The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 1 | # configure.ac |
| 2 | |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 3 | # Copyright (c) 2004-2016 Glenn Randers-Pehrson |
Alex Naidis | 3586ba4 | 2016-10-26 12:36:09 +0200 | [diff] [blame^] | 4 | # Last changed in libpng 1.6.25 [October 20, 2016] |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 5 | |
| 6 | # This code is released under the libpng license. |
| 7 | # For conditions of distribution and use, see the disclaimer |
| 8 | # and license in png.h |
| 9 | |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 10 | dnl Process this file with autoconf to produce a configure script. |
| 11 | dnl |
| 12 | dnl Minor upgrades (compatible ABI): increment the package version |
| 13 | dnl (third field in two places below) and set the PNGLIB_RELEASE |
| 14 | dnl variable. |
| 15 | dnl |
| 16 | dnl Major upgrades (incompatible ABI): increment the package major |
| 17 | dnl version (second field, or first if desired), set the minor |
| 18 | dnl to 0, set PNGLIB_MAJOR below *and* follow the instructions in |
| 19 | dnl Makefile.am to upgrade the package name. |
| 20 | |
| 21 | dnl This is here to prevent earlier autoconf from being used, it |
| 22 | dnl should not be necessary to regenerate configure if the time |
| 23 | dnl stamps are correct |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 24 | AC_PREREQ([2.68]) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 25 | |
| 26 | dnl Version number stuff here: |
| 27 | |
Alex Naidis | 3586ba4 | 2016-10-26 12:36:09 +0200 | [diff] [blame^] | 28 | AC_INIT([libpng],[1.6.26],[png-mng-implement@lists.sourceforge.net]) |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 29 | AC_CONFIG_MACRO_DIR([scripts]) |
| 30 | |
| 31 | # libpng does not follow GNU file name conventions (hence 'foreign') |
| 32 | # color-tests requires automake 1.11 or later |
| 33 | # silent-rules requires automake 1.11 or later |
| 34 | # dist-xz requires automake 1.11 or later |
| 35 | # 1.12.2 fixes a security issue in 1.11.2 and 1.12.1 |
| 36 | # 1.13 is required for parallel tests |
Sireesh Tripurari | b478e66 | 2014-05-09 15:15:10 +0530 | [diff] [blame] | 37 | AM_INIT_AUTOMAKE([1.13 foreign dist-xz color-tests silent-rules subdir-objects]) |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 38 | # The following line causes --disable-maintainer-mode to be the default to |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 39 | # configure. This is necessary because libpng distributions cannot rely on the |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 40 | # time stamps of the autotools generated files being correct |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 41 | AM_MAINTAINER_MODE |
| 42 | |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 43 | dnl configure.ac and Makefile.am expect automake 1.11.2 or a compatible later |
| 44 | dnl version; aclocal.m4 will generate a failure if you use a prior version of |
| 45 | dnl automake, so the following is not necessary (and is not defined anyway): |
| 46 | dnl AM_PREREQ([1.11.2]) |
| 47 | dnl stop configure from automagically running automake |
| 48 | |
Alex Naidis | 3586ba4 | 2016-10-26 12:36:09 +0200 | [diff] [blame^] | 49 | PNGLIB_VERSION=1.6.26 |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 50 | PNGLIB_MAJOR=1 |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 51 | PNGLIB_MINOR=6 |
Alex Naidis | 3586ba4 | 2016-10-26 12:36:09 +0200 | [diff] [blame^] | 52 | PNGLIB_RELEASE=26 |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 53 | |
| 54 | dnl End of version number stuff |
| 55 | |
| 56 | AC_CONFIG_SRCDIR([pngget.c]) |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 57 | AC_CONFIG_HEADERS([config.h]) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 58 | |
| 59 | # Checks for programs. |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 60 | AC_LANG([C]) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 61 | AC_PROG_CC |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 62 | AM_PROG_AS |
| 63 | LT_PATH_LD |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 64 | AC_PROG_CPP |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 65 | AC_PROG_AWK |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 66 | AC_PROG_INSTALL |
| 67 | AC_PROG_LN_S |
| 68 | AC_PROG_MAKE_SET |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 69 | |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 70 | dnl libtool/libtoolize; version 2.4.2 is the tested version. This or any |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 71 | dnl compatible later version may be used |
| 72 | LT_INIT([win32-dll]) |
| 73 | LT_PREREQ([2.4.2]) |
| 74 | |
| 75 | # Some awks crash when confronted with pnglibconf.dfa, do a test run now |
| 76 | # to make sure this doesn't happen |
| 77 | AC_MSG_CHECKING([that AWK works]) |
| 78 | if ${AWK} -f ${srcdir}/scripts/options.awk out="/dev/null" version=search\ |
| 79 | ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\ |
| 80 | ${srcdir}/pngusr.dfa 1>&2 |
| 81 | then |
| 82 | AC_MSG_RESULT([ok]) |
| 83 | else |
| 84 | AC_MSG_FAILURE([failed], 1) |
| 85 | fi |
| 86 | |
| 87 | # This is a remnant of the old cc -E validation, where it may have been |
| 88 | # necessary to use a different preprocessor for .dfn files |
| 89 | DFNCPP="$CPP" |
| 90 | AC_SUBST(DFNCPP) |
| 91 | |
| 92 | # -Werror cannot be passed to GCC in CFLAGS because configure will fail (it |
| 93 | # checks the compiler with a program that generates a warning), add the |
| 94 | # following option to deal with this |
| 95 | AC_ARG_VAR(PNG_COPTS, |
| 96 | [additional flags for the C compiler, use this for options that would] |
| 97 | [cause configure itself to fail]) |
| 98 | AC_ARG_ENABLE(werror, |
| 99 | AS_HELP_STRING([[[--enable-werror[=OPT]]]], |
| 100 | [Pass -Werror or the given argument to the compiler if it is supported]), |
| 101 | [test "$enable_werror" = "yes" && enable_werror="-Werror" |
| 102 | if test "$enable_werror" != "no"; then |
| 103 | sav_CFLAGS="$CFLAGS" |
| 104 | CFLAGS="$enable_werror $CFLAGS" |
| 105 | AC_MSG_CHECKING([if the compiler allows $enable_werror]) |
| 106 | AC_COMPILE_IFELSE( |
| 107 | [AC_LANG_SOURCE([ |
| 108 | [int main(int argc, char **argv){] |
| 109 | [return argv[argc-1][0];] |
| 110 | [}]])], |
| 111 | AC_MSG_RESULT(yes) |
| 112 | PNG_COPTS="$PNG_COPTS $enable_werror", |
| 113 | AC_MSG_RESULT(no)) |
| 114 | CFLAGS="$sav_CFLAGS" |
| 115 | fi],) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 116 | |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 117 | # For GCC 5 the default mode for C is -std=gnu11 instead of -std=gnu89 |
| 118 | # In pngpriv.h we request just the POSIX 1003.1 and C89 APIs by defining _POSIX_SOURCE to 1 |
| 119 | # This is incompatible with the new default mode, so we test for that and force the |
| 120 | # "-std=c89" compiler option: |
| 121 | AC_MSG_CHECKING([if we need to force back C standard to C89]) |
| 122 | AC_COMPILE_IFELSE( |
| 123 | [AC_LANG_PROGRAM([ |
| 124 | [#define _POSIX_SOURCE 1] |
| 125 | [#include <stdio.h>] |
| 126 | ])], |
| 127 | AC_MSG_RESULT(no),[ |
| 128 | if test "x$GCC" != "xyes"; then |
| 129 | AC_MSG_ERROR( |
| 130 | [Forcing back to C89 is required but the flags are only known for GCC]) |
| 131 | fi |
| 132 | AC_MSG_RESULT(yes) |
| 133 | CFLAGS="$CFLAGS -std=c89" |
| 134 | ]) |
| 135 | |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 136 | # Checks for header files. |
| 137 | AC_HEADER_STDC |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 138 | |
| 139 | # Checks for typedefs, structures, and compiler characteristics. |
| 140 | AC_C_CONST |
| 141 | AC_TYPE_SIZE_T |
| 142 | AC_STRUCT_TM |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 143 | AC_C_RESTRICT |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 144 | |
| 145 | # Checks for library functions. |
| 146 | AC_FUNC_STRTOD |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 147 | AC_CHECK_FUNCS([memset], , AC_MSG_ERROR(memset not found in libc)) |
| 148 | AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_MSG_ERROR(cannot find pow)) ) |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 149 | |
| 150 | # Some later POSIX 1003.1 functions are required for test programs, failure here |
| 151 | # is soft (the corresponding test program is not built). |
| 152 | AC_CHECK_FUNC([clock_gettime],,[AC_MSG_WARN([not building timepng])]) |
| 153 | AM_CONDITIONAL([HAVE_CLOCK_GETTIME], [test "$ac_cv_func_clock_gettime" = "yes"]) |
| 154 | |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 155 | AC_ARG_WITH(zlib-prefix, |
| 156 | AS_HELP_STRING([[[--with-zlib-prefix]]], |
| 157 | [prefix that may have been used in installed zlib]), |
| 158 | [ZPREFIX=${withval}], |
| 159 | [ZPREFIX='z_']) |
| 160 | AC_CHECK_LIB(z, zlibVersion, , |
| 161 | AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, , AC_MSG_ERROR(zlib not installed))) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 162 | |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 163 | # The following is for pngvalid, to ensure it catches FP errors even on |
| 164 | # platforms that don't enable FP exceptions, the function appears in the math |
| 165 | # library (typically), it's not an error if it is not found. |
| 166 | AC_CHECK_LIB([m], [feenableexcept]) |
| 167 | AC_CHECK_FUNCS([feenableexcept]) |
| 168 | |
| 169 | AC_MSG_CHECKING([if using Solaris linker]) |
| 170 | SLD=`$LD --version 2>&1 | grep Solaris` |
| 171 | if test "$SLD"; then |
| 172 | have_solaris_ld=yes |
| 173 | AC_MSG_RESULT(yes) |
| 174 | else |
| 175 | have_solaris_ld=no |
| 176 | AC_MSG_RESULT(no) |
| 177 | fi |
| 178 | AM_CONDITIONAL(HAVE_SOLARIS_LD, test "$have_solaris_ld" = "yes") |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 179 | |
| 180 | AC_MSG_CHECKING([if libraries can be versioned]) |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 181 | # Special case for PE/COFF platforms: ld reports |
| 182 | # support for version-script, but doesn't actually |
| 183 | # DO anything with it. |
| 184 | case $host in |
| 185 | *cygwin* | *mingw32* | *interix* ) |
| 186 | have_ld_version_script=no |
| 187 | AC_MSG_RESULT(no) |
| 188 | ;; |
| 189 | * ) |
| 190 | |
| 191 | if test "$have_solaris_ld" = "yes"; then |
| 192 | GLD=`$LD --help < /dev/null 2>&1 | grep 'M mapfile'` |
| 193 | else |
| 194 | GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script` |
| 195 | fi |
| 196 | |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 197 | if test "$GLD"; then |
| 198 | have_ld_version_script=yes |
| 199 | AC_MSG_RESULT(yes) |
| 200 | else |
| 201 | have_ld_version_script=no |
| 202 | AC_MSG_RESULT(no) |
| 203 | AC_MSG_WARN(*** You have not enabled versioned symbols.) |
| 204 | fi |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 205 | ;; |
| 206 | esac |
| 207 | |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 208 | AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes") |
| 209 | |
| 210 | if test "$have_ld_version_script" = "yes"; then |
| 211 | AC_MSG_CHECKING([for symbol prefix]) |
| 212 | SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \ |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 213 | | ${CPP-${CC-gcc} -E} - 2>&1 \ |
| 214 | | ${EGREP-grep} "^PREFIX=" \ |
| 215 | | ${SED-sed} -e "s:^PREFIX=::" -e "s:__USER_LABEL_PREFIX__::"` |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 216 | AC_SUBST(SYMBOL_PREFIX) |
| 217 | AC_MSG_RESULT($SYMBOL_PREFIX) |
| 218 | fi |
| 219 | |
| 220 | # Substitutions for .in files |
| 221 | AC_SUBST(PNGLIB_VERSION) |
| 222 | AC_SUBST(PNGLIB_MAJOR) |
| 223 | AC_SUBST(PNGLIB_MINOR) |
| 224 | AC_SUBST(PNGLIB_RELEASE) |
| 225 | |
| 226 | # Additional arguments (and substitutions) |
| 227 | # Allow the pkg-config directory to be set |
| 228 | AC_ARG_WITH(pkgconfigdir, |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 229 | AS_HELP_STRING([[[--with-pkgconfigdir]]], |
| 230 | [Use the specified pkgconfig dir (default is libdir/pkgconfig)]), |
| 231 | [pkgconfigdir=${withval}], |
| 232 | [pkgconfigdir='${libdir}/pkgconfig']) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 233 | |
| 234 | AC_SUBST([pkgconfigdir]) |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 235 | AC_MSG_NOTICE([[pkgconfig directory is ${pkgconfigdir}]]) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 236 | |
| 237 | # Make the *-config binary config scripts optional |
| 238 | AC_ARG_WITH(binconfigs, |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 239 | AS_HELP_STRING([[[--with-binconfigs]]], |
| 240 | [Generate shell libpng-config scripts as well as pkg-config data] |
| 241 | [@<:@default=yes@:>@]), |
| 242 | [if test "${withval}" = no; then |
| 243 | binconfigs= |
| 244 | AC_MSG_NOTICE([[libpng-config scripts will not be built]]) |
| 245 | else |
| 246 | binconfigs='${binconfigs}' |
| 247 | fi], |
| 248 | [binconfigs='${binconfigs}']) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 249 | AC_SUBST([binconfigs]) |
| 250 | |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 251 | # Support for prefixes to the API function names; this will generate defines |
| 252 | # at the start of the build to rename exported library functions |
| 253 | AC_ARG_WITH(libpng-prefix, |
| 254 | AS_HELP_STRING([[[--with-libpng-prefix]]], |
| 255 | [prefix libpng exported function (API) names with the given value]), |
| 256 | [if test "${withval:-no}" != "no"; then |
| 257 | AC_SUBST([PNG_PREFIX], [${withval}]) |
| 258 | fi]) |
| 259 | AM_CONDITIONAL([DO_PNG_PREFIX], [test "${with_libpng_prefix:-no}" != "no"]) |
| 260 | |
Sireesh Tripurari | b478e66 | 2014-05-09 15:15:10 +0530 | [diff] [blame] | 261 | # Control over what links are made for installed files. Versioned files are |
| 262 | # always installed, when the following options are turned on corresponding |
| 263 | # unversioned links are also created (normally as symbolic links): |
| 264 | AC_ARG_ENABLE([unversioned-links], |
| 265 | AS_HELP_STRING([[[--enable-unversioned-links]]], |
| 266 | [Installed libpng header files are placed in a versioned subdirectory] |
| 267 | [and installed libpng library (including DLL) files are versioned.] |
| 268 | [If this option is enabled unversioned links will be created pointing to] |
| 269 | [the corresponding installed files. If you use libpng.pc or] |
| 270 | [libpng-config for all builds you do not need these links, but if you] |
| 271 | [compile programs directly they will typically #include <png.h> and] |
| 272 | [link with -lpng; in that case you need the links.] |
| 273 | [The links can be installed manually using 'make install-header-links'] |
| 274 | [and 'make install-library-links' and can be removed using the] |
| 275 | [corresponding uninstall- targets. If you do enable this option every] |
| 276 | [libpng 'make install' will recreate the links to point to the just] |
| 277 | [installed version of libpng. The default is to create the links;] |
| 278 | [use --disable-unversioned-links to change this])) |
| 279 | |
| 280 | # The AM_CONDITIONAL test is written so that the default is enabled; |
| 281 | # --disable-unversioned-links must be given to turn the option off. |
| 282 | AM_CONDITIONAL([DO_INSTALL_LINKS],[test "$enable_unversioned_links" != "no"]) |
| 283 | |
| 284 | AC_ARG_ENABLE([unversioned-libpng-pc], |
| 285 | AS_HELP_STRING([[[--enable-unversioned-libpng-pc]]], |
| 286 | [Install the configuration file 'libpng.pc' as a link to the versioned] |
| 287 | [version. This is done by default - use --disable-unversioned-libpng-pc] |
| 288 | [to change this.])) |
| 289 | AM_CONDITIONAL([DO_INSTALL_LIBPNG_PC], |
| 290 | [test "$enable_unversioned_libpng_pc" != "no"]) |
| 291 | |
| 292 | AC_ARG_ENABLE([unversioned-libpng-config], |
| 293 | AS_HELP_STRING([[[--enable-unversioned-libpng-config]]], |
| 294 | [Install the configuration file 'libpng-config' as a link to the] |
| 295 | [versioned version. This is done by default - use] |
| 296 | [--disable-unversioned-libpng-config to change this.])) |
| 297 | AM_CONDITIONAL([DO_INSTALL_LIBPNG_CONFIG], |
| 298 | [test "$enable_unversioned_libpng_config" != "no"]) |
| 299 | |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 300 | # HOST SPECIFIC OPTIONS |
| 301 | # ===================== |
| 302 | # |
| 303 | # ARM |
| 304 | # === |
| 305 | # |
| 306 | # ARM NEON (SIMD) support. |
| 307 | |
| 308 | AC_ARG_ENABLE([arm-neon], |
| 309 | AS_HELP_STRING([[[--enable-arm-neon]]], |
| 310 | [Enable ARM NEON optimizations: =no/off, check, api, yes/on:] |
| 311 | [no/off: disable the optimizations; check: use internal checking code] |
| 312 | [(deprecated and poorly supported); api: disable by default, enable by] |
| 313 | [a call to png_set_option; yes/on: turn on unconditionally.] |
| 314 | [If not specified: determined by the compiler.]), |
| 315 | [case "$enableval" in |
| 316 | no|off) |
| 317 | # disable the default enabling on __ARM_NEON__ systems: |
| 318 | AC_DEFINE([PNG_ARM_NEON_OPT], [0], |
| 319 | [Disable ARM Neon optimizations]) |
| 320 | # Prevent inclusion of the assembler files below: |
| 321 | enable_arm_neon=no;; |
| 322 | check) |
| 323 | AC_DEFINE([PNG_ARM_NEON_CHECK_SUPPORTED], [], |
| 324 | [Check for ARM Neon support at run-time]);; |
| 325 | api) |
| 326 | AC_DEFINE([PNG_ARM_NEON_API_SUPPORTED], [], |
| 327 | [Turn on ARM Neon optimizations at run-time]);; |
| 328 | yes|on) |
| 329 | AC_DEFINE([PNG_ARM_NEON_OPT], [2], |
| 330 | [Enable ARM Neon optimizations]) |
| 331 | AC_MSG_WARN([--enable-arm-neon: please specify 'check' or 'api', if] |
| 332 | [you want the optimizations unconditionally pass -mfpu=neon] |
| 333 | [to the compiler.]);; |
| 334 | *) |
| 335 | AC_MSG_ERROR([--enable-arm-neon=${enable_arm_neon}: invalid value]) |
| 336 | esac]) |
| 337 | |
| 338 | # Add ARM specific files to all builds where the host_cpu is arm ('arm*') or |
| 339 | # where ARM optimizations were explicitly requested (this allows a fallback if a |
| 340 | # future host CPU does not match 'arm*') |
| 341 | |
| 342 | AM_CONDITIONAL([PNG_ARM_NEON], |
| 343 | [test "$enable_arm_neon" != 'no' && |
| 344 | case "$host_cpu" in |
Matt Sarett | 9b1fe63 | 2015-11-25 10:21:17 -0500 | [diff] [blame] | 345 | arm*|aarch64*) :;; |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 346 | *) test "$enable_arm_neon" != '';; |
| 347 | esac]) |
| 348 | |
Alex Naidis | 7a055fd | 2016-10-01 12:23:07 +0200 | [diff] [blame] | 349 | # MIPS |
| 350 | # === |
| 351 | # |
| 352 | # MIPS MSA (SIMD) support. |
| 353 | |
| 354 | AC_ARG_ENABLE([mips-msa], |
| 355 | AS_HELP_STRING([[[--enable-mips-msa]]], |
| 356 | [Enable MIPS MSA optimizations: =no/off, check, api, yes/on:] |
| 357 | [no/off: disable the optimizations; check: use internal checking code] |
| 358 | [(deprecated and poorly supported); api: disable by default, enable by] |
| 359 | [a call to png_set_option; yes/on: turn on unconditionally.] |
| 360 | [If not specified: determined by the compiler.]), |
| 361 | [case "$enableval" in |
| 362 | no|off) |
| 363 | # disable the default enabling on __mips_msa systems: |
| 364 | AC_DEFINE([PNG_MIPS_MSA_OPT], [0], |
| 365 | [Disable MIPS MSA optimizations]) |
| 366 | # Prevent inclusion of the assembler files below: |
| 367 | enable_mips_msa=no;; |
| 368 | check) |
| 369 | AC_DEFINE([PNG_MIPS_MSA_CHECK_SUPPORTED], [], |
| 370 | [Check for MIPS MSA support at run-time]);; |
| 371 | api) |
| 372 | AC_DEFINE([PNG_MIPS_MSA_API_SUPPORTED], [], |
| 373 | [Turn on MIPS MSA optimizations at run-time]);; |
| 374 | yes|on) |
| 375 | AC_DEFINE([PNG_MIPS_MSA_OPT], [2], |
| 376 | [Enable MIPS MSA optimizations]) |
| 377 | AC_MSG_WARN([--enable-mips-msa: please specify 'check' or 'api', if] |
| 378 | [you want the optimizations unconditionally pass '-mmsa -mfp64'] |
| 379 | [to the compiler.]);; |
| 380 | *) |
| 381 | AC_MSG_ERROR([--enable-mips-msa=${enable_mips_msa}: invalid value]) |
| 382 | esac]) |
| 383 | |
| 384 | # Add MIPS specific files to all builds where the host_cpu is mips ('mips*') or |
| 385 | # where MIPS optimizations were explicitly requested (this allows a fallback if a |
| 386 | # future host CPU does not match 'mips*') |
| 387 | |
| 388 | AM_CONDITIONAL([PNG_MIPS_MSA], |
| 389 | [test "$enable_mips_msa" != 'no' && |
| 390 | case "$host_cpu" in |
| 391 | mipsel*|mips64el*) :;; |
| 392 | esac]) |
| 393 | |
| 394 | # INTEL |
| 395 | # ===== |
| 396 | # |
| 397 | # INTEL SSE (SIMD) support. |
| 398 | |
| 399 | AC_ARG_ENABLE([intel-sse], |
| 400 | AS_HELP_STRING([[[--enable-intel-sse]]], |
| 401 | [Enable Intel SSE optimizations: =no/off, yes/on:] |
| 402 | [no/off: disable the optimizations;] |
| 403 | [yes/on: enable the optimizations.] |
| 404 | [If not specified: determined by the compiler.]), |
| 405 | [case "$enableval" in |
| 406 | no|off) |
| 407 | # disable the default enabling: |
| 408 | AC_DEFINE([PNG_INTEL_SSE_OPT], [0], |
| 409 | [Disable Intel SSE optimizations]) |
| 410 | # Prevent inclusion of the assembler files below: |
| 411 | enable_intel_sse=no;; |
| 412 | yes|on) |
| 413 | AC_DEFINE([PNG_INTEL_SSE_OPT], [1], |
| 414 | [Enable Intel SSE optimizations]);; |
| 415 | *) |
| 416 | AC_MSG_ERROR([--enable-intel-sse=${enable_intel_sse}: invalid value]) |
| 417 | esac]) |
| 418 | |
| 419 | # Add Intel specific files to all builds where the host_cpu is Intel ('x86*') |
| 420 | # or where Intel optimizations were explicitly requested (this allows a |
| 421 | # fallback if a future host CPU does not match 'x86*') |
| 422 | AM_CONDITIONAL([PNG_INTEL_SSE], |
| 423 | [test "$enable_intel_sse" != 'no' && |
| 424 | case "$host_cpu" in |
| 425 | i?86|x86_64) :;; |
| 426 | *) test "$enable_intel_sse" != '';; |
| 427 | esac]) |
| 428 | |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 429 | AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]]) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 430 | |
| 431 | # Config files, substituting as above |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 432 | AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in]) |
| 433 | AC_CONFIG_FILES([libpng-config:libpng-config.in], |
| 434 | [chmod +x libpng-config]) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 435 | |
| 436 | AC_OUTPUT |