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