On Tue, Jul 15, 2025 at 2:51 PM John Ericson <John.Ericson@obsidian.systems> wrote: > > This dates back to the creation of top-level `libgcc` in > fa9585134f6f58fa0d3da3ca4ad5493855aea2dc. I strongly suspect that this > does nothing.
So looking into this further, MACHMODE_H used part of LIBGCC_DEPS because of TM_H and r0-78222-gfa9585134f6f58 moved away from including tm.h from libgcc. It was copied over unused. > > (For context, my overall goal here is hoping libgcc can depend on > fewer/no stuff that is generated by `gcc/Makefile`. This is me trying to > pluck some low-hanging fruit -- this is the only direct mention of > `insn-modes.h` in libgcc.) There are only a few things left: GCC_CFLAGS; `$(CFLAGS_FOR_TARGET) $(INTERNAL_CFLAGS) $(T_CFLAGS) $(LOOSE_WARN) $(C_LOOSE_WARN)` I am not sure how to remove that. INHIBIT_LIBC_CFLAGS; looks complicated to remove TARGET_SYSTEM_ROOT; this one should be easy I think; just `$CC -print-sysroot` should print it out ... NO_PIE_CFLAGS; check if __PIE__ is defined by the compiler and if so add -fno-PIE to the CFLAGS Thanks, Andrew Pinski > --- > libgcc/Makefile.in | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in > index 0719fd0615d..f7b48dceb06 100644 > --- a/libgcc/Makefile.in > +++ b/libgcc/Makefile.in > @@ -193,7 +193,6 @@ AWK = @AWK@ > GCC_FOR_TARGET = $(CC) > LIPO = @LIPO@ > LIPO_FOR_TARGET = $(LIPO) > -MACHMODE_H = machmode.h mode-classes.def insn-modes.h > NM = @NM@ > NM_FOR_TARGET = $(NM) > RANLIB_FOR_TARGET = $(RANLIB) > @@ -220,7 +219,6 @@ export INSTALL_DATA > export LIB1ASMSRC > export LIBGCC2_CFLAGS > export LIPO_FOR_TARGET > -export MACHMODE_H > export NM_FOR_TARGET > export STRIP_FOR_TARGET > export RANLIB_FOR_TARGET > -- > 2.47.2 >
