162 lines
5.1 KiB
Plaintext
162 lines
5.1 KiB
Plaintext
How to compile X11R5 (patch level 11) with GCC version 2:
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The patches include support for building the shared libraries with GCC 2 on
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the Sparc and 68k machines. NOTE: Such shared libraries DO NOT WORK
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with executables previously linked using Sun CC! This is because
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neither those executables nor the gcc-compiled shared libraries contain
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libgcc.a. The shared libraries do work with executables linked using
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GCC (running the Sun linker, of course) because GCC tells the linker to
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link in libgcc.a. Because of these limitations the default behavior is
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to NOT build the shared libraries with gcc. If you want the gcc-compiled
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shared libraries turn on "Gcc2BuildLibs" in site.def
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If you want to build a shared library that works with executables
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linked with Sun CC, you will have to arrange to include libgcc.a in
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the shared libraries. The instructions below do not handle this.
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Sun forgot to include a static version of libdl.a with some versions
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of SunOS (4.1 mainly). If you see undefined symbols _dlopen, _dlsym,
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or _dlclose when linking with -lX11, compile and link against the file
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mit/util/misc/dlsym.c in the MIT X11R5 distribution.
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mit/config/Imake.tmpl -- Do not set -fstrength-reduce if we have GCC 2. If
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-fstrength-reduce (or any other -f option) is a major win, then it will
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most likely be turned on by -O2 optimization.
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mit/config/sunLib.rules -- If HasGcc2 and Gcc2BuildLibs are defined, then
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use gcc -fpic to generate PIC code. Make sure that gcc does not use gas (the
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GNU assembler) when compiling PIC code; gas does not assemble it correctly.
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If you have gas installed where gcc uses it by default, you might have to add
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-B/bin/ to the PositionIndependentCFlags.
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mit/config/site.def -- Define HasGcc2 to be YES.
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mit/config/sun.cf -- When compiling with GCC 2, use -O2 optimization.
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mit/rgb/Imakefile -- No longer need to compile some modules with
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cc on the Sparc since GCC 2 produces proper -fpcc-struct-return code.
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mit/server/os/Imakefile -- Likewise.
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*** mit/config/Imake.tmpl.ORIG Tue Dec 31 11:07:56 1991
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--- mit/config/Imake.tmpl Tue Dec 31 12:30:47 1991
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***************
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*** 499,508 ****
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--- 499,512 ----
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#define HasGcc NO
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#endif
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#ifndef CcCmd
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+ #if HasGcc2
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+ #define CcCmd gcc -fpcc-struct-return
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+ #else
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#if HasGcc
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#define CcCmd gcc -fstrength-reduce -fpcc-struct-return
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#else
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#define CcCmd cc
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+ #endif
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#endif
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#endif
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#if HasFortran
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*** mit/config/sunLib.rules.ORIG Tue Dec 31 11:11:24 1991
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--- mit/config/sunLib.rules Tue May 5 12:26:12 1992
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***************
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*** 23,30 ****
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--- 23,34 ----
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#define SharedLibraryLoadFlags -assert pure-text
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#endif
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#ifndef PositionIndependentCFlags
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+ #if defined(HasGcc2) && defined (Gcc2BuildLibs)
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+ #define PositionIndependentCFlags -fpic
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+ #else
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#define PositionIndependentCFlags -pic
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#endif
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+ #endif
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/*
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* InstallSharedLibrary - generate rules to install the shared library.
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*** mit/config/site.def.ORIG Tue Dec 31 11:13:49 1991
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--- mit/config/site.def Tue Dec 31 12:02:59 1991
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***************
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*** 25,31 ****
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#ifdef BeforeVendorCF
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! /* #define HasGcc YES */
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#endif /* BeforeVendorCF */
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--- 25,33 ----
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#ifdef BeforeVendorCF
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! #define HasGcc YES
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! #define HasGcc2 YES
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! /* #define Gcc2BuildLibs YES */
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#endif /* BeforeVendorCF */
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*** mit/config/sun.cf.ORIG Tue Dec 31 11:13:57 1991
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--- mit/config/sun.cf Tue May 5 12:29:50 1992
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***************
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*** 34,42 ****
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--- 41,61 ----
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#if HasGcc
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+ #if defined(HasGcc2)
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+ #define OptimizedCDebugFlags -O2
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+ /* Leave Alone XXX */
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+ #else
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+ #define OptimizedCDebugFlags -O
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#define SharedLibraryCcCmd cc
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#define ExtraLoadFlags -B/usr/bin/
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#define AllocateLocalDefines /**/
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+ #endif
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+
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+ #if !defined(Gcc2BuildLibs)
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+ #define SharedLibraryCcCmd cc
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+ #define ExtraLoadFlags -B/usr/bin/
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+ #define AllocateLocalDefines /**/
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+ #endif
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.c.o:
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$(CC) -c $(CFLAGS) $*.c
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*** mit/rgb/Imakefile.ORIG Wed Jan 15 16:43:18 1992
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--- mit/rgb/Imakefile Thu Jan 2 13:34:09 1992
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***************
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*** 17,23 ****
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#if !(defined(SGIArchitecture) || SystemV4)
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DBMLIB = -ldbm
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#endif
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! #if defined(SparcArchitecture) && HasGcc
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CC = cc
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CCOPTIONS = /**/
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EXTRA_LOAD_FLAGS = /**/
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--- 17,23 ----
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#if !(defined(SGIArchitecture) || SystemV4)
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DBMLIB = -ldbm
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#endif
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! #if defined(SparcArchitecture) && HasGcc && !defined(HasGcc2)
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CC = cc
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CCOPTIONS = /**/
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EXTRA_LOAD_FLAGS = /**/
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*** mit/server/os/Imakefile.ORIG Wed Jan 15 16:46:23 1992
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--- mit/server/os/Imakefile Wed Jan 15 16:46:48 1992
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***************
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*** 132,138 ****
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SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
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SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
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SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
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! #if defined(SparcArchitecture) && HasGcc
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oscolor.o: $(ICONFIGFILES)
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$(RM) $@
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cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
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--- 132,138 ----
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SpecialObjectRule(osinit.o,$(ICONFIGFILES),$(ADM_DEFINES))
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SpecialObjectRule(WaitFor.o,$(ICONFIGFILES),$(EXT_DEFINES))
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SpecialObjectRule(fonttype.o,$(ICONFIGFILES),$(FONT_DEFINES))
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! #if defined(SparcArchitecture) && HasGcc && !defined(HasGcc2)
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oscolor.o: $(ICONFIGFILES)
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$(RM) $@
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cc -c $(DBM_DEFINES) $(CDEBUGFLAGS) $(ALLDEFINES) $*.c
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