MFC r305855, r306297, r306300, r306312-r306313

When MAKEOBJDIRPREFIX points to a case-insensitive file system, the
build can break when different source files create the same object
files (case-insensitivity speaking).  This is the case for object
files compiled with -fpic and shared libraries. The former uses
an extension of ".So", and the latter an extension ".so".  Rename
shared object files from *.So to *.pico to match what NetBSD does.

Also:
 o  Compile _Exit.c as C99_Exit.c, as it conflicts with _exit.s
 o  Add entry to UPDATING
 o  Document .pico extension

1 files changed, 7 insertions, 7 deletions

diff --git a/gnu/lib/libgcc/Makefile b/gnu/lib/libgcc/Makefile
index a6d14f9..64baf1b 100644
--- a/gnu/lib/libgcc/Makefile
+++ b/gnu/lib/libgcc/Makefile
@@ -254,8 +254,8 @@ OBJ_GRPS +=	FPBIT DPBIT
 .for T in ${OBJ_GRPS}
 ${T}_OBJS_T =	${${T}_FUNCS:S/$/.o/}
 ${T}_OBJS_P =	${${T}_FUNCS:S/$/.po/}
-${T}_OBJS_S =	${${T}_FUNCS:S/$/.So/}
-SOBJS +=	${${T}_FUNCS:S/$/.So/}
+${T}_OBJS_S =	${${T}_FUNCS:S/$/.pico/}
+SOBJS +=	${${T}_FUNCS:S/$/.pico/}
 
 ${${T}_OBJS_T}: ${${T}_CFILE} ${COMMONHDRS}
 	${CC_T} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
@@ -270,7 +270,7 @@ ${${T}_OBJS_S}: ${${T}_CFILE} ${COMMONHDRS}
 # Extra objects coming from separate files
 #
 .if !empty(LIB2ADD)
-SOBJS +=	${LIB2ADD:R:S/$/.So/}
+SOBJS +=	${LIB2ADD:R:S/$/.pico/}
 .endif
 
 #-----------------------------------------------------------------------
@@ -294,9 +294,9 @@ ${STAT_OBJS_P}:	${STD_CFILE} ${COMMONHDRS}
 .if defined(LIB1ASMSRC)
 ASM_T =		${LIB1ASMFUNCS:S/$/.o/}
 ASM_P =		${LIB1ASMFUNCS:S/$/.po/}
-ASM_S =		${LIB1ASMFUNCS:S/$/.So/}
+ASM_S =		${LIB1ASMFUNCS:S/$/.pico/}
 ASM_V =		${LIB1ASMFUNCS:S/$/.vis/}
-SOBJS +=	${LIB1ASMFUNCS:S/$/.So/}
+SOBJS +=	${LIB1ASMFUNCS:S/$/.pico/}
 
 ${ASM_T}: ${LIB1ASMSRC} ${.PREFIX}.vis
 	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
@@ -323,7 +323,7 @@ CLEANFILES += ${ASM_V} ${ASM_V:R:S/$/.vo/}
 #
 EH_OBJS_T = ${LIB2ADDEHSTATIC:R:S/$/.o/}
 EH_OBJS_P = ${LIB2ADDEHSTATIC:R:S/$/.po/}
-EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.So/}
+EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.pico/}
 EH_CFLAGS = -fexceptions -D__GLIBC__=3 -DElfW=__ElfN
 .if ${TARGET_CPUARCH} != "riscv64"
 # RISCVTODO: unwinding support
@@ -337,7 +337,7 @@ ${_src:R:S/$/.po/}: ${_src} ${COMMONHDRS}
 	${CC_P} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
 .endfor
 .for _src in ${LIB2ADDEHSHARED:M*.c}
-${_src:R:S/$/.So/}: ${_src} ${COMMONHDRS}
+${_src:R:S/$/.pico/}: ${_src} ${COMMONHDRS}
 	${CC_S} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
 .endfor