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Make stb_image only use SSE2 on x86_64, or when an override has been set (fixes #1173)

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Turns out, this is a gcc bug: detecting sse2 support cannot be done in shared
libraries. For now we'll assume 32-bit x86 builds are intended to also run on
devices without SSE2 (how old!). In the future we might decide we only support
machines that support SSE2, if we secretly don't already.
This commit is contained in:
Bart van Strien
2016-10-25 15:21:31 +02:00
parent ec7565176e
commit 7a6e626c74
2 changed files with 17 additions and 5 deletions
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platform/unix/configure.ac
+6
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@@ -36,6 +36,12 @@ AS_VAR_IF([enable_osx], [no], [], #else
AC_SUBST([LDFLAGS], ["${LDFLAGS} -framework CoreFoundation -framework Cocoa"])
AC_SUBST([CPPFLAGS], ["${CPPFLAGS} -I../platform/macosx"]))
# stb_image sse2 override (https://github.com/nothings/stb/issues/280)
AC_ARG_ENABLE([stbi-sse2-override],
AC_HELP_STRING([--enable-stbi-sse2-override], [Force stb_image SSE2 support]), [], [enable_stbi_sse2_override=no])
AS_VAR_IF([enable_stbi_sse2_override], [no], [], #else
AC_SUBST([CPPFLAGS], ["${CPPFLAGS} -DLOVE_STBI_SSE2_OVERRIDE"]))
# --with-lua and --with-luaversion
AC_ARG_WITH([lua], [AS_HELP_STRING([--with-lua], [Select the lua implementation])],
[], [with_lua=luajit])