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1.1 root 1: [This file contains two alternative recipes for compiling X11 with GCC.
2: The first alternative puts libgcc.a into the shared X library; the second
3: does not. Neither alternative works on all kinds of systems.
4: It may be that when using GCC 2.4, both alternatives work okay on
5: relatively recent Sparc systems. The first alternative is likely
6: not to work on a Sun 3 without hardware floating point.]
7:
8: How to compile X11R5 (patch level 11) with GCC version 2:
9:
10: The patches include support for building the shared libraries with GCC
11: 2 on the Sparc and 68k machines. This version includes the necessary
12: parts of libgcc.a in the shared library for X, in case functions in
13: that library need it. Thus the default behavior is now to build
14: everything, including the libraries, with gcc.
15:
16: If you build the shared library this way, it may not work with
17: executables made with older versions of GCC (2.3.3 and earlier).
18: If that happens, relink those executables with the latest GCC.
19: IF YOU THINK YOU MIGHT COMPILE X FOR SOLARIS 2, then you really don't
20: need this patch: get /contrib/R5.SunOS5.patch.tar.Z from
21: export.lcs.mit.edu instead. It has everything you need to do the
22: build for Solaris 2, sets you up to everything with GCC, and is
23: backward compatible with Sunos 4.*. Get the the README
24: (/contrib/R5.SunOS5.patch.README at export) for more info.
25:
26: If you see undefined symbols _dlopen, _dlsym, or _dlclose when linking
27: with -lX11, compile and link against the file mit/util/misc/dlsym.c in
28: the MIT X11R5 distribution. Alternatively, do dynamic linking
29: by using a non-GNU ld.
30:
31: mit/config/Imake.tmpl -- Do not set -fstrength-reduce if we have GCC 2.
32: If -fstrength-reduce (or any other -f option) is a major win, then it
33: will most likely be turned on by -O2 optimization.
34:
35: mit/config/sunLib.rules -- If HasGcc and GccVersion > 1 are true, then
36: use gcc -fpic to generate PIC code. Make sure that gcc does not use
37: gas (the GNU assembler) when compiling PIC code; gas does not assemble
38: it correctly.
39:
40: ***If you have gas installed where gcc uses it by default, you might have
41: to add -B/bin/ to the PositionIndependentCFlags.***
42:
43: mit/config/site.def -- Define GccVersion to be 2.
44:
45: mit/config/sun.cf -- When compiling with GCC 2, use -O2 optimization.
46:
47: mit/config/sunLib.rules -- When compiling with GCC 2, use -fpic for
48: position independent code generation.
49:
50: mit/rgb/Imakefile -- No longer need to compile some modules with
51: cc on the Sparc since GCC 2 produces proper -fpcc-struct-return code.
52:
53: mit/server/os/Imakefile -- Likewise.
54:
55: mit/server/ddx/sun/Imakefile -- When compiling with GCC 2, some modules
56: should be compiled with -fvolatile.
57:
58: mit/clients/twm/Imakefile -- Fix bad decls of malloc, realloc in gram.c.
59:
60: mit/lib/X/Imakefile -- Make libgcc.a a required lib for libX11.so
61:
62: *** mit/clients/twm/Imakefile Mon May 17 22:05:22 1993
63: --- new/clients/twm/Imakefile Mon May 17 22:28:46 1993
64: ***************
65: *** 32,41 ****
66: --- 32,48 ----
67: ComplexProgramTarget(twm)
68: InstallNonExecFile(system.twmrc,$(TWMDIR))
69:
70: + #if HasGcc && GccVersion > 1 && defined (SunArchitecture)
71: gram.h gram.c: gram.y
72: yacc $(YFLAGS) gram.y
73: + sed -e 's/^extern char \*malloc(), \*realloc();//g' y.tab.c >gram.c
74: + $(MV) y.tab.h gram.h
75: + #else
76: + gram.h gram.c: gram.y
77: + yacc $(YFLAGS) gram.y
78: $(MV) y.tab.c gram.c
79: $(MV) y.tab.h gram.h
80: + #endif
81:
82: clean::
83: $(RM) y.tab.h y.tab.c lex.yy.c gram.h gram.c lex.c deftwmrc.c
84: *** mit/config/Imake.tmpl Mon May 17 22:02:57 1993
85: --- new/config/Imake.tmpl Mon May 17 22:15:06 1993
86: ***************
87: *** 500,506 ****
88: --- 500,510 ----
89: #endif
90: #ifndef CcCmd
91: #if HasGcc
92: + #if GccVersion > 1
93: + #define CcCmd gcc -fpcc-struct-return
94: + #else
95: #define CcCmd gcc -fstrength-reduce -fpcc-struct-return
96: + #endif
97: #else
98: #define CcCmd cc
99: #endif
100: *** mit/config/site.def Mon May 17 22:02:44 1993
101: --- new/config/site.def Mon May 17 22:22:28 1993
102: ***************
103: *** 25,31 ****
104:
105: #ifdef BeforeVendorCF
106:
107: ! /* #define HasGcc YES */
108:
109: #endif /* BeforeVendorCF */
110:
111: --- 25,33 ----
112:
113: #ifdef BeforeVendorCF
114:
115: ! #define HasGcc YES
116: ! /* GccVersion > 1 implies building shared libraries with gcc */
117: ! #define GccVersion 2
118:
119: #endif /* BeforeVendorCF */
120:
121: *** mit/config/sun.cf Mon May 17 22:03:02 1993
122: --- new/config/sun.cf Mon May 17 22:24:55 1993
123: ***************
124: *** 41,49 ****
125: --- 41,55 ----
126:
127: #if HasGcc
128:
129: + #if GccVersion > 1
130: + #define OptimizedCDebugFlags -O2
131: + #else
132: + #define OptimizedCDebugFlags -O
133: #define SharedLibraryCcCmd cc
134: #define ExtraLoadFlags -B/usr/bin/
135: #define AllocateLocalDefines /**/
136: + #endif
137: +
138:
139: .c.o:
140: $(CC) -c $(CFLAGS) $*.c
141: *** mit/config/sunLib.rules Mon May 17 22:02:46 1993
142: --- new/config/sunLib.rules Mon May 17 22:19:06 1993
143: ***************
144: *** 23,29 ****
145: --- 23,33 ----
146: #define SharedLibraryLoadFlags -assert pure-text
147: #endif
148: #ifndef PositionIndependentCFlags
149: + #if defined(HasGcc) && GccVersion > 1
150: + #define PositionIndependentCFlags -fpic
151: + #else
152: #define PositionIndependentCFlags -pic
153: + #endif
154: #endif
155:
156: /*
157: *** mit/lib/X/Imakefile Mon May 17 22:05:03 1993
158: --- new/lib/X/Imakefile Mon May 17 22:32:26 1993
159: ***************
160: *** 9,14 ****
161: --- 9,31 ----
162: #define MotifBC NO
163: #endif
164:
165: + #if defined(SunArchitecture)
166: + #if SystemV4
167: + #if HasGcc
168: + REQUIREDLIBS= -lgcc -lc
169: + #else
170: + REQUIREDLIBS= -lc
171: + #endif
172: + #else
173: + #if HasGcc && GccVersion > 1
174: + XCOMM Hack to fix gcc 2 ``-nostdlib'' deficiency on SunOS 4.x
175: + REQUIREDLIBS= `gcc -v 2>&1 | awk '{print $$4}' | sed -e 's/specs$$/libgcc.a/'`
176: + #else
177: + REQUIREDLIBS=
178: + #endif
179: + #endif
180: + #endif
181: +
182: #ifndef BuildXimp
183: #define BuildXimp NO
184: #endif
185: *** mit/rgb/Imakefile Mon May 17 22:05:31 1993
186: --- new/rgb/Imakefile Mon May 17 22:25:30 1993
187: ***************
188: *** 17,23 ****
189: #if !(defined(SGIArchitecture) || SystemV4)
190: DBMLIB = -ldbm
191: #endif
192: ! #if defined(SparcArchitecture) && HasGcc
193: CC = cc
194: CCOPTIONS = /**/
195: EXTRA_LOAD_FLAGS = /**/
196: --- 17,23 ----
197: #if !(defined(SGIArchitecture) || SystemV4)
198: DBMLIB = -ldbm
199: #endif
200: ! #if defined(SparcArchitecture) && HasGcc && GccVersion <= 1
201: CC = cc
202: CCOPTIONS = /**/
203: EXTRA_LOAD_FLAGS = /**/
204: *** mit/server/ddx/sun/Imakefile Mon May 17 22:05:57 1993
205: --- new/server/ddx/sun/Imakefile Mon May 17 22:27:23 1993
206: ***************
207: *** 43,48 ****
208: --- 43,53 ----
209: LinkFile(sunGX.o,sunGX.o.dist)
210: #endif
211:
212: + #if HasGcc && GccVersion > 1
213: + SpecialObjectRule(sunCG2C.o,sunCG2C.c,-fvolatile)
214: + SpecialObjectRule(sunCG2M.o,sunCG2M.c,-fvolatile)
215: + #endif
216: +
217: sunInitExtMono.o: $(ICONFIGFILES)
218: ObjectFromSpecialSource(sunInitExtMono,../mi/miinitext,-UPEXEXT)
219: ObjectFromSpecialSource(sunInitMono,sunInit,-DMONO_ONLY)
220: *** mit/server/os/Imakefile Mon May 17 22:05:46 1993
221: --- new/server/os/Imakefile Mon May 17 22:26:02 1993
222: ***************
223: *** 132,138 ****
224: SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
225: SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
226: SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
227: ! #if defined(SparcArchitecture) && HasGcc
228: oscolor.o: $(ICONFIGFILES)
229: $(RM) $@
230: cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
231: --- 132,138 ----
232: SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
233: SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
234: SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
235: ! #if defined(SparcArchitecture) && HasGcc && GccVersion <= 1
236: oscolor.o: $(ICONFIGFILES)
237: $(RM) $@
238: cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
239:
240:
241: [This is the older version]
242:
243: How to compile X11R5 (patch level 11) with GCC version 2:
244:
245: The patches include support for building the shared libraries with GCC 2 on
246: the Sparc and 68k machines.
247:
248: NOTE: Such shared libraries built with GCC version 2.3 DID NOT WORK
249: with executables previously linked using Sun CC! This is because
250: neither those executables nor the gcc-compiled shared libraries contain
251: libgcc.a. The shared libraries did work with executables linked using
252: GCC (running the Sun linker, of course) because GCC tells the linker to
253: link in libgcc.a. Because of these limitations the default behavior is
254: to NOT build the shared libraries with gcc.
255:
256: Changes in GCC 2.4 seem to have eliminated the problem, and such a
257: shared library now seems work with all executables. If you want the
258: gcc-compiled shared libraries turn on "Gcc2BuildLibs" in site.def. If
259: you try this, please tell [email protected] whether it works.
260:
261: Sun forgot to include a static version of libdl.a with some versions
262: of SunOS (4.1 mainly). If you see undefined symbols _dlopen, _dlsym,
263: or _dlclose when linking with -lX11, compile and link against the file
264: mit/util/misc/dlsym.c in the MIT X11R5 distribution.
265:
266: mit/config/Imake.tmpl -- Do not set -fstrength-reduce if we have GCC 2. If
267: -fstrength-reduce (or any other -f option) is a major win, then it will
268: most likely be turned on by -O2 optimization.
269:
270: mit/config/sunLib.rules -- If HasGcc2 and Gcc2BuildLibs are defined, then
271: use gcc -fpic to generate PIC code. Make sure that gcc does not use gas (the
272: GNU assembler) when compiling PIC code; gas does not assemble it correctly.
273: If you have gas installed where gcc uses it by default, you might have to add
274: -B/bin/ to the PositionIndependentCFlags.
275:
276: mit/config/site.def -- Define HasGcc2 to be YES.
277:
278: mit/config/sun.cf -- When compiling with GCC 2, use -O2 optimization.
279:
280: mit/rgb/Imakefile -- No longer need to compile some modules with
281: cc on the Sparc since GCC 2 produces proper -fpcc-struct-return code.
282:
283: mit/server/os/Imakefile -- Likewise.
284:
285: mit/clients/twm/Imakefile -- fix bad decls of malloc, realloc in gram.c.
286:
287: *** mit/config/Imake.tmpl.ORIG Tue Dec 31 11:07:56 1991
288: --- mit/config/Imake.tmpl Tue Dec 31 12:30:47 1991
289: ***************
290: *** 499,508 ****
291: --- 499,512 ----
292: #define HasGcc NO
293: #endif
294: #ifndef CcCmd
295: + #if HasGcc2
296: + #define CcCmd gcc -fpcc-struct-return
297: + #else
298: #if HasGcc
299: #define CcCmd gcc -fstrength-reduce -fpcc-struct-return
300: #else
301: #define CcCmd cc
302: + #endif
303: #endif
304: #endif
305: #if HasFortran
306: *** mit/config/sunLib.rules.ORIG Tue Dec 31 11:11:24 1991
307: --- mit/config/sunLib.rules Tue May 5 12:26:12 1992
308: ***************
309: *** 23,30 ****
310: --- 23,34 ----
311: #define SharedLibraryLoadFlags -assert pure-text
312: #endif
313: #ifndef PositionIndependentCFlags
314: + #if defined(HasGcc2) && defined (Gcc2BuildLibs)
315: + #define PositionIndependentCFlags -fpic
316: + #else
317: #define PositionIndependentCFlags -pic
318: #endif
319: + #endif
320:
321: /*
322: * InstallSharedLibrary - generate rules to install the shared library.
323: *** mit/config/site.def.ORIG Tue Dec 31 11:13:49 1991
324: --- mit/config/site.def Tue Dec 31 12:02:59 1991
325: ***************
326: *** 25,31 ****
327:
328: #ifdef BeforeVendorCF
329:
330: ! /* #define HasGcc YES */
331:
332: #endif /* BeforeVendorCF */
333:
334: --- 25,33 ----
335:
336: #ifdef BeforeVendorCF
337:
338: ! #define HasGcc YES
339: ! #define HasGcc2 YES
340: ! /* #define Gcc2BuildLibs YES */
341:
342: #endif /* BeforeVendorCF */
343:
344: *** mit/config/sun.cf.ORIG Tue Dec 31 11:13:57 1991
345: --- mit/config/sun.cf Tue May 5 12:29:50 1992
346: ***************
347: *** 34,42 ****
348: --- 41,61 ----
349:
350: #if HasGcc
351:
352: + #if defined(HasGcc2)
353: + #define OptimizedCDebugFlags -O2
354: + /* Leave Alone XXX */
355: + #else
356: + #define OptimizedCDebugFlags -O
357: #define SharedLibraryCcCmd cc
358: #define ExtraLoadFlags -B/usr/bin/
359: #define AllocateLocalDefines /**/
360: + #endif
361: +
362: + #if !defined(Gcc2BuildLibs)
363: + #define SharedLibraryCcCmd cc
364: + #define ExtraLoadFlags -B/usr/bin/
365: + #define AllocateLocalDefines /**/
366: + #endif
367:
368: .c.o:
369: $(CC) -c $(CFLAGS) $*.c
370: *** mit/rgb/Imakefile.ORIG Wed Jan 15 16:43:18 1992
371: --- mit/rgb/Imakefile Thu Jan 2 13:34:09 1992
372: ***************
373: *** 17,23 ****
374: #if !(defined(SGIArchitecture) || SystemV4)
375: DBMLIB = -ldbm
376: #endif
377: ! #if defined(SparcArchitecture) && HasGcc
378: CC = cc
379: CCOPTIONS = /**/
380: EXTRA_LOAD_FLAGS = /**/
381: --- 17,23 ----
382: #if !(defined(SGIArchitecture) || SystemV4)
383: DBMLIB = -ldbm
384: #endif
385: ! #if defined(SparcArchitecture) && HasGcc && !defined(HasGcc2)
386: CC = cc
387: CCOPTIONS = /**/
388: EXTRA_LOAD_FLAGS = /**/
389: *** mit/server/os/Imakefile.ORIG Wed Jan 15 16:46:23 1992
390: --- mit/server/os/Imakefile Wed Jan 15 16:46:48 1992
391: ***************
392: *** 132,138 ****
393: SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
394: SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
395: SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
396: ! #if defined(SparcArchitecture) && HasGcc
397: oscolor.o: $(ICONFIGFILES)
398: $(RM) $@
399: cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
400: --- 132,138 ----
401: SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
402: SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
403: SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
404: ! #if defined(SparcArchitecture) && HasGcc && !defined(HasGcc2)
405: oscolor.o: $(ICONFIGFILES)
406: $(RM) $@
407: cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
408: *** 1.1 1992/09/08 19:52:07
409: --- mit/server/ddx/sun/Imakefile 1992/09/08 21:10:22
410: ***************
411: *** 43,48 ****
412: --- 43,53 ----
413: LinkFile(sunGX.o,sunGX.o.dist)
414: #endif
415:
416: + #if HasGcc2
417: + SpecialObjectRule(sunCG2C.o,sunCG2C.c,-fvolatile)
418: + SpecialObjectRule(sunCG2M.o,sunCG2M.c,-fvolatile)
419: + #endif
420: +
421: sunInitExtMono.o: $(ICONFIGFILES)
422: ObjectFromSpecialSource(sunInitExtMono,../mi/miinitext,-UPEXEXT)
423: ObjectFromSpecialSource(sunInitMono,sunInit,-DMONO_ONLY)
424:
425: *** /tmp/RCSAa24446 Tue Sep 15 12:23:32 1992
426: --- mit/clients/twm/Imakefile Thu Aug 13 18:18:07 1992
427: ***************
428: *** 32,41 ****
429: --- 32,48 ----
430: ComplexProgramTarget(twm)
431: InstallNonExecFile(system.twmrc,$(TWMDIR))
432:
433: + #if HasGcc2 && defined (SunArchitecture)
434: gram.h gram.c: gram.y
435: yacc $(YFLAGS) gram.y
436: + sed -e 's/^extern char \*malloc(), \*realloc();//g' y.tab.c >gram.c
437: + $(MV) y.tab.h gram.h
438: + #else
439: + gram.h gram.c: gram.y
440: + yacc $(YFLAGS) gram.y
441: $(MV) y.tab.c gram.c
442: $(MV) y.tab.h gram.h
443: + #endif
444:
445: clean::
446: $(RM) y.tab.h y.tab.c lex.yy.c gram.h gram.c lex.c deftwmrc.c
447:
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