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configure.ac: Rework MESA_LLVM and LLVM detection 

Set FOUND_LLVM only when LLVM is present (checking for exact version/etc
is deferred) and use enable-gallium-llvm to indicate the global LLVM
status.

Renaming the latter is not appropriate for stable patches, so we'll
address it with a later commit.

Loosely based on work by Tobias.

v2: Check FOUND_LLVM if enable_gallium_llvm is set.

Cc: Dave Airlie <airlied@redhat.com>
Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tobias Droste <tdroste@gmx.de>
This commit is contained in:
Tobias Droste 2017-01-28 14:56:57 +01:00 committed by Emil Velikov
parent 5869a7db75
commit 04377cbdcf
1 changed files with 15 additions and 12 deletions
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27
configure.ac
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@ -960,9 +960,9 @@ llvm_set_environment_variables() {
fi
DEFINES="${DEFINES} -DHAVE_LLVM=0x0$LLVM_VERSION_INT -DMESA_LLVM_VERSION_PATCH=$LLVM_VERSION_PATCH"
MESA_LLVM=1
FOUND_LLVM=yes
else
MESA_LLVM=0
FOUND_LLVM=no
LLVM_VERSION_INT=0
fi
}
@ -974,10 +974,6 @@ require_llvm() {
}
llvm_require_version() {
if test "x$MESA_LLVM" = x0; then
AC_MSG_ERROR([LLVM $1 or newer is required for $2])
return
fi
require_llvm $2
llvm_target_version_major=`echo $1 | cut -d. -f1 | egrep -o '^[[0-9]]+'`
@ -1735,6 +1731,10 @@ fi
dnl
dnl Gallium LLVM
dnl
dnl With follow-up commits we'll rework --enable-gallium-llvm to --enable-llvm
dnl Since that is too invasive to stable, do the more conservative thing for now
dnl and consider it as a global LLVM toggle.
dnl
AC_ARG_ENABLE([gallium-llvm],
[AS_HELP_STRING([--enable-gallium-llvm],
[build gallium LLVM support @<:@default=enabled on x86/x86_64@:>@])],
@ -1747,6 +1747,10 @@ if test "x$enable_gallium_llvm" = xauto; then
esac
fi
if test "x$enable_gallium_llvm" = xyes -a "x$FOUND_LLVM" = xno; then
AC_MSG_ERROR([--enable-gallium-llvm selected but llvm-config is not found])
fi
#
# Vulkan driver configuration
#
@ -2334,7 +2338,7 @@ if test -n "$with_gallium_drivers"; then
;;
xswrast)
HAVE_GALLIUM_SOFTPIPE=yes
if test "x$MESA_LLVM" = x1 && test "x$enable_gallium_llvm" == "xyes"; then
if test "x$enable_gallium_llvm" = xyes; then
HAVE_GALLIUM_LLVMPIPE=yes
fi
;;
@ -2398,7 +2402,7 @@ dnl by calling llvm-config --libs ${DRIVER_LLVM_COMPONENTS}, but
dnl this was causing the same libraries to be appear multiple times
dnl in LLVM_LIBS.
if test "x$MESA_LLVM" != x0; then
if test "x$enable_gallium_llvm" = xyes; then
if ! $LLVM_CONFIG --libs ${LLVM_COMPONENTS} >/dev/null; then
AC_MSG_ERROR([Calling ${LLVM_CONFIG} failed])
@ -2499,8 +2503,7 @@ AM_CONDITIONAL(NEED_RADEON_DRM_WINSYS, test "x$HAVE_GALLIUM_R300" = xyes -o \
AM_CONDITIONAL(NEED_WINSYS_XLIB, test "x$enable_glx" = xgallium-xlib)
AM_CONDITIONAL(NEED_RADEON_LLVM, test x$NEED_RADEON_LLVM = xyes)
AM_CONDITIONAL(HAVE_GALLIUM_COMPUTE, test x$enable_opencl = xyes)
AM_CONDITIONAL(HAVE_GALLIUM_LLVM, test "x$MESA_LLVM" = x1 -a \
"x$enable_gallium_llvm" = xyes)
AM_CONDITIONAL(HAVE_GALLIUM_LLVM, test "x$enable_gallium_llvm" = xyes)
AM_CONDITIONAL(USE_VC4_SIMULATOR, test x$USE_VC4_SIMULATOR = xyes)
AM_CONDITIONAL(HAVE_LIBDRM, test "x$have_libdrm" = xyes)
@ -2780,7 +2783,7 @@ else
fi
echo ""
if test "x$MESA_LLVM" = x1; then
if test "x$enable_gallium_llvm" = xyes; then
echo " llvm: yes"
echo " llvm-config: $LLVM_CONFIG"
echo " llvm-version: $LLVM_VERSION"
@ -2827,7 +2830,7 @@ echo " CFLAGS: $cflags"
echo " CXXFLAGS: $cxxflags"
echo " Macros: $defines"
echo ""
if test "x$MESA_LLVM" = x1; then
if test "x$enable_gallium_llvm" = xyes; then
echo " LLVM_CFLAGS: $LLVM_CFLAGS"
echo " LLVM_CXXFLAGS: $LLVM_CXXFLAGS"
echo " LLVM_CPPFLAGS: $LLVM_CPPFLAGS"