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1 dnl --------------------------------------------------------------------------- |
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2 dnl Message output |
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3 dnl --------------------------------------------------------------------------- |
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4 AC_DEFUN([LOC_MSG],[echo "$1"]) |
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5 |
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6 dnl --------------------------------------------------------------------------- |
|
7 dnl Available from the GNU Autoconf Macro Archive at: |
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8 dnl http://www.gnu.org/software/ac-archive/vl_prog_cc_warnings.html |
|
9 dnl --------------------------------------------------------------------------- |
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10 |
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11 dnl @synopsis VL_PROG_CC_WARNINGS([ANSI]) |
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12 dnl |
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13 dnl Enables a reasonable set of warnings for the C compiler. |
|
14 dnl Optionally, if the first argument is nonempty, turns on flags which |
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15 dnl enforce and/or enable proper ANSI C if such are known with the |
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16 dnl compiler used. |
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17 dnl |
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18 dnl Currently this macro knows about GCC, Solaris C compiler, Digital |
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19 dnl Unix C compiler, C for AIX Compiler, HP-UX C compiler, IRIX C |
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20 dnl compiler, NEC SX-5 (Super-UX 10) C compiler, and Cray J90 (Unicos |
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21 dnl 10.0.0.8) C compiler. |
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22 dnl |
|
23 dnl @category C |
|
24 dnl @author Ville Laurikari <vl@iki.fi> |
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25 dnl @version 2002-04-04 |
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26 dnl @license AllPermissive |
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27 |
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28 AC_DEFUN([VL_PROG_CC_WARNINGS], [ |
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29 ansi=$1 |
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30 if test -z "$ansi"; then |
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31 msg="for C compiler warning flags" |
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32 else |
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33 msg="for C compiler warning and ANSI conformance flags" |
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34 fi |
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35 AC_CACHE_CHECK($msg, vl_cv_prog_cc_warnings, [ |
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36 if test -n "$CC"; then |
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37 cat > conftest.c <<EOF |
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38 int main(int argc, char **argv) { return 0; } |
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39 EOF |
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40 |
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41 dnl GCC. -W option has been renamed in -wextra in latest gcc versions. |
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42 if test "$GCC" = "yes"; then |
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43 if test -z "$ansi"; then |
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44 vl_cv_prog_cc_warnings="-Wall -W" |
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45 else |
|
46 vl_cv_prog_cc_warnings="-Wall -W -ansi -pedantic" |
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47 fi |
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48 |
|
49 dnl Most compilers print some kind of a version string with some command |
|
50 dnl line options (often "-V"). The version string should be checked |
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51 dnl before doing a test compilation run with compiler-specific flags. |
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52 dnl This is because some compilers (like the Cray compiler) only |
|
53 dnl produce a warning message for unknown flags instead of returning |
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54 dnl an error, resulting in a false positive. Also, compilers may do |
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55 dnl erratic things when invoked with flags meant for a different |
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56 dnl compiler. |
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57 |
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58 dnl Solaris C compiler |
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59 elif $CC -V 2>&1 | grep -i "WorkShop" > /dev/null 2>&1 && |
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60 $CC -c -v -Xc conftest.c > /dev/null 2>&1 && |
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61 test -f conftest.o; then |
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62 if test -z "$ansi"; then |
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63 vl_cv_prog_cc_warnings="-v" |
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64 else |
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65 vl_cv_prog_cc_warnings="-v -Xc" |
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66 fi |
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67 |
|
68 dnl Digital Unix C compiler |
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69 elif $CC -V 2>&1 | grep -i "Digital UNIX Compiler" > /dev/null 2>&1 && |
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70 $CC -c -verbose -w0 -warnprotos -std1 conftest.c > /dev/null 2>&1 && |
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71 test -f conftest.o; then |
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72 if test -z "$ansi"; then |
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73 vl_cv_prog_cc_warnings="-verbose -w0 -warnprotos" |
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74 else |
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75 vl_cv_prog_cc_warnings="-verbose -w0 -warnprotos -std1" |
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76 fi |
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77 |
|
78 dnl C for AIX Compiler |
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79 elif $CC 2>&1 | grep -i "C for AIX Compiler" > /dev/null 2>&1 && |
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80 $CC -c -qlanglvl=ansi -qinfo=all conftest.c > /dev/null 2>&1 && |
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81 test -f conftest.o; then |
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82 if test -z "$ansi"; then |
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83 vl_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" |
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84 else |
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85 vl_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd -qlanglvl=ansi" |
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86 fi |
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87 |
|
88 dnl IRIX C compiler |
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89 elif $CC -version 2>&1 | grep -i "MIPSpro Compilers" > /dev/null 2>&1 && |
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90 $CC -c -fullwarn -ansi -ansiE conftest.c > /dev/null 2>&1 && |
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91 test -f conftest.o; then |
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92 if test -z "$ansi"; then |
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93 vl_cv_prog_cc_warnings="-fullwarn" |
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94 else |
|
95 vl_cv_prog_cc_warnings="-fullwarn -ansi -ansiE" |
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96 fi |
|
97 |
|
98 dnl HP-UX C compiler |
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99 elif what $CC 2>&1 | grep -i "HP C Compiler" > /dev/null 2>&1 && |
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100 $CC -c -Aa +w1 conftest.c > /dev/null 2>&1 && |
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101 test -f conftest.o; then |
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102 if test -z "$ansi"; then |
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103 vl_cv_prog_cc_warnings="+w1" |
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104 else |
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105 vl_cv_prog_cc_warnings="+w1 -Aa" |
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106 fi |
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107 |
|
108 dnl The NEC SX-5 (Super-UX 10) C compiler |
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109 elif $CC -V 2>&1 | grep "/SX" > /dev/null 2>&1 && |
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110 $CC -c -pvctl[,]fullmsg -Xc conftest.c > /dev/null 2>&1 && |
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111 test -f conftest.o; then |
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112 if test -z "$ansi"; then |
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113 vl_cv_prog_cc_warnings="-pvctl[,]fullmsg" |
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114 else |
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115 vl_cv_prog_cc_warnings="-pvctl[,]fullmsg -Xc" |
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116 fi |
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117 |
|
118 dnl The Cray C compiler (Unicos) |
|
119 elif $CC -V 2>&1 | grep -i "Cray" > /dev/null 2>&1 && |
|
120 $CC -c -h msglevel 2 conftest.c > /dev/null 2>&1 && |
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121 test -f conftest.o; then |
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122 if test -z "$ansi"; then |
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123 vl_cv_prog_cc_warnings="-h msglevel 2" |
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124 else |
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125 vl_cv_prog_cc_warnings="-h msglevel 2 -h conform" |
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126 fi |
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127 |
|
128 fi |
|
129 rm -f conftest.* |
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130 fi |
|
131 if test -n "$vl_cv_prog_cc_warnings"; then |
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132 CFLAGS="$CFLAGS $vl_cv_prog_cc_warnings" |
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133 else |
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134 vl_cv_prog_cc_warnings="unknown" |
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135 fi |
|
136 ]) |
|
137 ])dnl |
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138 |
|
139 dnl --------------------------------------------------------------------------- |
|
140 dnl Available from the GNU Autoconf Macro Archive at: |
|
141 dnl http://autoconf-archive.cryp.to/ax_lang_compiler_ms.html |
|
142 dnl --------------------------------------------------------------------------- |
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143 |
|
144 dnl @synopsis AX_LANG_COMPILER_MS |
|
145 dnl |
|
146 dnl Check whether the compiler for the current language is Microsoft. |
|
147 dnl |
|
148 dnl This macro is modeled after _AC_LANG_COMPILER_GNU in the GNU |
|
149 dnl Autoconf implementation. |
|
150 dnl |
|
151 dnl @category InstalledPackages |
|
152 dnl @author Braden McDaniel <braden@endoframe.com> |
|
153 dnl @version 2004-11-15 |
|
154 dnl @license AllPermissive |
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155 |
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156 AC_DEFUN([AX_LANG_COMPILER_MS], |
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157 [AC_CACHE_CHECK([whether we are using the Microsoft _AC_LANG compiler], |
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158 [ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms], |
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159 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef _MSC_VER |
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160 choke me |
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161 #endif |
|
162 ]])], |
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163 [ax_compiler_ms=yes], |
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164 [ax_compiler_ms=no]) |
|
165 ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms=$ax_compiler_ms |
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166 ])]) |
|
167 |
|
168 dnl --------------------------------------------------------------------------- |
|
169 dnl Available from the GNU Autoconf Macro Archive at: |
|
170 dnl http://www.gnu.org/software/ac-archive/ax_check_gl.html |
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171 dnl --------------------------------------------------------------------------- |
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172 |
|
173 dnl @synopsis AX_CHECK_GL |
|
174 dnl |
|
175 dnl Check for an OpenGL implementation. If GL is found, the required |
|
176 dnl compiler and linker flags are included in the output variables |
|
177 dnl "GL_CFLAGS" and "GL_LIBS", respectively. This macro adds the |
|
178 dnl configure option "--with-apple-opengl-framework", which users can |
|
179 dnl use to indicate that Apple's OpenGL framework should be used on Mac |
|
180 dnl OS X. If Apple's OpenGL framework is used, the symbol |
|
181 dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If no GL implementation |
|
182 dnl is found, "no_gl" is set to "yes". |
|
183 dnl |
|
184 dnl @category InstalledPackages |
|
185 dnl @author Braden McDaniel <braden@endoframe.com> |
|
186 dnl @version 2004-11-15 |
|
187 dnl @license AllPermissive |
|
188 |
|
189 AC_DEFUN([AX_CHECK_GL], |
|
190 [AC_REQUIRE([AC_PATH_X])dnl |
|
191 AC_REQUIRE([ACX_PTHREAD])dnl |
|
192 |
|
193 # |
|
194 # There isn't a reliable way to know we should use the Apple OpenGL framework |
|
195 # without a configure option. A Mac OS X user may have installed an |
|
196 # alternative GL implementation (e.g., Mesa), which may or may not depend on X. |
|
197 # |
|
198 AC_ARG_WITH([apple-opengl-framework], |
|
199 [AC_HELP_STRING([--with-apple-opengl-framework], |
|
200 [use Apple OpenGL framework (Mac OS X only)])]) |
|
201 if test "X$with_apple_opengl_framework" = "Xyes"; then |
|
202 AC_DEFINE([HAVE_APPLE_OPENGL_FRAMEWORK], [1], |
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203 [Use the Apple OpenGL framework.]) |
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204 GL_LIBS="-framework OpenGL" |
|
205 else |
|
206 AC_LANG_PUSH(C) |
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207 |
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208 AX_LANG_COMPILER_MS |
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209 if test X$ax_compiler_ms = Xno; then |
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210 GL_CFLAGS="${PTHREAD_CFLAGS}" |
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211 GL_LIBS="${PTHREAD_LIBS} -lm" |
|
212 fi |
|
213 |
|
214 # |
|
215 # Use x_includes and x_libraries if they have been set (presumably by |
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216 # AC_PATH_X). |
|
217 # |
|
218 if test "X$no_x" != "Xyes"; then |
|
219 if test -n "$x_includes"; then |
|
220 GL_CFLAGS="-I${x_includes} ${GL_CFLAGS}" |
|
221 fi |
|
222 if test -n "$x_libraries"; then |
|
223 GL_LIBS="-L${x_libraries} -lX11 ${GL_LIBS}" |
|
224 fi |
|
225 fi |
|
226 |
|
227 AC_CHECK_HEADERS([windows.h]) |
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228 |
|
229 AC_CACHE_CHECK([for OpenGL library], [ax_cv_check_gl_libgl], |
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230 [ax_cv_check_gl_libgl="no" |
|
231 ax_save_CPPFLAGS="${CPPFLAGS}" |
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232 CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" |
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233 ax_save_LIBS="${LIBS}" |
|
234 LIBS="" |
|
235 ax_check_libs="-lopengl32 -lGL" |
|
236 for ax_lib in ${ax_check_libs}; do |
|
237 if test X$ax_compiler_ms = Xyes; then |
|
238 ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` |
|
239 else |
|
240 ax_try_lib="${ax_lib}" |
|
241 fi |
|
242 LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" |
|
243 AC_LINK_IFELSE( |
|
244 [AC_LANG_PROGRAM([[ |
|
245 # if HAVE_WINDOWS_H && defined(_WIN32) |
|
246 # include <windows.h> |
|
247 # endif |
|
248 # include <GL/gl.h>]], |
|
249 [[glBegin(0)]])], |
|
250 [ax_cv_check_gl_libgl="${ax_try_lib}"; break]) |
|
251 done |
|
252 LIBS=${ax_save_LIBS} |
|
253 CPPFLAGS=${ax_save_CPPFLAGS}]) |
|
254 |
|
255 if test "X${ax_cv_check_gl_libgl}" = "Xno"; then |
|
256 no_gl="yes" |
|
257 GL_CFLAGS="" |
|
258 GL_LIBS="" |
|
259 else |
|
260 GL_LIBS="${ax_cv_check_gl_libgl} ${GL_LIBS}" |
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261 fi |
|
262 AC_LANG_POP(C) |
|
263 fi |
|
264 |
|
265 AC_SUBST([GL_CFLAGS]) |
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266 AC_SUBST([GL_LIBS]) |
|
267 ])dnl |
|
268 |
|
269 dnl --------------------------------------------------------------------------- |
|
270 dnl Available from the GNU Autoconf Macro Archive at: |
|
271 dnl http://www.gnu.org/software/ac-archive/ax_check_glu.html |
|
272 dnl --------------------------------------------------------------------------- |
|
273 |
|
274 dnl @synopsis AX_CHECK_GLU |
|
275 dnl |
|
276 dnl Check for GLU. If GLU is found, the required preprocessor and |
|
277 dnl linker flags are included in the output variables "GLU_CFLAGS" and |
|
278 dnl "GLU_LIBS", respectively. This macro adds the configure option |
|
279 dnl "--with-apple-opengl-framework", which users can use to indicate |
|
280 dnl that Apple's OpenGL framework should be used on Mac OS X. If |
|
281 dnl Apple's OpenGL framework is used, the symbol |
|
282 dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If no GLU implementation |
|
283 dnl is found, "no_glu" is set to "yes". |
|
284 dnl |
|
285 dnl @category InstalledPackages |
|
286 dnl @author Braden McDaniel <braden@endoframe.com> |
|
287 dnl @version 2004-11-15 |
|
288 dnl @license AllPermissive |
|
289 |
|
290 AC_DEFUN([AX_CHECK_GLU], |
|
291 [AC_REQUIRE([AX_CHECK_GL])dnl |
|
292 AC_REQUIRE([AC_PROG_CXX])dnl |
|
293 GLU_CFLAGS="${GL_CFLAGS}" |
|
294 if test "X${with_apple_opengl_framework}" != "Xyes"; then |
|
295 AC_CACHE_CHECK([for OpenGL Utility library], [ax_cv_check_glu_libglu], |
|
296 [ax_cv_check_glu_libglu="no" |
|
297 ax_save_CPPFLAGS="${CPPFLAGS}" |
|
298 CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" |
|
299 ax_save_LIBS="${LIBS}" |
|
300 LIBS="" |
|
301 ax_check_libs="-lglu32 -lGLU" |
|
302 for ax_lib in ${ax_check_libs}; do |
|
303 if test X$ax_compiler_ms = Xyes; then |
|
304 ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` |
|
305 else |
|
306 ax_try_lib="${ax_lib}" |
|
307 fi |
|
308 LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" |
|
309 # |
|
310 # libGLU typically links with libstdc++ on POSIX platforms. However, |
|
311 # setting the language to C++ means that test program source is named |
|
312 # "conftest.cc"; and Microsoft cl doesn't know what to do with such a |
|
313 # file. |
|
314 # |
|
315 AC_LANG_PUSH([C++]) |
|
316 if test X$ax_compiler_ms = Xyes; then |
|
317 AC_LANG_PUSH([C]) |
|
318 fi |
|
319 AC_LINK_IFELSE( |
|
320 [AC_LANG_PROGRAM([[ |
|
321 # if HAVE_WINDOWS_H && defined(_WIN32) |
|
322 # include <windows.h> |
|
323 # endif |
|
324 # include <GL/glu.h>]], |
|
325 [[gluBeginCurve(0)]])], |
|
326 [ax_cv_check_glu_libglu="${ax_try_lib}"; break]) |
|
327 if test X$ax_compiler_ms = Xyes; then |
|
328 AC_LANG_POP([C]) |
|
329 fi |
|
330 AC_LANG_POP([C++]) |
|
331 done |
|
332 LIBS=${ax_save_LIBS} |
|
333 CPPFLAGS=${ax_save_CPPFLAGS}]) |
|
334 if test "X${ax_cv_check_glu_libglu}" = "Xno"; then |
|
335 no_glu="yes" |
|
336 GLU_CFLAGS="" |
|
337 GLU_LIBS="" |
|
338 else |
|
339 GLU_LIBS="${ax_cv_check_glu_libglu} ${GL_LIBS}" |
|
340 fi |
|
341 fi |
|
342 AC_SUBST([GLU_CFLAGS]) |
|
343 AC_SUBST([GLU_LIBS]) |
|
344 ]) |
|
345 |
|
346 dnl --------------------------------------------------------------------------- |
|
347 dnl Available from the GNU Autoconf Macro Archive at: |
|
348 dnl http://www.gnu.org/software/ac-archive/ax_check_glut.html |
|
349 dnl --------------------------------------------------------------------------- |
|
350 |
|
351 dnl @synopsis AX_CHECK_GLUT |
|
352 dnl |
|
353 dnl Check for GLUT. If GLUT is found, the required compiler and linker |
|
354 dnl flags are included in the output variables "GLUT_CFLAGS" and |
|
355 dnl "GLUT_LIBS", respectively. This macro adds the configure option |
|
356 dnl "--with-apple-opengl-framework", which users can use to indicate |
|
357 dnl that Apple's OpenGL framework should be used on Mac OS X. If |
|
358 dnl Apple's OpenGL framework is used, the symbol |
|
359 dnl "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If GLUT is not found, |
|
360 dnl "no_glut" is set to "yes". |
|
361 dnl |
|
362 dnl @category InstalledPackages |
|
363 dnl @author Braden McDaniel <braden@endoframe.com> |
|
364 dnl @version 2004-11-15 |
|
365 dnl @license AllPermissive |
|
366 |
|
367 AC_DEFUN([AX_CHECK_GLUT], |
|
368 [AC_REQUIRE([AX_CHECK_GLU])dnl |
|
369 AC_REQUIRE([AC_PATH_XTRA])dnl |
|
370 |
|
371 if test "X$with_apple_opengl_framework" = "Xyes"; then |
|
372 GLUT_CFLAGS="${GLU_CFLAGS}" |
|
373 GLUT_LIBS="-framework GLUT -lobjc ${GL_LIBS}" |
|
374 else |
|
375 GLUT_CFLAGS=${GLU_CFLAGS} |
|
376 GLUT_LIBS=${GLU_LIBS} |
|
377 |
|
378 # |
|
379 # If X is present, assume GLUT depends on it. |
|
380 # |
|
381 if test "X${no_x}" != "Xyes"; then |
|
382 GLUT_LIBS="${X_PRE_LIBS} -lXmu -lXi ${X_EXTRA_LIBS} ${GLUT_LIBS}" |
|
383 fi |
|
384 |
|
385 AC_LANG_PUSH(C) |
|
386 |
|
387 ax_save_CPPFLAGS="${CPPFLAGS}" |
|
388 CPPFLAGS="${GLUT_CFLAGS} ${CPPFLAGS}" |
|
389 |
|
390 AC_CACHE_CHECK([for GLUT library], [ax_cv_check_glut_libglut], |
|
391 [ax_cv_check_glut_libglut="no" |
|
392 ax_save_LIBS="${LIBS}" |
|
393 LIBS="" |
|
394 ax_check_libs="-lglut32 -lglut" |
|
395 for ax_lib in ${ax_check_libs}; do |
|
396 if test X$ax_compiler_ms = Xyes; then |
|
397 ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` |
|
398 else |
|
399 ax_try_lib="${ax_lib}" |
|
400 fi |
|
401 LIBS="${ax_try_lib} ${GLUT_LIBS} ${ax_save_LIBS}" |
|
402 AC_LINK_IFELSE( |
|
403 [AC_LANG_PROGRAM([[ |
|
404 # if HAVE_WINDOWS_H && defined(_WIN32) |
|
405 # include <windows.h> |
|
406 # endif |
|
407 # include <GL/glut.h>]], |
|
408 [[glutMainLoop()]])], |
|
409 [ax_cv_check_glut_libglut="${ax_try_lib}"; break]) |
|
410 |
|
411 done |
|
412 LIBS=${ax_save_LIBS} |
|
413 ]) |
|
414 CPPFLAGS="${ax_save_CPPFLAGS}" |
|
415 AC_LANG_POP(C) |
|
416 |
|
417 if test "X${ax_cv_check_glut_libglut}" = "Xno"; then |
|
418 no_glut="yes" |
|
419 GLUT_CFLAGS="" |
|
420 GLUT_LIBS="" |
|
421 else |
|
422 GLUT_LIBS="${ax_cv_check_glut_libglut} ${GLUT_LIBS}" |
|
423 fi |
|
424 fi |
|
425 |
|
426 AC_SUBST([GLUT_CFLAGS]) |
|
427 AC_SUBST([GLUT_LIBS]) |
|
428 ])dnl |
|
429 |
|
430 dnl --------------------------------------------------------------------------- |
|
431 dnl Available from the GNU Autoconf Macro Archive at: |
|
432 dnl http://www.gnu.org/software/ac-archive/acx_pthread.html |
|
433 dnl --------------------------------------------------------------------------- |
|
434 |
|
435 dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) |
|
436 dnl |
|
437 dnl This macro figures out how to build C programs using POSIX threads. |
|
438 dnl It sets the PTHREAD_LIBS output variable to the threads library and |
|
439 dnl linker flags, and the PTHREAD_CFLAGS output variable to any special |
|
440 dnl C compiler flags that are needed. (The user can also force certain |
|
441 dnl compiler flags/libs to be tested by setting these environment |
|
442 dnl variables.) |
|
443 dnl |
|
444 dnl Also sets PTHREAD_CC to any special C compiler that is needed for |
|
445 dnl multi-threaded programs (defaults to the value of CC otherwise). |
|
446 dnl (This is necessary on AIX to use the special cc_r compiler alias.) |
|
447 dnl |
|
448 dnl NOTE: You are assumed to not only compile your program with these |
|
449 dnl flags, but also link it with them as well. e.g. you should link |
|
450 dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS |
|
451 dnl $LIBS |
|
452 dnl |
|
453 dnl If you are only building threads programs, you may wish to use |
|
454 dnl these variables in your default LIBS, CFLAGS, and CC: |
|
455 dnl |
|
456 dnl LIBS="$PTHREAD_LIBS $LIBS" |
|
457 dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS" |
|
458 dnl CC="$PTHREAD_CC" |
|
459 dnl |
|
460 dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute |
|
461 dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to |
|
462 dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX). |
|
463 dnl |
|
464 dnl ACTION-IF-FOUND is a list of shell commands to run if a threads |
|
465 dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to |
|
466 dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the |
|
467 dnl default action will define HAVE_PTHREAD. |
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468 dnl |
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469 dnl Please let the authors know if this macro fails on any platform, or |
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470 dnl if you have any other suggestions or comments. This macro was based |
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471 dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with |
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472 dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros |
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473 dnl posted by Alejandro Forero Cuervo to the autoconf macro repository. |
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474 dnl We are also grateful for the helpful feedback of numerous users. |
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475 dnl |
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476 dnl @category InstalledPackages |
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477 dnl @author Steven G. Johnson <stevenj@alum.mit.edu> |
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478 dnl @version 2005-01-14 |
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479 dnl @license GPLWithACException |
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480 |
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481 AC_DEFUN([ACX_PTHREAD], [ |
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482 AC_REQUIRE([AC_CANONICAL_HOST]) |
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483 AC_LANG_SAVE |
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484 AC_LANG_C |
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485 acx_pthread_ok=no |
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486 |
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487 # We used to check for pthread.h first, but this fails if pthread.h |
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488 # requires special compiler flags (e.g. on True64 or Sequent). |
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489 # It gets checked for in the link test anyway. |
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490 |
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491 # First of all, check if the user has set any of the PTHREAD_LIBS, |
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492 # etcetera environment variables, and if threads linking works using |
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493 # them: |
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494 if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then |
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495 save_CFLAGS="$CFLAGS" |
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496 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" |
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497 save_LIBS="$LIBS" |
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498 LIBS="$PTHREAD_LIBS $LIBS" |
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499 AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS]) |
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500 AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes) |
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501 AC_MSG_RESULT($acx_pthread_ok) |
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502 if test x"$acx_pthread_ok" = xno; then |
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503 PTHREAD_LIBS="" |
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504 PTHREAD_CFLAGS="" |
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505 fi |
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506 LIBS="$save_LIBS" |
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507 CFLAGS="$save_CFLAGS" |
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508 fi |
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509 |
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510 # We must check for the threads library under a number of different |
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511 # names; the ordering is very important because some systems |
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512 # (e.g. DEC) have both -lpthread and -lpthreads, where one of the |
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513 # libraries is broken (non-POSIX). |
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514 |
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515 # Create a list of thread flags to try. Items starting with a "-" are |
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516 # C compiler flags, and other items are library names, except for "none" |
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517 # which indicates that we try without any flags at all, and "pthread-config" |
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518 # which is a program returning the flags for the Pth emulation library. |
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519 |
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520 acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" |
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521 |
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522 # The ordering *is* (sometimes) important. Some notes on the |
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523 # individual items follow: |
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524 |
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525 # pthreads: AIX (must check this before -lpthread) |
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526 # none: in case threads are in libc; should be tried before -Kthread and |
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527 # other compiler flags to prevent continual compiler warnings |
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528 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) |
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529 # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) |
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530 # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) |
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531 # -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads) |
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532 # -pthreads: Solaris/gcc |
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533 # -mthreads: Mingw32/gcc, Lynx/gcc |
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534 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it |
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535 # doesn't hurt to check since this sometimes defines pthreads too; |
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536 # also defines -D_REENTRANT) |
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537 # pthread: Linux, etcetera |
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538 # --thread-safe: KAI C++ |
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539 # pthread-config: use pthread-config program (for GNU Pth library) |
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540 |
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541 case "${host_cpu}-${host_os}" in |
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542 *solaris*) |
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543 |
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544 # On Solaris (at least, for some versions), libc contains stubbed |
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545 # (non-functional) versions of the pthreads routines, so link-based |
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546 # tests will erroneously succeed. (We need to link with -pthread or |
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547 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather |
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548 # a function called by this macro, so we could check for that, but |
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549 # who knows whether they'll stub that too in a future libc.) So, |
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550 # we'll just look for -pthreads and -lpthread first: |
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551 |
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552 acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags" |
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553 ;; |
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554 esac |
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555 |
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556 if test x"$acx_pthread_ok" = xno; then |
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557 for flag in $acx_pthread_flags; do |
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558 |
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559 case $flag in |
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560 none) |
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561 AC_MSG_CHECKING([whether pthreads work without any flags]) |
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562 ;; |
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563 |
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564 -*) |
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565 AC_MSG_CHECKING([whether pthreads work with $flag]) |
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566 PTHREAD_CFLAGS="$flag" |
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567 ;; |
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568 |
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569 pthread-config) |
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570 AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no) |
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571 if test x"$acx_pthread_config" = xno; then continue; fi |
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572 PTHREAD_CFLAGS="`pthread-config --cflags`" |
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573 PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" |
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574 ;; |
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575 |
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576 *) |
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577 AC_MSG_CHECKING([for the pthreads library -l$flag]) |
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578 PTHREAD_LIBS="-l$flag" |
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579 ;; |
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580 esac |
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581 |
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582 save_LIBS="$LIBS" |
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583 save_CFLAGS="$CFLAGS" |
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584 LIBS="$PTHREAD_LIBS $LIBS" |
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585 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" |
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586 |
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587 # Check for various functions. We must include pthread.h, |
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588 # since some functions may be macros. (On the Sequent, we |
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589 # need a special flag -Kthread to make this header compile.) |
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590 # We check for pthread_join because it is in -lpthread on IRIX |
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591 # while pthread_create is in libc. We check for pthread_attr_init |
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592 # due to DEC craziness with -lpthreads. We check for |
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593 # pthread_cleanup_push because it is one of the few pthread |
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594 # functions on Solaris that doesn't have a non-functional libc stub. |
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595 # We try pthread_create on general principles. |
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596 AC_TRY_LINK([#include <pthread.h>], |
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597 [pthread_t th; pthread_join(th, 0); |
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598 pthread_attr_init(0); pthread_cleanup_push(0, 0); |
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599 pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], |
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600 [acx_pthread_ok=yes]) |
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601 |
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602 LIBS="$save_LIBS" |
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603 CFLAGS="$save_CFLAGS" |
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604 |
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605 AC_MSG_RESULT($acx_pthread_ok) |
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606 if test "x$acx_pthread_ok" = xyes; then |
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607 break; |
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608 fi |
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609 |
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610 PTHREAD_LIBS="" |
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611 PTHREAD_CFLAGS="" |
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612 done |
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613 fi |
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614 |
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615 # Various other checks: |
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616 if test "x$acx_pthread_ok" = xyes; then |
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617 save_LIBS="$LIBS" |
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618 LIBS="$PTHREAD_LIBS $LIBS" |
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619 save_CFLAGS="$CFLAGS" |
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620 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" |
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621 |
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622 # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. |
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623 AC_MSG_CHECKING([for joinable pthread attribute]) |
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624 attr_name=unknown |
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625 for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do |
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626 AC_TRY_LINK([#include <pthread.h>], [int attr=$attr;], |
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627 [attr_name=$attr; break]) |
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628 done |
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629 AC_MSG_RESULT($attr_name) |
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630 if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then |
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631 AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name, |
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632 [Define to necessary symbol if this constant |
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633 uses a non-standard name on your system.]) |
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634 fi |
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635 |
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636 AC_MSG_CHECKING([if more special flags are required for pthreads]) |
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637 flag=no |
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638 case "${host_cpu}-${host_os}" in |
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639 *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";; |
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640 *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";; |
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641 esac |
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642 AC_MSG_RESULT(${flag}) |
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643 if test "x$flag" != xno; then |
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644 PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" |
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645 fi |
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646 |
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647 LIBS="$save_LIBS" |
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648 CFLAGS="$save_CFLAGS" |
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649 |
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650 # More AIX lossage: must compile with cc_r |
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651 AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC}) |
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652 else |
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653 PTHREAD_CC="$CC" |
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654 fi |
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655 |
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656 AC_SUBST(PTHREAD_LIBS) |
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657 AC_SUBST(PTHREAD_CFLAGS) |
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658 AC_SUBST(PTHREAD_CC) |
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659 |
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660 # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: |
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661 if test x"$acx_pthread_ok" = xyes; then |
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662 ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1]) |
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663 : |
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664 else |
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665 acx_pthread_ok=no |
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666 $2 |
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667 fi |
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668 AC_LANG_RESTORE |
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669 ])dnl ACX_PTHREAD |