Mercurial > mxe-octave
comparison configure.ac @ 4320:26e2e3ace9e6
handle unknown/unspecified AC_ARG options consistently
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 04 Jan 2017 21:29:05 -0500 |
parents | 79bddf470912 |
children | ce2a3053aabc |
comparison
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4319:79bddf470912 | 4320:26e2e3ace9e6 |
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77 AC_ARG_WITH([ccache], | 77 AC_ARG_WITH([ccache], |
78 [AS_HELP_STRING([--with-ccache], [use ccache (default: no)])], | 78 [AS_HELP_STRING([--with-ccache], [use ccache (default: no)])], |
79 [case $withval in | 79 [case $withval in |
80 no) USE_CCACHE=no ;; | 80 no) USE_CCACHE=no ;; |
81 yes) USE_CCACHE=yes ;; | 81 yes) USE_CCACHE=yes ;; |
82 *) AC_MSG_ERROR([bad value $enableval for --with-ccache]) ;; | 82 *) AC_MSG_ERROR([bad value "$enableval" for --with-ccache]) ;; |
83 esac], [USE_CCACHE=no]) | 83 esac], [USE_CCACHE=no]) |
84 AC_SUBST(USE_CCACHE) | 84 AC_SUBST(USE_CCACHE) |
85 | 85 |
86 AC_ARG_ENABLE(windows-64, | 86 AC_ARG_ENABLE([windows-64], |
87 [AS_HELP_STRING([--disable-windows-64], | 87 [AS_HELP_STRING([--disable-windows-64], |
88 [don't build a Windows 64 cross compiler])], | 88 [don't build a Windows 64 cross compiler])], |
89 [case $enableval in | 89 [case $enableval in |
90 no) ENABLE_WINDOWS_64=no ;; | 90 no) ENABLE_WINDOWS_64=no ;; |
91 yes) ENABLE_WINDOWS_64=yes ;; | 91 yes) ENABLE_WINDOWS_64=yes ;; |
92 *) AC_MSG_ERROR([bad value $enableval for --enable-windows-64]) ;; | 92 *) AC_MSG_ERROR([bad value "$enableval" for --enable-windows-64]) ;; |
93 esac], [ENABLE_WINDOWS_64=yes]) | 93 esac], [ENABLE_WINDOWS_64=yes]) |
94 | 94 |
95 AC_ARG_ENABLE(64, | 95 AC_ARG_ENABLE([64], |
96 [AS_HELP_STRING([--enable-64], | 96 [AS_HELP_STRING([--enable-64], |
97 [use 64-bit integers for array dimensions and indexing])], | 97 [use 64-bit integers for array dimensions and indexing])], |
98 [case $enableval in | 98 [case $enableval in |
99 no) ENABLE_64=no ;; | 99 no) ENABLE_64=no ;; |
100 yes) ENABLE_64=yes ;; | 100 yes) ENABLE_64=yes ;; |
101 *) AC_MSG_ERROR([bad value $enableval for --enable-64]) ;; | 101 *) AC_MSG_ERROR([bad value "$enableval" for --enable-64]) ;; |
102 esac], [ENABLE_64=unknown]) | 102 esac], [ENABLE_64=unknown]) |
103 | 103 |
104 if test "$ENABLE_64" = unknown; then | 104 if test "$ENABLE_64" = unknown; then |
105 ENABLE_64="$ENABLE_WINDOWS_64" | 105 ENABLE_64="$ENABLE_WINDOWS_64" |
106 fi | 106 fi |
107 | 107 |
108 AC_ARG_ENABLE(fortran-int64, | 108 AC_ARG_ENABLE([fortran-int64], |
109 [AS_HELP_STRING([--enable-fortran-int64], | 109 [AS_HELP_STRING([--enable-fortran-int64], |
110 [use 64-bit integers for fortran (and other) numerical library code])], | 110 [use 64-bit integers for fortran (and other) numerical library code])], |
111 [case $enableval in | 111 [case $enableval in |
112 no) ENABLE_FORTRAN_INT64=no ;; | 112 no) ENABLE_FORTRAN_INT64=no ;; |
113 yes) ENABLE_FORTRAN_INT64=yes ;; | 113 yes) ENABLE_FORTRAN_INT64=yes ;; |
114 *) AC_MSG_ERROR([bad value $enableval for --enable-fortran-int64]) ;; | 114 *) AC_MSG_ERROR([bad value "$enableval" for --enable-fortran-int64]) ;; |
115 esac], [ENABLE_FORTRAN_INT64=no]) | 115 esac], [ENABLE_FORTRAN_INT64=no]) |
116 | 116 |
117 if test "$ENABLE_64" = yes || test "$ENABLE_FORTRAN_INT64" = yes; then | 117 if test "$ENABLE_64" = yes || test "$ENABLE_FORTRAN_INT64" = yes; then |
118 if test "$ENABLE_WINDOWS_64" = no; then | 118 if test "$ENABLE_WINDOWS_64" = no; then |
119 AC_MSG_ERROR([--enable-fortran-int64 and --enable-64 both require --enable-windows-64]) | 119 AC_MSG_ERROR([--enable-fortran-int64 and --enable-64 both require --enable-windows-64]) |
122 | 122 |
123 AC_SUBST(ENABLE_64) | 123 AC_SUBST(ENABLE_64) |
124 AC_SUBST(ENABLE_FORTRAN_INT64) | 124 AC_SUBST(ENABLE_FORTRAN_INT64) |
125 AC_SUBST(ENABLE_WINDOWS_64) | 125 AC_SUBST(ENABLE_WINDOWS_64) |
126 | 126 |
127 BUILD_SHARED=yes | 127 AC_ARG_ENABLE([shared], |
128 AC_ARG_ENABLE(shared, | |
129 [AS_HELP_STRING([--disable-shared], [Disable shared libraries])], | 128 [AS_HELP_STRING([--disable-shared], [Disable shared libraries])], |
130 [if test "$enableval" = no; then BUILD_SHARED=no; fi], []) | 129 [case "$enableval" in |
130 no) BUILD_SHARED=no ;; | |
131 yes) BUILD_SHARED=yes ;; | |
132 *) AC_MSG_ERROR([bad value "$enableval" for --enable-shared]) ;; | |
133 esac], [BUILD_SHARED=yes]) | |
131 AC_SUBST(BUILD_SHARED) | 134 AC_SUBST(BUILD_SHARED) |
132 | 135 |
133 BUILD_STATIC=no | 136 AC_ARG_ENABLE([static], |
134 AC_ARG_ENABLE(static, | |
135 [AS_HELP_STRING([--enable-static], [Enable static libraries])], | 137 [AS_HELP_STRING([--enable-static], [Enable static libraries])], |
136 [if test "$enableval" = yes; then BUILD_STATIC=yes; fi], []) | 138 [case "$enableval" in |
139 no) BUILD_STATIC=no ;; | |
140 yes) BUILD_STATIC=yes ;; | |
141 *) AC_MSG_ERROR([bad value "$enableval" for --enable-static]) ;; | |
142 esac], [BUILD_STATIC=no]) | |
137 AC_SUBST(BUILD_STATIC) | 143 AC_SUBST(BUILD_STATIC) |
138 | 144 |
139 ENABLE_JIT=no | |
140 AC_ARG_ENABLE([jit], | 145 AC_ARG_ENABLE([jit], |
141 [AS_HELP_STRING([--enable-jit], [Enable Octave JIT compiler])], | 146 [AS_HELP_STRING([--enable-jit], [Enable Octave JIT compiler])], |
142 [if test "$enableval" = yes; then ENABLE_JIT=yes; fi], []) | 147 [case "$enableval" in |
148 no) ENABLE_JIT=no ;; | |
149 yes) ENABLE_JIT=yes ;; | |
150 *) AC_MSG_ERROR([bad value "$enableval" for --enable-jit]) ;; | |
151 esac], [ENABLE_JIT=no]) | |
143 AC_SUBST(ENABLE_JIT) | 152 AC_SUBST(ENABLE_JIT) |
144 | 153 |
145 ENABLE_JAVA=yes | |
146 AC_ARG_ENABLE([java], | 154 AC_ARG_ENABLE([java], |
147 [AS_HELP_STRING([--disable-java], [Disable Java/Octave interface])], | 155 [AS_HELP_STRING([--disable-java], [Disable Java/Octave interface])], |
148 [if test "$enableval" = no; then ENABLE_JAVA=no; fi], []) | 156 [case "$enableval" in |
157 no) ENABLE_JAVA=no ;; | |
158 yes) ENABLE_JAVA=yes ;; | |
159 *) AC_MSG_ERROR([bad value "$enableval" for --enable-java]) ;; | |
160 esac], [ENABLE_JAVA=yes]) | |
149 AC_SUBST(ENABLE_JAVA) | 161 AC_SUBST(ENABLE_JAVA) |
150 | 162 |
151 ENABLE_DOCS=yes | 163 AC_ARG_ENABLE([[docs]], |
152 AC_ARG_ENABLE([docs], | |
153 [AS_HELP_STRING([--disable-docs], [Disable building Octave documentation])], | 164 [AS_HELP_STRING([--disable-docs], [Disable building Octave documentation])], |
154 [if test "$enableval" = no; then ENABLE_DOCS=no; fi], []) | 165 [case "$enableval" in |
166 no) ENABLE_DOCS=no ;; | |
167 yes) ENABLE_DOCS=yes ;; | |
168 *) AC_MSG_ERROR([bad value "$enableval" for --enable-[docs]]) ;; | |
169 esac], [ENABLE_DOCS=yes]) | |
155 AC_SUBST(ENABLE_DOCS) | 170 AC_SUBST(ENABLE_DOCS) |
156 | 171 |
157 MXE_NATIVE_BUILD=no | 172 AC_ARG_ENABLE([[native-build]], |
158 AC_ARG_ENABLE([native-build], | |
159 [AS_HELP_STRING([--enable-native-build], | 173 [AS_HELP_STRING([--enable-native-build], |
160 [Enable native build (default is cross compile)])], | 174 [Enable native build (default is cross compile)])], |
161 [if test "$enableval" = yes; then MXE_NATIVE_BUILD=yes; fi], []) | 175 [case "$enableval" in |
176 no) MXE_NATIVE_BUILD=no ;; | |
177 yes) MXE_NATIVE_BUILD=yes ;; | |
178 *) AC_MSG_ERROR([bad value "$enableval" for --enable-[native-build]]) ;; | |
179 esac], [MXE_NATIVE_BUILD=no]) | |
162 AC_SUBST(MXE_NATIVE_BUILD) | 180 AC_SUBST(MXE_NATIVE_BUILD) |
163 | 181 |
164 USE_SYSTEM_FONTCONFIG=$MXE_NATIVE_BUILD | |
165 AC_ARG_ENABLE([system-fontconfig], | 182 AC_ARG_ENABLE([system-fontconfig], |
166 [AS_HELP_STRING([--enable-system-fontconfig], | 183 [AS_HELP_STRING([--enable-system-fontconfig], |
167 [Use fontconfig already installed on system])], | 184 [Use fontconfig already installed on system])], |
168 [if test "$enableval" = yes; then USE_SYSTEM_FONTCONFIG=yes; else USE_SYSTEM_FONTCONFIG=no; fi], []) | 185 [case "$enableval" in |
186 no) USE_SYSTEM_FONTCONFIG=no ;; | |
187 yes) USE_SYSTEM_FONTCONFIG=yes ;; | |
188 *) AC_MSG_ERROR([bad value "$enableval" for --enable-system-fontconfig]) ;; | |
189 esac], [USE_SYSTEM_FONTCONFIG=$MXE_NATIVE_BUILD]) | |
169 AC_SUBST(USE_SYSTEM_FONTCONFIG) | 190 AC_SUBST(USE_SYSTEM_FONTCONFIG) |
170 | 191 |
171 USE_SYSTEM_X11_LIBS=$MXE_NATIVE_BUILD | |
172 AC_ARG_ENABLE([system-x11-libs], | 192 AC_ARG_ENABLE([system-x11-libs], |
173 [AS_HELP_STRING([--enable-system-x11-libs], | 193 [AS_HELP_STRING([--enable-system-x11-libs], |
174 [Use X11 libraries already installed on system])], | 194 [Use X11 libraries already installed on system])], |
175 [if test "$enableval" = yes; then USE_SYSTEM_X11_LIBS=yes; else USE_SYSTEM_X11_LIBS=no; fi], []) | 195 [case "$enableval" in |
196 no) USE_SYSTEM_X11_LIBS=no ;; | |
197 yes) USE_SYSTEM_X11_LIBS=yes ;; | |
198 *) AC_MSG_ERROR([bad value "$enableval" for --enable-system-x11-libs]) ;; | |
199 esac], [USE_SYSTEM_X11_LIBS=$MXE_NATIVE_BUILD]) | |
176 AC_SUBST(USE_SYSTEM_X11_LIBS) | 200 AC_SUBST(USE_SYSTEM_X11_LIBS) |
177 | 201 |
178 USE_SYSTEM_GCC=$MXE_NATIVE_BUILD | |
179 AC_ARG_ENABLE([system-gcc], | 202 AC_ARG_ENABLE([system-gcc], |
180 [AS_HELP_STRING([--enable-system-gcc], | 203 [AS_HELP_STRING([--enable-system-gcc], |
181 [Use GCC already installed on system])], | 204 [Use GCC already installed on system])], |
182 [if test "$enableval" = yes; then USE_SYSTEM_GCC=yes; else USE_SYSTEM_GCC=no; fi], []) | 205 [case "$enableval" in |
206 no) USE_SYSTEM_GCC=no ;; | |
207 yes) USE_SYSTEM_GCC=yes ;; | |
208 *) AC_MSG_ERROR([bad value "$enableval" for --enable-system-gcc]) ;; | |
209 esac], [USE_SYSTEM_GCC=$MXE_NATIVE_BUILD]) | |
183 AC_SUBST(USE_SYSTEM_GCC) | 210 AC_SUBST(USE_SYSTEM_GCC) |
184 | 211 |
185 ENABLE_LIB64_DIRECTORY=no | 212 AC_ARG_ENABLE([lib64-directory], |
186 AC_ARG_ENABLE(lib64-directory, | |
187 [AS_HELP_STRING([--enable-lib64-directory], | 213 [AS_HELP_STRING([--enable-lib64-directory], |
188 [Search lib64 directory for libraries])], | 214 [Search lib64 directory for libraries])], |
189 [if test "$enableval" = yes; then ENABLE_LIB64_DIRECTORY=yes; fi], []) | 215 [case "$enableval" in |
216 no) ENABLE_LIB64_DIRECTORY=no ;; | |
217 yes) ENABLE_LIB64_DIRECTORY=yes ;; | |
218 *) AC_MSG_ERROR([bad value "$enableval" for --enable-lib64-directory]) ;; | |
219 esac], [ENABLE_LIB64_DIRECTORY=no]) | |
190 AC_SUBST(ENABLE_LIB64_DIRECTORY) | 220 AC_SUBST(ENABLE_LIB64_DIRECTORY) |
191 | 221 |
192 USE_PIC_FLAG=no | |
193 AC_ARG_ENABLE([pic-flag], | 222 AC_ARG_ENABLE([pic-flag], |
194 [AS_HELP_STRING([--enable-pic-flag], [Compile with PIC flag])], | 223 [AS_HELP_STRING([--enable-pic-flag], [Compile with PIC flag])], |
195 [if test "$enableval" = yes; then USE_PIC_FLAG=yes; fi], []) | 224 [case "$enableval" in |
225 no) USE_PIC_FLAG=no ;; | |
226 yes) USE_PIC_FLAG=yes ;; | |
227 *) AC_MSG_ERROR([bad value "$enableval" for --enable-pic-flag]) ;; | |
228 esac], [USE_PIC_FLAG=no]) | |
196 AC_SUBST(USE_PIC_FLAG) | 229 AC_SUBST(USE_PIC_FLAG) |
197 | 230 |
198 STRIP_DIST_FILES=yes | |
199 AC_ARG_ENABLE([strip-dist-files], | 231 AC_ARG_ENABLE([strip-dist-files], |
200 [AS_HELP_STRING([--disable-strip-dist-files], [Don't strip distributed files])], | 232 [AS_HELP_STRING([--disable-strip-dist-files], [Don't strip distributed files])], |
201 [if test "$enableval" = no; then STRIP_DIST_FILES=no; fi], []) | 233 [case "$enableval" in |
234 no) STRIP_DIST_FILES=no ;; | |
235 yes) STRIP_DIST_FILES=yes ;; | |
236 *) AC_MSG_ERROR([bad value "$enableval" for --enable-strip-dist-files]) ;; | |
237 esac], [STRIP_DIST_FILES=yes]) | |
202 AC_SUBST(STRIP_DIST_FILES) | 238 AC_SUBST(STRIP_DIST_FILES) |
203 | 239 |
204 ENABLE_OPENBLAS=yes | |
205 AC_ARG_ENABLE([openblas], | 240 AC_ARG_ENABLE([openblas], |
206 [AS_HELP_STRING([--disable-openblas], | 241 [AS_HELP_STRING([--disable-openblas], |
207 [Disable use of OpenBLAS in Octave])], | 242 [Disable use of OpenBLAS in Octave])], |
208 [if test "$enableval" = no; then ENABLE_OPENBLAS=no; fi], []) | 243 [case "$enableval" in |
244 no) ENABLE_OPENBLAS=no ;; | |
245 yes) ENABLE_OPENBLAS=yes ;; | |
246 *) AC_MSG_ERROR([bad value "$enableval" for --enable-openblas]) ;; | |
247 esac], [ENABLE_OPENBLAS=yes]) | |
209 AC_SUBST(ENABLE_OPENBLAS) | 248 AC_SUBST(ENABLE_OPENBLAS) |
210 | 249 |
211 ENABLE_QHULL_NO_STRICT_ALIASING_FLAG=no | |
212 AC_ARG_ENABLE([qhull-no-strict-aliasing-flag], | 250 AC_ARG_ENABLE([qhull-no-strict-aliasing-flag], |
213 [AS_HELP_STRING([--enable-qhull-no-strict-aliasing-flag], | 251 [AS_HELP_STRING([--enable-qhull-no-strict-aliasing-flag], |
214 [Compile Qhull with -fno-strict-aliasing flag])], | 252 [Compile Qhull with -fno-strict-aliasing flag])], |
215 [if test "$enableval" = yes; then | 253 [case "$enableval" in |
216 ENABLE_QHULL_NO_STRICT_ALIASING_FLAG=yes; | 254 no) ENABLE_QHULL_NO_STRICT_ALIASING_FLAG=no ;; |
217 fi], []) | 255 yes) ENABLE_QHULL_NO_STRICT_ALIASING_FLAG=yes ;; |
256 *) AC_MSG_ERROR([bad value "$enableval" for --enable-qhull-no-strict-aliasing-flag]) ;; | |
257 esac], [ENABLE_QHULL_NO_STRICT_ALIASING_FLAG=no]) | |
218 AC_SUBST(ENABLE_QHULL_NO_STRICT_ALIASING_FLAG) | 258 AC_SUBST(ENABLE_QHULL_NO_STRICT_ALIASING_FLAG) |
219 | 259 |
220 ENABLE_OCTAVE=stable | |
221 AC_ARG_ENABLE([octave], | 260 AC_ARG_ENABLE([octave], |
222 [AS_HELP_STRING([--enable-octave=stable], | 261 [AS_HELP_STRING([--enable-octave=stable], |
223 [Enable a specific build of Octave (stable, alpha, default)])], | 262 [Enable a specific build of Octave (stable, alpha, default)])], |
224 [], [enableval=$ENABLE_OCTAVE]) | 263 [case $enableval in |
225 | 264 stable) ENABLE_OCTAVE="stable-" ;; |
226 case $enableval in | 265 alpha) ENABLE_OCTAVE="" ;; |
227 stable) | 266 default) ENABLE_OCTAVE="default-" ;; |
228 ENABLE_OCTAVE="stable-" | 267 *) AC_MSG_ERROR([bad value "$enableval" for --enable-octave]) ;; |
229 ;; | 268 esac], [ENABLE_OCTAVE="stable-"]) |
230 alpha) | |
231 ENABLE_OCTAVE="" | |
232 ;; | |
233 default) | |
234 ENABLE_OCTAVE="default-" | |
235 ;; | |
236 *) | |
237 ENABLE_OCTAVE="stable-" | |
238 AC_MSG_WARN([Unknown octave type $enableval - using enable-octave=stable]) | |
239 ;; | |
240 esac | |
241 | |
242 AC_SUBST(ENABLE_OCTAVE) | 269 AC_SUBST(ENABLE_OCTAVE) |
243 | 270 |
244 ENABLE_BINARY_PACKAGES=no | |
245 AC_ARG_ENABLE([binary-packages], | 271 AC_ARG_ENABLE([binary-packages], |
246 [AS_HELP_STRING([--enable-binary-packages], | 272 [AS_HELP_STRING([--enable-binary-packages], |
247 [Enable creating binary Octave Forge packages])], | 273 [Enable creating binary Octave Forge packages])], |
248 [if test "$enableval" = yes; then ENABLE_BINARY_PACKAGES=yes; fi], []) | 274 [case "$enableval" in |
275 no) ENABLE_BINARY_PACKAGES=no ;; | |
276 yes) ENABLE_BINARY_PACKAGES=yes ;; | |
277 *) AC_MSG_ERROR([bad value "$enableval" for --enable-binary-packages]) ;; | |
278 esac], [ENABLE_BINARY_PACKAGES=no]) | |
249 AC_SUBST(ENABLE_BINARY_PACKAGES) | 279 AC_SUBST(ENABLE_BINARY_PACKAGES) |
250 | 280 |
251 ENABLE_DEVEL_TOOLS=no | |
252 AC_ARG_ENABLE([devel-tools], | 281 AC_ARG_ENABLE([devel-tools], |
253 [AS_HELP_STRING([--enable-devel-tools], | 282 [AS_HELP_STRING([--enable-devel-tools], |
254 [Enable creating developer tools such as gdb])], | 283 [Enable creating developer tools such as gdb])], |
255 [if test "$enableval" = yes; then ENABLE_DEVEL_TOOLS=yes; fi], []) | 284 [case "$enableval" in |
285 no) ENABLE_DEVEL_TOOLS=no ;; | |
286 yes) ENABLE_DEVEL_TOOLS=yes ;; | |
287 *) AC_MSG_ERROR([bad value "$enableval" for --enable-devel-tools]) ;; | |
288 esac], [ENABLE_DEVEL_TOOLS=no]) | |
256 AC_SUBST(ENABLE_DEVEL_TOOLS) | 289 AC_SUBST(ENABLE_DEVEL_TOOLS) |
257 | 290 |
258 ENABLE_QT5=no | |
259 AC_ARG_ENABLE([qt5], | 291 AC_ARG_ENABLE([qt5], |
260 [AS_HELP_STRING([--enable-qt5], | 292 [AS_HELP_STRING([--enable-qt5], |
261 [Enable compile of GNU octave using Qt5 (Experimental)])], | 293 [Enable compile of GNU octave using Qt5 (Experimental)])], |
262 [if test "$enableval" = yes; then ENABLE_QT5=yes; fi], []) | 294 [case "$enableval" in |
295 no) ENABLE_QT5=no ;; | |
296 yes) ENABLE_QT5=yes ;; | |
297 *) AC_MSG_ERROR([bad value "$enableval" for --enable-qt5]) ;; | |
298 esac], [ENABLE_QT5=no]) | |
263 AC_SUBST(ENABLE_QT5) | 299 AC_SUBST(ENABLE_QT5) |
264 | 300 |
265 # install dependancy package docs (or not to save space) | 301 # install dependancy package docs (or not to save space) |
266 ENABLE_DEP_DOCS=no | |
267 AC_ARG_ENABLE([dep-docs], | 302 AC_ARG_ENABLE([dep-docs], |
268 [AS_HELP_STRING([--enable-dep-docs], | 303 [AS_HELP_STRING([--enable-dep-docs], |
269 [Enable install of dependancy package dos])], | 304 [Enable install of dependancy package dos])], |
270 [if test "$enableval" = yes; then ENABLE_DEP_DOCS=yes; fi], []) | 305 [case "$enableval" in |
306 no) ENABLE_DEP_DOCS=no ;; | |
307 yes) ENABLE_DEP_DOCS=yes ;; | |
308 *) AC_MSG_ERROR([bad value "$enableval" for --enable-dep-docs]) ;; | |
309 esac], [ENABLE_DEP_DOCS=no]) | |
271 AC_SUBST(ENABLE_DEP_DOCS) | 310 AC_SUBST(ENABLE_DEP_DOCS) |
272 | |
273 | 311 |
274 ### Default is to cross compile for mingw. | 312 ### Default is to cross compile for mingw. |
275 | 313 |
276 echo $host_alias | 314 echo $host_alias |
277 if test -n "$host_alias"; then | 315 if test -n "$host_alias"; then |