| 1 | # configure.ac
|
|---|
| 2 |
|
|---|
| 3 | # Copyright (c) 2018 Cosmin Truta
|
|---|
| 4 | # Copyright (c) 2004-2016 Glenn Randers-Pehrson
|
|---|
| 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 |
|
|---|
| 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
|
|---|
| 24 | AC_PREREQ([2.68])
|
|---|
| 25 |
|
|---|
| 26 | dnl Version number stuff here:
|
|---|
| 27 |
|
|---|
| 28 | AC_INIT([libpng],[1.6.37],[png-mng-implement@lists.sourceforge.net])
|
|---|
| 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
|
|---|
| 37 | AM_INIT_AUTOMAKE([1.13 foreign dist-xz color-tests silent-rules subdir-objects])
|
|---|
| 38 | # The following line causes --disable-maintainer-mode to be the default to
|
|---|
| 39 | # configure. This is necessary because libpng distributions cannot rely on the
|
|---|
| 40 | # time stamps of the autotools generated files being correct
|
|---|
| 41 | AM_MAINTAINER_MODE
|
|---|
| 42 |
|
|---|
| 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 |
|
|---|
| 49 | PNGLIB_VERSION=1.6.37
|
|---|
| 50 | PNGLIB_MAJOR=1
|
|---|
| 51 | PNGLIB_MINOR=6
|
|---|
| 52 | PNGLIB_RELEASE=37
|
|---|
| 53 |
|
|---|
| 54 | dnl End of version number stuff
|
|---|
| 55 |
|
|---|
| 56 | AC_CONFIG_SRCDIR([pngget.c])
|
|---|
| 57 | AC_CONFIG_HEADERS([config.h])
|
|---|
| 58 |
|
|---|
| 59 | # Checks for programs.
|
|---|
| 60 | AC_LANG([C])
|
|---|
| 61 | AC_PROG_CC
|
|---|
| 62 | AM_PROG_AS
|
|---|
| 63 | LT_PATH_LD
|
|---|
| 64 | AC_PROG_CPP
|
|---|
| 65 | AC_PROG_AWK
|
|---|
| 66 | AC_PROG_INSTALL
|
|---|
| 67 | AC_PROG_LN_S
|
|---|
| 68 | AC_PROG_MAKE_SET
|
|---|
| 69 |
|
|---|
| 70 | dnl libtool/libtoolize; version 2.4.2 is the tested version. This or any
|
|---|
| 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],)
|
|---|
| 116 |
|
|---|
| 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 |
|
|---|
| 136 | # Checks for header files.
|
|---|
| 137 | AC_HEADER_STDC
|
|---|
| 138 |
|
|---|
| 139 | # Checks for typedefs, structures, and compiler characteristics.
|
|---|
| 140 | AC_C_CONST
|
|---|
| 141 | AC_TYPE_SIZE_T
|
|---|
| 142 | AC_STRUCT_TM
|
|---|
| 143 | AC_C_RESTRICT
|
|---|
| 144 |
|
|---|
| 145 | # Checks for library functions.
|
|---|
| 146 | AC_FUNC_STRTOD
|
|---|
| 147 | AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_MSG_ERROR(cannot find pow)) )
|
|---|
| 148 |
|
|---|
| 149 | # Some later POSIX 1003.1 functions are required for test programs, failure here
|
|---|
| 150 | # is soft (the corresponding test program is not built).
|
|---|
| 151 | AC_CHECK_FUNC([clock_gettime],,[AC_MSG_WARN([not building timepng])])
|
|---|
| 152 | AM_CONDITIONAL([HAVE_CLOCK_GETTIME], [test "$ac_cv_func_clock_gettime" = "yes"])
|
|---|
| 153 |
|
|---|
| 154 | AC_ARG_WITH(zlib-prefix,
|
|---|
| 155 | AS_HELP_STRING([[[--with-zlib-prefix]]],
|
|---|
| 156 | [prefix that may have been used in installed zlib]),
|
|---|
| 157 | [ZPREFIX=${withval}],
|
|---|
| 158 | [ZPREFIX='z_'])
|
|---|
| 159 | AC_CHECK_LIB(z, zlibVersion, ,
|
|---|
| 160 | AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, , AC_MSG_ERROR(zlib not installed)))
|
|---|
| 161 |
|
|---|
| 162 | # The following is for pngvalid, to ensure it catches FP errors even on
|
|---|
| 163 | # platforms that don't enable FP exceptions, the function appears in the math
|
|---|
| 164 | # library (typically), it's not an error if it is not found.
|
|---|
| 165 | AC_CHECK_LIB([m], [feenableexcept])
|
|---|
| 166 | AC_CHECK_FUNCS([feenableexcept])
|
|---|
| 167 |
|
|---|
| 168 | AC_MSG_CHECKING([if using Solaris linker])
|
|---|
| 169 | SLD=`$LD --version 2>&1 | grep Solaris`
|
|---|
| 170 | if test "$SLD"; then
|
|---|
| 171 | have_solaris_ld=yes
|
|---|
| 172 | AC_MSG_RESULT(yes)
|
|---|
| 173 | else
|
|---|
| 174 | have_solaris_ld=no
|
|---|
| 175 | AC_MSG_RESULT(no)
|
|---|
| 176 | fi
|
|---|
| 177 | AM_CONDITIONAL(HAVE_SOLARIS_LD, test "$have_solaris_ld" = "yes")
|
|---|
| 178 |
|
|---|
| 179 | AC_MSG_CHECKING([if libraries can be versioned])
|
|---|
| 180 | # Special case for PE/COFF platforms: ld reports
|
|---|
| 181 | # support for version-script, but doesn't actually
|
|---|
| 182 | # DO anything with it.
|
|---|
| 183 | case $host in
|
|---|
| 184 | *cygwin* | *mingw32* | *interix* )
|
|---|
| 185 | have_ld_version_script=no
|
|---|
| 186 | AC_MSG_RESULT(no)
|
|---|
| 187 | ;;
|
|---|
| 188 | * )
|
|---|
| 189 |
|
|---|
| 190 | if test "$have_solaris_ld" = "yes"; then
|
|---|
| 191 | GLD=`$LD --help < /dev/null 2>&1 | grep 'M mapfile'`
|
|---|
| 192 | else
|
|---|
| 193 | GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
|
|---|
| 194 | fi
|
|---|
| 195 |
|
|---|
| 196 | if test "$GLD"; then
|
|---|
| 197 | have_ld_version_script=yes
|
|---|
| 198 | AC_MSG_RESULT(yes)
|
|---|
| 199 | else
|
|---|
| 200 | have_ld_version_script=no
|
|---|
| 201 | AC_MSG_RESULT(no)
|
|---|
| 202 | AC_MSG_WARN(*** You have not enabled versioned symbols.)
|
|---|
| 203 | fi
|
|---|
| 204 | ;;
|
|---|
| 205 | esac
|
|---|
| 206 |
|
|---|
| 207 | AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
|
|---|
| 208 |
|
|---|
| 209 | if test "$have_ld_version_script" = "yes"; then
|
|---|
| 210 | AC_MSG_CHECKING([for symbol prefix])
|
|---|
| 211 | SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
|
|---|
| 212 | | ${CPP-${CC-gcc} -E} - 2>&1 \
|
|---|
| 213 | | ${EGREP-grep} "^PREFIX=" \
|
|---|
| 214 | | ${SED-sed} -e "s:^PREFIX=::" -e "s:__USER_LABEL_PREFIX__::"`
|
|---|
| 215 | AC_SUBST(SYMBOL_PREFIX)
|
|---|
| 216 | AC_MSG_RESULT($SYMBOL_PREFIX)
|
|---|
| 217 | fi
|
|---|
| 218 |
|
|---|
| 219 | # Substitutions for .in files
|
|---|
| 220 | AC_SUBST(PNGLIB_VERSION)
|
|---|
| 221 | AC_SUBST(PNGLIB_MAJOR)
|
|---|
| 222 | AC_SUBST(PNGLIB_MINOR)
|
|---|
| 223 | AC_SUBST(PNGLIB_RELEASE)
|
|---|
| 224 |
|
|---|
| 225 | # Additional arguments (and substitutions)
|
|---|
| 226 | # Allow the pkg-config directory to be set
|
|---|
| 227 | AC_ARG_WITH(pkgconfigdir,
|
|---|
| 228 | AS_HELP_STRING([[[--with-pkgconfigdir]]],
|
|---|
| 229 | [Use the specified pkgconfig dir (default is libdir/pkgconfig)]),
|
|---|
| 230 | [pkgconfigdir=${withval}],
|
|---|
| 231 | [pkgconfigdir='${libdir}/pkgconfig'])
|
|---|
| 232 |
|
|---|
| 233 | AC_SUBST([pkgconfigdir])
|
|---|
| 234 | AC_MSG_NOTICE([[pkgconfig directory is ${pkgconfigdir}]])
|
|---|
| 235 |
|
|---|
| 236 | # Make the *-config binary config scripts optional
|
|---|
| 237 | AC_ARG_WITH(binconfigs,
|
|---|
| 238 | AS_HELP_STRING([[[--with-binconfigs]]],
|
|---|
| 239 | [Generate shell libpng-config scripts as well as pkg-config data]
|
|---|
| 240 | [@<:@default=yes@:>@]),
|
|---|
| 241 | [if test "${withval}" = no; then
|
|---|
| 242 | binconfigs=
|
|---|
| 243 | AC_MSG_NOTICE([[libpng-config scripts will not be built]])
|
|---|
| 244 | else
|
|---|
| 245 | binconfigs='${binconfigs}'
|
|---|
| 246 | fi],
|
|---|
| 247 | [binconfigs='${binconfigs}'])
|
|---|
| 248 | AC_SUBST([binconfigs])
|
|---|
| 249 |
|
|---|
| 250 | # Support for prefixes to the API function names; this will generate defines
|
|---|
| 251 | # at the start of the build to rename exported library functions
|
|---|
| 252 | AC_ARG_WITH(libpng-prefix,
|
|---|
| 253 | AS_HELP_STRING([[[--with-libpng-prefix]]],
|
|---|
| 254 | [prefix libpng exported function (API) names with the given value]),
|
|---|
| 255 | [if test "${withval:-no}" != "no"; then
|
|---|
| 256 | AC_SUBST([PNG_PREFIX], [${withval}])
|
|---|
| 257 | fi])
|
|---|
| 258 | AM_CONDITIONAL([DO_PNG_PREFIX], [test "${with_libpng_prefix:-no}" != "no"])
|
|---|
| 259 |
|
|---|
| 260 | # Control over what links are made for installed files. Versioned files are
|
|---|
| 261 | # always installed, when the following options are turned on corresponding
|
|---|
| 262 | # unversioned links are also created (normally as symbolic links):
|
|---|
| 263 | AC_ARG_ENABLE([unversioned-links],
|
|---|
| 264 | AS_HELP_STRING([[[--enable-unversioned-links]]],
|
|---|
| 265 | [Installed libpng header files are placed in a versioned subdirectory]
|
|---|
| 266 | [and installed libpng library (including DLL) files are versioned.]
|
|---|
| 267 | [If this option is enabled unversioned links will be created pointing to]
|
|---|
| 268 | [the corresponding installed files. If you use libpng.pc or]
|
|---|
| 269 | [libpng-config for all builds you do not need these links, but if you]
|
|---|
| 270 | [compile programs directly they will typically #include <png.h> and]
|
|---|
| 271 | [link with -lpng; in that case you need the links.]
|
|---|
| 272 | [The links can be installed manually using 'make install-header-links']
|
|---|
| 273 | [and 'make install-library-links' and can be removed using the]
|
|---|
| 274 | [corresponding uninstall- targets. If you do enable this option every]
|
|---|
| 275 | [libpng 'make install' will recreate the links to point to the just]
|
|---|
| 276 | [installed version of libpng. The default is to create the links;]
|
|---|
| 277 | [use --disable-unversioned-links to change this]))
|
|---|
| 278 |
|
|---|
| 279 | # The AM_CONDITIONAL test is written so that the default is enabled;
|
|---|
| 280 | # --disable-unversioned-links must be given to turn the option off.
|
|---|
| 281 | AM_CONDITIONAL([DO_INSTALL_LINKS],[test "$enable_unversioned_links" != "no"])
|
|---|
| 282 |
|
|---|
| 283 | AC_ARG_ENABLE([unversioned-libpng-pc],
|
|---|
| 284 | AS_HELP_STRING([[[--enable-unversioned-libpng-pc]]],
|
|---|
| 285 | [Install the configuration file 'libpng.pc' as a link to the versioned]
|
|---|
| 286 | [version. This is done by default - use --disable-unversioned-libpng-pc]
|
|---|
| 287 | [to change this.]))
|
|---|
| 288 | AM_CONDITIONAL([DO_INSTALL_LIBPNG_PC],
|
|---|
| 289 | [test "$enable_unversioned_libpng_pc" != "no"])
|
|---|
| 290 |
|
|---|
| 291 | AC_ARG_ENABLE([unversioned-libpng-config],
|
|---|
| 292 | AS_HELP_STRING([[[--enable-unversioned-libpng-config]]],
|
|---|
| 293 | [Install the configuration file 'libpng-config' as a link to the]
|
|---|
| 294 | [versioned version. This is done by default - use]
|
|---|
| 295 | [--disable-unversioned-libpng-config to change this.]))
|
|---|
| 296 | AM_CONDITIONAL([DO_INSTALL_LIBPNG_CONFIG],
|
|---|
| 297 | [test "$enable_unversioned_libpng_config" != "no"])
|
|---|
| 298 |
|
|---|
| 299 | # HOST SPECIFIC OPTIONS
|
|---|
| 300 | # =====================
|
|---|
| 301 | #
|
|---|
| 302 | # DEFAULT
|
|---|
| 303 | # =======
|
|---|
| 304 | #
|
|---|
| 305 | AC_ARG_ENABLE([hardware-optimizations],
|
|---|
| 306 | AS_HELP_STRING([[[--enable-hardware-optimizations]]],
|
|---|
| 307 | [Enable hardware optimizations: =no/off, yes/on:]),
|
|---|
| 308 | [case "$enableval" in
|
|---|
| 309 | no|off)
|
|---|
| 310 | # disable hardware optimization on all systems:
|
|---|
| 311 | enable_arm_neon=no
|
|---|
| 312 | AC_DEFINE([PNG_ARM_NEON_OPT], [0],
|
|---|
| 313 | [Disable ARM_NEON optimizations])
|
|---|
| 314 | enable_mips_msa=no
|
|---|
| 315 | AC_DEFINE([PNG_MIPS_MSA_OPT], [0],
|
|---|
| 316 | [Disable MIPS_MSA optimizations])
|
|---|
| 317 | enable_powerpc_vsx=no
|
|---|
| 318 | AC_DEFINE([PNG_POWERPC_VSX_OPT], [0],
|
|---|
| 319 | [Disable POWERPC VSX optimizations])
|
|---|
| 320 | enable_intel_sse=no
|
|---|
| 321 | AC_DEFINE([PNG_INTEL_SSE_OPT], [0],
|
|---|
| 322 | [Disable INTEL_SSE optimizations])
|
|---|
| 323 | ;;
|
|---|
| 324 | *)
|
|---|
| 325 | # allow enabling hardware optimization on any system:
|
|---|
| 326 | case "$host_cpu" in
|
|---|
| 327 | arm*|aarch64*)
|
|---|
| 328 | enable_arm_neon=yes
|
|---|
| 329 | AC_DEFINE([PNG_ARM_NEON_OPT], [0],
|
|---|
| 330 | [Enable ARM_NEON optimizations])
|
|---|
| 331 | ;;
|
|---|
| 332 | mipsel*|mips64el*)
|
|---|
| 333 | enable_mips_msa=yes
|
|---|
| 334 | AC_DEFINE([PNG_MIPS_MSA_OPT], [0],
|
|---|
| 335 | [Enable MIPS_MSA optimizations])
|
|---|
| 336 | ;;
|
|---|
| 337 | i?86|x86_64)
|
|---|
| 338 | enable_intel_sse=yes
|
|---|
| 339 | AC_DEFINE([PNG_INTEL_SSE_OPT], [1],
|
|---|
| 340 | [Enable Intel SSE optimizations])
|
|---|
| 341 | ;;
|
|---|
| 342 | powerpc*|ppc64*)
|
|---|
| 343 | enable_powerpc_vsx=yes
|
|---|
| 344 | AC_DEFINE([PNG_POWERPC_VSX_OPT], [2],
|
|---|
| 345 | [Enable POWERPC VSX optimizations])
|
|---|
| 346 | ;;
|
|---|
| 347 | esac
|
|---|
| 348 | ;;
|
|---|
| 349 | esac])
|
|---|
| 350 |
|
|---|
| 351 | # ARM
|
|---|
| 352 | # ===
|
|---|
| 353 | #
|
|---|
| 354 | # ARM NEON (SIMD) support.
|
|---|
| 355 |
|
|---|
| 356 | AC_ARG_ENABLE([arm-neon],
|
|---|
| 357 | AS_HELP_STRING([[[--enable-arm-neon]]],
|
|---|
| 358 | [Enable ARM NEON optimizations: =no/off, check, api, yes/on:]
|
|---|
| 359 | [no/off: disable the optimizations; check: use internal checking code]
|
|---|
| 360 | [(deprecated and poorly supported); api: disable by default, enable by]
|
|---|
| 361 | [a call to png_set_option; yes/on: turn on unconditionally.]
|
|---|
| 362 | [If not specified: determined by the compiler.]),
|
|---|
| 363 | [case "$enableval" in
|
|---|
| 364 | no|off)
|
|---|
| 365 | # disable the default enabling on __ARM_NEON__ systems:
|
|---|
| 366 | AC_DEFINE([PNG_ARM_NEON_OPT], [0],
|
|---|
| 367 | [Disable ARM Neon optimizations])
|
|---|
| 368 | # Prevent inclusion of the assembler files below:
|
|---|
| 369 | enable_arm_neon=no;;
|
|---|
| 370 | check)
|
|---|
| 371 | AC_DEFINE([PNG_ARM_NEON_CHECK_SUPPORTED], [],
|
|---|
| 372 | [Check for ARM Neon support at run-time]);;
|
|---|
| 373 | api)
|
|---|
| 374 | AC_DEFINE([PNG_ARM_NEON_API_SUPPORTED], [],
|
|---|
| 375 | [Turn on ARM Neon optimizations at run-time]);;
|
|---|
| 376 | yes|on)
|
|---|
| 377 | AC_DEFINE([PNG_ARM_NEON_OPT], [2],
|
|---|
| 378 | [Enable ARM Neon optimizations])
|
|---|
| 379 | AC_MSG_WARN([--enable-arm-neon: please specify 'check' or 'api', if]
|
|---|
| 380 | [you want the optimizations unconditionally pass -mfpu=neon]
|
|---|
| 381 | [to the compiler.]);;
|
|---|
| 382 | *)
|
|---|
| 383 | AC_MSG_ERROR([--enable-arm-neon=${enable_arm_neon}: invalid value])
|
|---|
| 384 | esac])
|
|---|
| 385 |
|
|---|
| 386 | # Add ARM specific files to all builds where the host_cpu is arm ('arm*') or
|
|---|
| 387 | # where ARM optimizations were explicitly requested (this allows a fallback if a
|
|---|
| 388 | # future host CPU does not match 'arm*')
|
|---|
| 389 |
|
|---|
| 390 | AM_CONDITIONAL([PNG_ARM_NEON],
|
|---|
| 391 | [test "$enable_arm_neon" != 'no' &&
|
|---|
| 392 | case "$host_cpu" in
|
|---|
| 393 | arm*|aarch64*) :;;
|
|---|
| 394 | *) test "$enable_arm_neon" != '';;
|
|---|
| 395 | esac])
|
|---|
| 396 |
|
|---|
| 397 | # MIPS
|
|---|
| 398 | # ===
|
|---|
| 399 | #
|
|---|
| 400 | # MIPS MSA (SIMD) support.
|
|---|
| 401 |
|
|---|
| 402 | AC_ARG_ENABLE([mips-msa],
|
|---|
| 403 | AS_HELP_STRING([[[--enable-mips-msa]]],
|
|---|
| 404 | [Enable MIPS MSA optimizations: =no/off, check, api, yes/on:]
|
|---|
| 405 | [no/off: disable the optimizations; check: use internal checking code]
|
|---|
| 406 | [(deprecated and poorly supported); api: disable by default, enable by]
|
|---|
| 407 | [a call to png_set_option; yes/on: turn on unconditionally.]
|
|---|
| 408 | [If not specified: determined by the compiler.]),
|
|---|
| 409 | [case "$enableval" in
|
|---|
| 410 | no|off)
|
|---|
| 411 | # disable the default enabling on __mips_msa systems:
|
|---|
| 412 | AC_DEFINE([PNG_MIPS_MSA_OPT], [0],
|
|---|
| 413 | [Disable MIPS MSA optimizations])
|
|---|
| 414 | # Prevent inclusion of the assembler files below:
|
|---|
| 415 | enable_mips_msa=no;;
|
|---|
| 416 | check)
|
|---|
| 417 | AC_DEFINE([PNG_MIPS_MSA_CHECK_SUPPORTED], [],
|
|---|
| 418 | [Check for MIPS MSA support at run-time]);;
|
|---|
| 419 | api)
|
|---|
| 420 | AC_DEFINE([PNG_MIPS_MSA_API_SUPPORTED], [],
|
|---|
| 421 | [Turn on MIPS MSA optimizations at run-time]);;
|
|---|
| 422 | yes|on)
|
|---|
| 423 | AC_DEFINE([PNG_MIPS_MSA_OPT], [2],
|
|---|
| 424 | [Enable MIPS MSA optimizations])
|
|---|
| 425 | AC_MSG_WARN([--enable-mips-msa: please specify 'check' or 'api', if]
|
|---|
| 426 | [you want the optimizations unconditionally pass '-mmsa -mfp64']
|
|---|
| 427 | [to the compiler.]);;
|
|---|
| 428 | *)
|
|---|
| 429 | AC_MSG_ERROR([--enable-mips-msa=${enable_mips_msa}: invalid value])
|
|---|
| 430 | esac])
|
|---|
| 431 |
|
|---|
| 432 | # Add MIPS specific files to all builds where the host_cpu is mips ('mips*') or
|
|---|
| 433 | # where MIPS optimizations were explicitly requested (this allows a fallback if a
|
|---|
| 434 | # future host CPU does not match 'mips*')
|
|---|
| 435 |
|
|---|
| 436 | AM_CONDITIONAL([PNG_MIPS_MSA],
|
|---|
| 437 | [test "$enable_mips_msa" != 'no' &&
|
|---|
| 438 | case "$host_cpu" in
|
|---|
| 439 | mipsel*|mips64el*) :;;
|
|---|
| 440 | esac])
|
|---|
| 441 |
|
|---|
| 442 | # INTEL
|
|---|
| 443 | # =====
|
|---|
| 444 | #
|
|---|
| 445 | # INTEL SSE (SIMD) support.
|
|---|
| 446 |
|
|---|
| 447 | AC_ARG_ENABLE([intel-sse],
|
|---|
| 448 | AS_HELP_STRING([[[--enable-intel-sse]]],
|
|---|
| 449 | [Enable Intel SSE optimizations: =no/off, yes/on:]
|
|---|
| 450 | [no/off: disable the optimizations;]
|
|---|
| 451 | [yes/on: enable the optimizations.]
|
|---|
| 452 | [If not specified: determined by the compiler.]),
|
|---|
| 453 | [case "$enableval" in
|
|---|
| 454 | no|off)
|
|---|
| 455 | # disable the default enabling:
|
|---|
| 456 | AC_DEFINE([PNG_INTEL_SSE_OPT], [0],
|
|---|
| 457 | [Disable Intel SSE optimizations])
|
|---|
| 458 | # Prevent inclusion of the assembler files below:
|
|---|
| 459 | enable_intel_sse=no;;
|
|---|
| 460 | yes|on)
|
|---|
| 461 | AC_DEFINE([PNG_INTEL_SSE_OPT], [1],
|
|---|
| 462 | [Enable Intel SSE optimizations]);;
|
|---|
| 463 | *)
|
|---|
| 464 | AC_MSG_ERROR([--enable-intel-sse=${enable_intel_sse}: invalid value])
|
|---|
| 465 | esac])
|
|---|
| 466 |
|
|---|
| 467 | # Add Intel specific files to all builds where the host_cpu is Intel ('x86*')
|
|---|
| 468 | # or where Intel optimizations were explicitly requested (this allows a
|
|---|
| 469 | # fallback if a future host CPU does not match 'x86*')
|
|---|
| 470 | AM_CONDITIONAL([PNG_INTEL_SSE],
|
|---|
| 471 | [test "$enable_intel_sse" != 'no' &&
|
|---|
| 472 | case "$host_cpu" in
|
|---|
| 473 | i?86|x86_64) :;;
|
|---|
| 474 | *) test "$enable_intel_sse" != '';;
|
|---|
| 475 | esac])
|
|---|
| 476 |
|
|---|
| 477 | # PowerPC
|
|---|
| 478 | # ===
|
|---|
| 479 | #
|
|---|
| 480 | # PowerPC VSX (SIMD) support.
|
|---|
| 481 |
|
|---|
| 482 | AC_ARG_ENABLE([powerpc-vsx],
|
|---|
| 483 | AS_HELP_STRING([[[--enable-powerpc-vsx]]],
|
|---|
| 484 | [Enable POWERPC VSX optimizations: =no/off, check, api, yes/on:]
|
|---|
| 485 | [no/off: disable the optimizations; check: use internal checking code]
|
|---|
| 486 | [api: disable by default, enable by a call to png_set_option]
|
|---|
| 487 | [yes/on: turn on unconditionally.]
|
|---|
| 488 | [If not specified: determined by the compiler.]),
|
|---|
| 489 | [case "$enableval" in
|
|---|
| 490 | no|off)
|
|---|
| 491 | # disable the default enabling on __ppc64__ systems:
|
|---|
| 492 | AC_DEFINE([PNG_POWERPC_VSX_OPT], [0],
|
|---|
| 493 | [Disable POWERPC VSX optimizations])
|
|---|
| 494 | # Prevent inclusion of the platform specific files below:
|
|---|
| 495 | enable_powerpc_vsx=no;;
|
|---|
| 496 | check)
|
|---|
| 497 | AC_DEFINE([PNG_POWERPC_VSX_CHECK_SUPPORTED], [],
|
|---|
| 498 | [Check for POWERPC VSX support at run-time])
|
|---|
| 499 | AC_MSG_WARN([--enable-powerpc-vsx Please check contrib/powerpc/README file]
|
|---|
| 500 | [for the list of supported OSes.]);;
|
|---|
| 501 | api)
|
|---|
| 502 | AC_DEFINE([PNG_POWERPC_VSX_API_SUPPORTED], [],
|
|---|
| 503 | [Turn on POWERPC VSX optimizations at run-time]);;
|
|---|
| 504 | yes|on)
|
|---|
| 505 | AC_DEFINE([PNG_POWERPC_VSX_OPT], [2],
|
|---|
| 506 | [Enable POWERPC VSX optimizations])
|
|---|
| 507 | AC_MSG_WARN([--enable-powerpc-vsx: please specify 'check' or 'api', if]
|
|---|
| 508 | [you want the optimizations unconditionally pass '-maltivec -mvsx']
|
|---|
| 509 | [or '-mcpu=power8'to the compiler.]);;
|
|---|
| 510 | *)
|
|---|
| 511 | AC_MSG_ERROR([--enable-powerpc-vsx=${enable_powerpc_vsx}: invalid value])
|
|---|
| 512 | esac])
|
|---|
| 513 |
|
|---|
| 514 | # Add PowerPC specific files to all builds where the host_cpu is powerpc('powerpc*') or
|
|---|
| 515 | # where POWERPC optimizations were explicitly requested (this allows a fallback if a
|
|---|
| 516 | # future host CPU does not match 'powerpc*')
|
|---|
| 517 |
|
|---|
| 518 | AM_CONDITIONAL([PNG_POWERPC_VSX],
|
|---|
| 519 | [test "$enable_powerpc_vsx" != 'no' &&
|
|---|
| 520 | case "$host_cpu" in
|
|---|
| 521 | powerpc*|ppc64*) :;;
|
|---|
| 522 | esac])
|
|---|
| 523 |
|
|---|
| 524 |
|
|---|
| 525 | AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
|
|---|
| 526 |
|
|---|
| 527 | # Config files, substituting as above
|
|---|
| 528 | AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
|
|---|
| 529 | AC_CONFIG_FILES([libpng-config:libpng-config.in],
|
|---|
| 530 | [chmod +x libpng-config])
|
|---|
| 531 |
|
|---|
| 532 | AC_OUTPUT
|
|---|
