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Build: Bump all toolchains to GCC 4.9.4 + Binutils 2.26.1

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GCC 4.9.4 was already used for MIPS and all hosted targets; this enables
it across the board for everything (ie m68k and arm native)

Other changes:

 * Use '-Os' as the default optiomization for all targets
   (was only disabled for arm native)
 * Enable -funit-at-a-time and -Wextra
 * Drop all obsolete toolchain patches
 * Update ARM multilib/exception patch
 * Bump toolchain libs (gmp, mpfr, mpc) to recommended versions, and
   add 'isl' to enable better optimization & vectorization opportunities.

   (Will revisit optimization for the codecs and plugins at a later date)

Confirmed working:

 * armv4t     (ipodmini2g and many other PP502x targets)
 * arm >= v5  (sansaclipplus, ipod6g, ipodnano2g, sansafuzeplus)
 * m68k (ihp100)

Change-Id: If9ed405ae0f289d9adea46d4cf46bfefc2f4250d
This commit is contained in:
Solomon Peachy 2020-03-27 15:31:30 -04:00
parent e91f89a410
commit b4865b05b0
8 changed files with 92 additions and 722 deletions
Download patch file Download diff file Expand all files Collapse all files

56
tools/toolchain-patches/rockbox-multilibs-noexceptions-arm-elf-eabi-gcc-4.9.4.diff Normal file
View file

@ -0,0 +1,56 @@
diff -Naur gcc-4.9.4/gcc/config/arm/t-arm-elf gcc-4.9.4-fixed/gcc/config/arm/t-arm-elf
--- gcc-4.9.4/gcc/config/arm/t-arm-elf 2014-01-02 17:23:26.000000000 -0500
+++ gcc-4.9.4-fixed/gcc/config/arm/t-arm-elf 2020-07-01 22:11:01.198403110 -0400
@@ -44,6 +44,11 @@
#MULTILIB_EXCEPTIONS += *mcpu=fa526/*mfloat-abi=hard*
#MULTILIB_EXCEPTIONS += *mcpu=fa626/*mfloat-abi=hard*
+# We build a lib for each specific CPU Rockbox targets. If anyone knows a better
+# way to do this, please let us know.
+MULTILIB_OPTIONS += mcpu=arm7tdmi/mcpu=arm9tdmi/mcpu=arm9e/mcpu=arm926ej-s/mcpu=arm1136jf-s
+MULTILIB_DIRNAMES += arm7tdmi arm9tdmi arm9e arm926ej-s arm1136jf-s
+
# MULTILIB_OPTIONS += mcpu=ep9312
# MULTILIB_DIRNAMES += ep9312
# MULTILIB_EXCEPTIONS += *mthumb/*mcpu=ep9312*
@@ -56,8 +61,8 @@
# MULTILIB_DIRNAMES += fpu soft
# MULTILIB_EXCEPTIONS += *mthumb/*mfloat-abi=hard*
#
-# MULTILIB_OPTIONS += mno-thumb-interwork/mthumb-interwork
-# MULTILIB_DIRNAMES += normal interwork
+MULTILIB_OPTIONS += mno-thumb-interwork/mthumb-interwork
+MULTILIB_DIRNAMES += normal interwork
#
# MULTILIB_OPTIONS += fno-leading-underscore/fleading-underscore
# MULTILIB_DIRNAMES += elf under
diff -Naur gcc-4.9.4/libgcc/config/arm/t-bpabi gcc-4.9.4-fixed/libgcc/config/arm/t-bpabi
--- gcc-4.9.4/libgcc/config/arm/t-bpabi 2012-08-17 11:06:06.000000000 -0400
+++ gcc-4.9.4-fixed/libgcc/config/arm/t-bpabi 2020-07-01 22:13:39.103762818 -0400
@@ -17,4 +17,4 @@
# On ARM, specifying -fnon-call-exceptions will needlessly pull in
# the unwinder in simple programs which use 64-bit division. Omitting
# the option is safe.
-LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions
+LIB2_DIVMOD_EXCEPTION_FLAGS := -fno-exceptions -fno-non-call-exceptions
diff -Naur gcc-4.9.4/libgcc/Makefile.in gcc-4.9.4-fixed/libgcc/Makefile.in
--- gcc-4.9.4/libgcc/Makefile.in 2014-01-08 11:37:08.000000000 -0500
+++ gcc-4.9.4-fixed/libgcc/Makefile.in 2020-07-01 22:11:01.199403087 -0400
@@ -495,7 +495,7 @@
ifeq ($(LIB2_DIVMOD_EXCEPTION_FLAGS),)
# Provide default flags for compiling divmod functions, if they haven't been
# set already by a target-specific Makefile fragment.
-LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions -fnon-call-exceptions
+LIB2_DIVMOD_EXCEPTION_FLAGS := -fno-exceptions -fno-non-call-exceptions
endif
# Build LIB2_DIVMOD_FUNCS.
@@ -816,7 +816,7 @@
# libgcc_eh.a, only LIB2ADDEH matters. If we do, only LIB2ADDEHSTATIC and
# LIB2ADDEHSHARED matter. (Usually all three are identical.)
-c_flags := -fexceptions
+c_flags := -fno-exceptions
ifeq ($(enable_shared),yes)