+++ /dev/null
-[This file contains two alternative recipes for compiling X11 with GCC.
-The first alternative puts libgcc.a into the shared X library; the second
-does not. Neither alternative works on all kinds of systems.
-It may be that when using GCC 2.4, both alternatives work okay on
-relatively recent Sparc systems. The first alternative is likely
-not to work on a Sun 3 without hardware floating point.]
-
-How to compile X11R5 (patch level 11) with GCC version 2:
-
-The patches include support for building the shared libraries with GCC
-2 on the Sparc and 68k machines. This version includes the necessary
-parts of libgcc.a in the shared library for X, in case functions in
-that library need it. Thus the default behavior is now to build
-everything, including the libraries, with gcc.
-
-If you build the shared library this way, it may not work with
-executables made with older versions of GCC (2.3.3 and earlier).
-If that happens, relink those executables with the latest GCC.
-IF YOU THINK YOU MIGHT COMPILE X FOR SOLARIS 2, then you really don't
-need this patch: get /contrib/R5.SunOS5.patch.tar.Z from
-export.lcs.mit.edu instead. It has everything you need to do the
-build for Solaris 2, sets you up to everything with GCC, and is
-backward compatible with SunOS 4.*. Get the README
-(/contrib/R5.SunOS5.patch.README at export) for more info.
-
-If you see undefined symbols _dlopen, _dlsym, or _dlclose when linking
-with -lX11, compile and link against the file mit/util/misc/dlsym.c in
-the MIT X11R5 distribution. Alternatively, do dynamic linking
-by using a non-GNU ld.
-
-mit/config/Imake.tmpl -- Do not set -fstrength-reduce if we have GCC 2.
-If -fstrength-reduce (or any other -f option) is a major win, then it
-will most likely be turned on by -O2 optimization.
-
-mit/config/sunLib.rules -- If HasGcc and GccVersion > 1 are true, then
-use gcc -fpic to generate PIC code. Make sure that gcc does not use
-gas (the GNU assembler) when compiling PIC code; gas does not assemble
-it correctly.
-
-***If you have gas installed where gcc uses it by default, you might have
-to add -B/bin/ to the PositionIndependentCFlags.***
-
-mit/config/site.def -- Define GccVersion to be 2.
-
-mit/config/sun.cf -- When compiling with GCC 2, use -O2 optimization.
-
-mit/config/sunLib.rules -- When compiling with GCC 2, use -fpic for
-position independent code generation.
-
-mit/rgb/Imakefile -- No longer need to compile some modules with
-cc on the Sparc since GCC 2 produces proper -fpcc-struct-return code.
-
-mit/server/os/Imakefile -- Likewise.
-
-mit/server/ddx/sun/Imakefile -- When compiling with GCC 2, some modules
-should be compiled with -fvolatile.
-
-mit/clients/twm/Imakefile -- Fix bad decls of malloc, realloc in gram.c.
-
-mit/lib/X/Imakefile -- Make libgcc.a a required lib for libX11.so
-
-*** mit/clients/twm/Imakefile Mon May 17 22:05:22 1993
---- new/clients/twm/Imakefile Mon May 17 22:28:46 1993
-***************
-*** 32,41 ****
---- 32,48 ----
- ComplexProgramTarget(twm)
- InstallNonExecFile(system.twmrc,$(TWMDIR))
-
-+ #if HasGcc && GccVersion > 1 && defined (SunArchitecture)
- gram.h gram.c: gram.y
- yacc $(YFLAGS) gram.y
-+ sed -e 's/^extern char \*malloc(), \*realloc();//g' y.tab.c >gram.c
-+ $(MV) y.tab.h gram.h
-+ #else
-+ gram.h gram.c: gram.y
-+ yacc $(YFLAGS) gram.y
- $(MV) y.tab.c gram.c
- $(MV) y.tab.h gram.h
-+ #endif
-
- clean::
- $(RM) y.tab.h y.tab.c lex.yy.c gram.h gram.c lex.c deftwmrc.c
-*** mit/config/Imake.tmpl Mon May 17 22:02:57 1993
---- new/config/Imake.tmpl Mon May 17 22:15:06 1993
-***************
-*** 500,506 ****
---- 500,510 ----
- #endif
- #ifndef CcCmd
- #if HasGcc
-+ #if GccVersion > 1
-+ #define CcCmd gcc -fpcc-struct-return
-+ #else
- #define CcCmd gcc -fstrength-reduce -fpcc-struct-return
-+ #endif
- #else
- #define CcCmd cc
- #endif
-*** mit/config/site.def Mon May 17 22:02:44 1993
---- new/config/site.def Mon May 17 22:22:28 1993
-***************
-*** 25,31 ****
-
- #ifdef BeforeVendorCF
-
-! /* #define HasGcc YES */
-
- #endif /* BeforeVendorCF */
-
---- 25,33 ----
-
- #ifdef BeforeVendorCF
-
-! #define HasGcc YES
-! /* GccVersion > 1 implies building shared libraries with gcc */
-! #define GccVersion 2
-
- #endif /* BeforeVendorCF */
-
-*** mit/config/sun.cf Mon May 17 22:03:02 1993
---- new/config/sun.cf Mon May 17 22:24:55 1993
-***************
-*** 41,49 ****
---- 41,55 ----
-
- #if HasGcc
-
-+ #if GccVersion > 1
-+ #define OptimizedCDebugFlags -O2
-+ #else
-+ #define OptimizedCDebugFlags -O
- #define SharedLibraryCcCmd cc
- #define ExtraLoadFlags -B/usr/bin/
- #define AllocateLocalDefines /**/
-+ #endif
-+
-
- .c.o:
- $(CC) -c $(CFLAGS) $*.c
-*** mit/config/sunLib.rules Mon May 17 22:02:46 1993
---- new/config/sunLib.rules Mon May 17 22:19:06 1993
-***************
-*** 23,29 ****
---- 23,33 ----
- #define SharedLibraryLoadFlags -assert pure-text
- #endif
- #ifndef PositionIndependentCFlags
-+ #if defined(HasGcc) && GccVersion > 1
-+ #define PositionIndependentCFlags -fpic
-+ #else
- #define PositionIndependentCFlags -pic
-+ #endif
- #endif
-
- /*
-*** mit/lib/X/Imakefile Mon May 17 22:05:03 1993
---- new/lib/X/Imakefile Mon May 17 22:32:26 1993
-***************
-*** 9,14 ****
---- 9,31 ----
- #define MotifBC NO
- #endif
-
-+ #if defined(SunArchitecture)
-+ #if SystemV4
-+ #if HasGcc
-+ REQUIREDLIBS= -lgcc -lc
-+ #else
-+ REQUIREDLIBS= -lc
-+ #endif
-+ #else
-+ #if HasGcc && GccVersion > 1
-+ XCOMM Hack to fix gcc 2 ``-nostdlib'' deficiency on SunOS 4.x
-+ REQUIREDLIBS= `gcc -v 2>&1 | awk '{print $$4}' | sed -e 's/specs$$/libgcc.a/'`
-+ #else
-+ REQUIREDLIBS=
-+ #endif
-+ #endif
-+ #endif
-+
- #ifndef BuildXimp
- #define BuildXimp NO
- #endif
-*** mit/rgb/Imakefile Mon May 17 22:05:31 1993
---- new/rgb/Imakefile Mon May 17 22:25:30 1993
-***************
-*** 17,23 ****
- #if !(defined(SGIArchitecture) || SystemV4)
- DBMLIB = -ldbm
- #endif
-! #if defined(SparcArchitecture) && HasGcc
- CC = cc
- CCOPTIONS = /**/
- EXTRA_LOAD_FLAGS = /**/
---- 17,23 ----
- #if !(defined(SGIArchitecture) || SystemV4)
- DBMLIB = -ldbm
- #endif
-! #if defined(SparcArchitecture) && HasGcc && GccVersion <= 1
- CC = cc
- CCOPTIONS = /**/
- EXTRA_LOAD_FLAGS = /**/
-*** mit/server/ddx/sun/Imakefile Mon May 17 22:05:57 1993
---- new/server/ddx/sun/Imakefile Mon May 17 22:27:23 1993
-***************
-*** 43,48 ****
---- 43,53 ----
- LinkFile(sunGX.o,sunGX.o.dist)
- #endif
-
-+ #if HasGcc && GccVersion > 1
-+ SpecialObjectRule(sunCG2C.o,sunCG2C.c,-fvolatile)
-+ SpecialObjectRule(sunCG2M.o,sunCG2M.c,-fvolatile)
-+ #endif
-+
- sunInitExtMono.o: $(ICONFIGFILES)
- ObjectFromSpecialSource(sunInitExtMono,../mi/miinitext,-UPEXEXT)
- ObjectFromSpecialSource(sunInitMono,sunInit,-DMONO_ONLY)
-*** mit/server/os/Imakefile Mon May 17 22:05:46 1993
---- new/server/os/Imakefile Mon May 17 22:26:02 1993
-***************
-*** 132,138 ****
- SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
- SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
- SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
-! #if defined(SparcArchitecture) && HasGcc
- oscolor.o: $(ICONFIGFILES)
- $(RM) $@
- cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
---- 132,138 ----
- SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
- SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
- SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
-! #if defined(SparcArchitecture) && HasGcc && GccVersion <= 1
- oscolor.o: $(ICONFIGFILES)
- $(RM) $@
- cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
-
-\f
-[This is the older version]
-
-How to compile X11R5 (patch level 11) with GCC version 2:
-
-The patches include support for building the shared libraries with GCC 2 on
-the Sparc and 68k machines.
-
-NOTE: Such shared libraries built with GCC version 2.3 DID NOT WORK
-with executables previously linked using Sun CC! This is because
-neither those executables nor the gcc-compiled shared libraries contain
-libgcc.a. The shared libraries did work with executables linked using
-GCC (running the Sun linker, of course) because GCC tells the linker to
-link in libgcc.a. Because of these limitations the default behavior is
-to NOT build the shared libraries with gcc.
-
-Changes in GCC 2.4 seem to have eliminated the problem, and such a
-shared library now seems work with all executables. If you want the
-gcc-compiled shared libraries turn on "Gcc2BuildLibs" in site.def. If
-you try this, please tell bug-gcc@prep.ai.mit.edu whether it works.
-
-Sun forgot to include a static version of libdl.a with some versions
-of SunOS (4.1 mainly). If you see undefined symbols _dlopen, _dlsym,
-or _dlclose when linking with -lX11, compile and link against the file
-mit/util/misc/dlsym.c in the MIT X11R5 distribution.
-
-mit/config/Imake.tmpl -- Do not set -fstrength-reduce if we have GCC 2. If
--fstrength-reduce (or any other -f option) is a major win, then it will
-most likely be turned on by -O2 optimization.
-
-mit/config/sunLib.rules -- If HasGcc2 and Gcc2BuildLibs are defined, then
-use gcc -fpic to generate PIC code. Make sure that gcc does not use gas (the
-GNU assembler) when compiling PIC code; gas does not assemble it correctly.
-If you have gas installed where gcc uses it by default, you might have to add
--B/bin/ to the PositionIndependentCFlags.
-
-mit/config/site.def -- Define HasGcc2 to be YES.
-
-mit/config/sun.cf -- When compiling with GCC 2, use -O2 optimization.
-
-mit/rgb/Imakefile -- No longer need to compile some modules with
-cc on the Sparc since GCC 2 produces proper -fpcc-struct-return code.
-
-mit/server/os/Imakefile -- Likewise.
-
-mit/clients/twm/Imakefile -- fix bad decls of malloc, realloc in gram.c.
-
-*** mit/config/Imake.tmpl.ORIG Tue Dec 31 11:07:56 1991
---- mit/config/Imake.tmpl Tue Dec 31 12:30:47 1991
-***************
-*** 499,508 ****
---- 499,512 ----
- #define HasGcc NO
- #endif
- #ifndef CcCmd
-+ #if HasGcc2
-+ #define CcCmd gcc -fpcc-struct-return
-+ #else
- #if HasGcc
- #define CcCmd gcc -fstrength-reduce -fpcc-struct-return
- #else
- #define CcCmd cc
-+ #endif
- #endif
- #endif
- #if HasFortran
-*** mit/config/sunLib.rules.ORIG Tue Dec 31 11:11:24 1991
---- mit/config/sunLib.rules Tue May 5 12:26:12 1992
-***************
-*** 23,30 ****
---- 23,34 ----
- #define SharedLibraryLoadFlags -assert pure-text
- #endif
- #ifndef PositionIndependentCFlags
-+ #if defined(HasGcc2) && defined (Gcc2BuildLibs)
-+ #define PositionIndependentCFlags -fpic
-+ #else
- #define PositionIndependentCFlags -pic
- #endif
-+ #endif
-
- /*
- * InstallSharedLibrary - generate rules to install the shared library.
-*** mit/config/site.def.ORIG Tue Dec 31 11:13:49 1991
---- mit/config/site.def Tue Dec 31 12:02:59 1991
-***************
-*** 25,31 ****
-
- #ifdef BeforeVendorCF
-
-! /* #define HasGcc YES */
-
- #endif /* BeforeVendorCF */
-
---- 25,33 ----
-
- #ifdef BeforeVendorCF
-
-! #define HasGcc YES
-! #define HasGcc2 YES
-! /* #define Gcc2BuildLibs YES */
-
- #endif /* BeforeVendorCF */
-
-*** mit/config/sun.cf.ORIG Tue Dec 31 11:13:57 1991
---- mit/config/sun.cf Tue May 5 12:29:50 1992
-***************
-*** 34,42 ****
---- 41,61 ----
-
- #if HasGcc
-
-+ #if defined(HasGcc2)
-+ #define OptimizedCDebugFlags -O2
-+ /* Leave Alone XXX */
-+ #else
-+ #define OptimizedCDebugFlags -O
- #define SharedLibraryCcCmd cc
- #define ExtraLoadFlags -B/usr/bin/
- #define AllocateLocalDefines /**/
-+ #endif
-+
-+ #if !defined(Gcc2BuildLibs)
-+ #define SharedLibraryCcCmd cc
-+ #define ExtraLoadFlags -B/usr/bin/
-+ #define AllocateLocalDefines /**/
-+ #endif
-
- .c.o:
- $(CC) -c $(CFLAGS) $*.c
-*** mit/rgb/Imakefile.ORIG Wed Jan 15 16:43:18 1992
---- mit/rgb/Imakefile Thu Jan 2 13:34:09 1992
-***************
-*** 17,23 ****
- #if !(defined(SGIArchitecture) || SystemV4)
- DBMLIB = -ldbm
- #endif
-! #if defined(SparcArchitecture) && HasGcc
- CC = cc
- CCOPTIONS = /**/
- EXTRA_LOAD_FLAGS = /**/
---- 17,23 ----
- #if !(defined(SGIArchitecture) || SystemV4)
- DBMLIB = -ldbm
- #endif
-! #if defined(SparcArchitecture) && HasGcc && !defined(HasGcc2)
- CC = cc
- CCOPTIONS = /**/
- EXTRA_LOAD_FLAGS = /**/
-*** mit/server/os/Imakefile.ORIG Wed Jan 15 16:46:23 1992
---- mit/server/os/Imakefile Wed Jan 15 16:46:48 1992
-***************
-*** 132,138 ****
- SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
- SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
- SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
-! #if defined(SparcArchitecture) && HasGcc
- oscolor.o: $(ICONFIGFILES)
- $(RM) $@
- cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
---- 132,138 ----
- SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
- SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
- SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
-! #if defined(SparcArchitecture) && HasGcc && !defined(HasGcc2)
- oscolor.o: $(ICONFIGFILES)
- $(RM) $@
- cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
-*** 1.1 1992/09/08 19:52:07
---- mit/server/ddx/sun/Imakefile 1992/09/08 21:10:22
-***************
-*** 43,48 ****
---- 43,53 ----
- LinkFile(sunGX.o,sunGX.o.dist)
- #endif
-
-+ #if HasGcc2
-+ SpecialObjectRule(sunCG2C.o,sunCG2C.c,-fvolatile)
-+ SpecialObjectRule(sunCG2M.o,sunCG2M.c,-fvolatile)
-+ #endif
-+
- sunInitExtMono.o: $(ICONFIGFILES)
- ObjectFromSpecialSource(sunInitExtMono,../mi/miinitext,-UPEXEXT)
- ObjectFromSpecialSource(sunInitMono,sunInit,-DMONO_ONLY)
-
-*** /tmp/RCSAa24446 Tue Sep 15 12:23:32 1992
---- mit/clients/twm/Imakefile Thu Aug 13 18:18:07 1992
-***************
-*** 32,41 ****
---- 32,48 ----
- ComplexProgramTarget(twm)
- InstallNonExecFile(system.twmrc,$(TWMDIR))
-
-+ #if HasGcc2 && defined (SunArchitecture)
- gram.h gram.c: gram.y
- yacc $(YFLAGS) gram.y
-+ sed -e 's/^extern char \*malloc(), \*realloc();//g' y.tab.c >gram.c
-+ $(MV) y.tab.h gram.h
-+ #else
-+ gram.h gram.c: gram.y
-+ yacc $(YFLAGS) gram.y
- $(MV) y.tab.c gram.c
- $(MV) y.tab.h gram.h
-+ #endif
-
- clean::
- $(RM) y.tab.h y.tab.c lex.yy.c gram.h gram.c lex.c deftwmrc.c
-
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