| [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 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 |
| |
| |
| [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 |
| |
