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build the ps2 platform entirely with freesce: --freesce premake option

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premake5 gmake --freesce retargets the one ps2 platform at freesce
(its own ee-gcc 2.9 + newlib; FREESCE/FREESCE_GCC roots, defaulting
to /usr/local/freesce) -- a premake-time choice since the 2.9 and 3.2
C++ ABIs don't link. The tools/freesce wrappers strip premake's
gcc-3-style dep flags. demoreel_cd_freesce.elf now links with zero
SCE inputs: freesce crt chain, newlib libc/libm, and ctorgen to
register the PluginList ctors gcc 2.9 leaves orphaned.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
aap
2026-08-26 17:53:21 +02:00
parent ecb52a56f7
commit 18532c2e13
6 changed files with 212 additions and 25 deletions
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premake5.lua
+36 -4
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@@ -38,6 +38,11 @@ newoption {
default = "../SDL3-3.2.22",
}
newoption {
trigger = "freesce",
description = "ps2: build against freesce with its own ee-gcc 2.9, instead of the SCE SDK"
}
workspace "librw"
location "build"
language "C++"
@@ -82,10 +87,33 @@ workspace "librw"
filter { "platforms:ps2" }
defines { "RW_PS2" }
toolset "gcc"
gccprefix 'ee-'
buildoptions { "-nostdlib", "-fno-common" }
includedirs { "$(PS2SDK)/ee/include", "$(PS2SDK)/common/include" }
optimize "Off"
if _OPTIONS["freesce"] then
-- freesce, by the xtc convention: two roots, two axes.
-- FREESCE is the SDK vintage -- a tree root with
-- ee/include and ee/lib under it, which is how an
-- install and a git worktree are both laid out -- and
-- FREESCE_GCC is the compiler root (an env var read by
-- the tools/freesce wrappers), which is not
-- SDK-versioned and so does not derive from it. Both
-- default to /usr/local/freesce. A premake-time choice
-- because the 2.9 and 3.2 C++ ABIs don't link: one
-- flavor per generated tree. The wrappers also strip
-- premake's gcc-3-style dependency flags, which the
-- 2.9 driver rejects.
gccprefix '../tools/freesce/ee-'
buildoptions { "-fno-common", "-fno-exceptions", "-mno-abicalls", "-G0" }
makesettings [[
FREESCE ?= /usr/local/freesce
FREESCE_GCC ?= /usr/local/freesce/ee/gcc
export FREESCE_GCC
]]
includedirs { "$(FREESCE)/ee/include" }
else
gccprefix 'ee-'
buildoptions { "-nostdlib", "-fno-common" }
includedirs { "$(PS2SDK)/ee/include", "$(PS2SDK)/common/include" }
end
filter { "platforms:*amd64*" }
architecture "x86_64"
@@ -120,10 +148,14 @@ workspace "librw"
Bindir = "bin/%{cfg.platform}/%{cfg.buildcfg}"
function vucode()
-- with --freesce, its own dvp-as by its root, not from PATH
local dvpas = _OPTIONS["freesce"]
and '$(or $(FREESCE_GCC),/usr/local/freesce/ee/gcc)/bin/ee-dvp-as'
or 'ee-dvp-as'
filter "files:**.dsm"
buildmessage 'dvp-as %{file.name}'
buildcommands {
'cpp -x assembler-with-cpp "%{file.abspath}" | ee-dvp-as -I "%{file.directory}" -o "%{cfg.objdir}/%{file.basename}.o"'
'cpp -x assembler-with-cpp "%{file.abspath}" | ' .. dvpas .. ' -I "%{file.directory}" -o "%{cfg.objdir}/%{file.basename}.o"'
}
buildoutputs { '%{cfg.objdir}/%{file.basename}.o' }
filter {}