPICFLAGS = $(ARCHPICFLAGS) $(filter-out --fixed-r10,$(CXXFLAGS))
+
+``ARCHPICFLAGS`` uses ``?=``, and the two derived variables use deferred
+``=``, so a board that includes this file may still override
+``ARCHPICFLAGS`` afterwards or append to it, and ``CFLAGS`` is whatever the
+board finally set it to.  A few boards do differ: one adds ``-ffixed-r10``
+and one conditionally adds ``-mno-pic-data-is-text-relative``.
+
+Reserving r10 in the base firmware
+----------------------------------
+
+A module reaches its data through r10, and the base firmware has to leave
+that register alone -- otherwise a call *back* from the firmware into module
+code arrives with the wrong data base.  ``qsort()`` with a comparison
+function inside the module is the usual way to meet this.  Under
+``CONFIG_PIC`` the firmware is therefore built with ``--fixed-r10``.
+
+That flag goes into ``ARCHCFLAGS`` rather than ``CFLAGS``, because nearly
+every board ``Make.defs`` includes ``Toolchain.defs`` and then assigns::
+
+  CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) ...
+
+with ``:=``, which discards anything added to ``CFLAGS`` beforehand while
+re-expanding ``ARCHCFLAGS``.  Losing the flag is silent, and the symptom is
+remote from the cause: everything builds, and only a callback into module
+code misbehaves.
+
+The two sides of that contract cannot both appear on one command line.  A
+module gets r10 through ``-mpic-register=r10``, and GCC rejects it alongside
+``--fixed-r10`` with *"unable to use 'r10' for PIC register"*.  Since
+``CPICFLAGS``, ``CXXPICFLAGS``, ``CELFFLAGS`` and ``CXXELFFLAGS`` all derive
+from ``CFLAGS``, the flag is filtered back out where they are defined,
+rather than in every board that builds modules.
+
 Appendix A: No GOT Operation
 ============================
 

diff --git a/arch/arm/src/common/Toolchain.defs b/arch/arm/src/common/Toolchain.defs
@@ -567,6 +567,29 @@ endif
 
 PICFLAGS = -fpic -fPIE -mno-pic-data-is-text-relative -msingle-pic-base
 
+# Flags for building PIC modules (NXFLAT).  These were repeated verbatim in
+# every ARM board Make.defs; they live here so a board only has to say
+# something when it differs, and so the interaction with --fixed-r10 below
+# can be handled in one place instead of 260.
+#
+# A board that needs to differ can still assign ARCHPICFLAGS after including
+# this file, which overrides the default, or append to it.
+
+ARCHPICFLAGS ?= -fpic -msingle-pic-base -mpic-register=r10
+
+# --fixed-r10 reserves r10 across the base firmware so a callback into
+# module code arrives with the module's data base intact.  A module is the
+# other side of that contract: it gets r10 via -mpic-register=r10, and GCC
+# rejects a command line carrying both with "unable to use 'r10' for PIC
+# register".  Since these derive from CFLAGS, the flag has to come back out
+# here.
+#
+# Both are deferred assignments, so CFLAGS and CXXFLAGS are whatever the
+# board finally set them to, even though this file is included first.
+
+CPICFLAGS = $(ARCHPICFLAGS) $(filter-out --fixed-r10,$(CFLAGS))
+CXXPICFLAGS = $(ARCHPICFLAGS) $(filter-out --fixed-r10,$(CXXFLAGS))
+
 ifneq ($(CONFIG_BUILD_PIC),)
   ARCHCFLAGS += $(PICFLAGS) -mpic-register=r9
   ARCHCXXFLAGS += $(PICFLAGS) -mpic-register=r9
@@ -580,11 +603,20 @@ LDMODULEFLAGS = -r -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/elf/gnu-elf.ld)
 
 # ELF module definitions
 
-CELFFLAGS = $(CFLAGS) -fvisibility=hidden -mlong-calls # --target1-abs
-CXXELFFLAGS = $(CXXFLAGS)-fvisibility=hidden -mlong-calls
+# --fixed-r10 is filtered out for the same reason as in CPICFLAGS above:
+# under CONFIG_PIC these gain -mpic-register=r10, which GCC will not
+# accept alongside it.
+
+CELFFLAGS = $(filter-out --fixed-r10,$(CFLAGS)) -fvisibility=hidden \
+            -mlong-calls # --target1-abs
+CXXELFFLAGS = $(filter-out --fixed-r10,$(CXXFLAGS)) -fvisibility=hidden \
+              -mlong-calls
 
 ifeq ($(CONFIG_PIC),y)
-  CFLAGS += --fixed-r10
+  # ARCHCFLAGS, not CFLAGS: board Make.defs reassign CFLAGS with ':='
+  # after including this file, which would discard the flag.
+
+  ARCHCFLAGS += --fixed-r10
   CELFFLAGS += $(PICFLAGS) -mpic-register=r10
   CXXELFFLAGS += $(PICFLAGS) -mpic-register=r10
 

diff --git a/boards/arm/a1x/pcduino-a10/scripts/Make.defs b/boards/arm/a1x/pcduino-a10/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-a/Toolchain.defs
 LDSCRIPT = sdram.ld
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/am335x/beaglebone-black/scripts/Make.defs b/boards/arm/am335x/beaglebone-black/scripts/Make.defs
@@ -29,12 +29,8 @@ include $(TOPDIR)/arch/arm/src/armv7-a/Toolchain.defs
 LDSCRIPT = sdram.ld
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/am67/t3-gem-o1/scripts/Make.defs b/boards/arm/am67/t3-gem-o1/scripts/Make.defs
@@ -29,9 +29,7 @@ ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
 ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10 -ffixed-r10
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/at32/at32f437-mini/scripts/Make.defs b/boards/arm/at32/at32f437-mini/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/c5471/c5471evm/scripts/Make.defs b/boards/arm/c5471/c5471evm/scripts/Make.defs
@@ -49,14 +49,10 @@ else
   ARCHCPUFLAGS = -mapcs-32 -mcpu=arm7tdmi -msoft-float
 endif
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) \
          $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) \
            $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/csk6/csk6011a-nano/scripts/Make.defs b/boards/arm/csk6/csk6011a-nano/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/cxd56xx/spresense/scripts/Make.defs b/boards/arm/cxd56xx/spresense/scripts/Make.defs
@@ -39,12 +39,9 @@ MKNXFLAT = mknxflat
 LDNXFLAT = ldnxflat
 
 ARCHCFLAGS += -mabi=aapcs
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
 
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/dm320/ntosd-dm320/scripts/Make.defs b/boards/arm/dm320/ntosd-dm320/scripts/Make.defs
@@ -46,14 +46,10 @@ else
   ARCHCPUFLAGS = -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float
 endif
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) \
    $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) \
    $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/efm32/efm32-g8xx-stk/scripts/Make.defs b/boards/arm/efm32/efm32-g8xx-stk/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/tools/Config.mk
 LDSCRIPT = efm32-g8xx-stk.ld
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/efm32/efm32gg-stk3700/scripts/Make.defs b/boards/arm/efm32/efm32gg-stk3700/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/tools/Config.mk
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/efm32/olimex-efm32g880f128-stk/scripts/Make.defs b/boards/arm/efm32/olimex-efm32g880f128-stk/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/tools/Config.mk
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/eoss3/quickfeather/scripts/Make.defs b/boards/arm/eoss3/quickfeather/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/Make.defs b/boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/Make.defs
@@ -29,9 +29,7 @@ LDSCRIPT = dramboot.ld
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/gd32f4/gd32f470ik-eval/scripts/Make.defs b/boards/arm/gd32f4/gd32f470ik-eval/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/gd32f4/gd32f470zk-aiotbox/scripts/Make.defs b/boards/arm/gd32f4/gd32f470zk-aiotbox/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/gd32f4/gd32f470zk-eval/scripts/Make.defs b/boards/arm/gd32f4/gd32f470zk-eval/scripts/Make.defs
@@ -27,12 +27,8 @@ include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
 LDSCRIPT = ld.script
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/ht32f491x3/esk32/scripts/Make.defs b/boards/arm/ht32f491x3/esk32/scripts/Make.defs
@@ -28,12 +28,8 @@ LDSCRIPT = ld.script
 
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/imx6/sabre-6quad/scripts/Make.defs b/boards/arm/imx6/sabre-6quad/scripts/Make.defs
@@ -31,12 +31,8 @@ else
 endif
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__
 

diff --git a/boards/arm/imx9/imx93-qsb/scripts/Make.defs b/boards/arm/imx9/imx93-qsb/scripts/Make.defs
@@ -33,12 +33,8 @@ endif
 
 ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
-
 CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
 CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
-CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
 CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS := $(CFLAGS) -D__ASSEMBLY__