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Compile compiler-rt with MSVC
Signed-off-by: Peter Atashian <retep998@gmail.com>
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‎configure‎

Lines changed: 168 additions & 164 deletions
Original file line numberDiff line numberDiff line change
@@ -945,162 +945,6 @@ then
945945
fi
946946
fi
947947

948-
# If the clang isn't already enabled, check for GCC, and if it is missing, turn
949-
# on clang as a backup.
950-
if [ -z "$CFG_ENABLE_CLANG" ]
951-
then
952-
CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
953-
if [ $? -ne 0 ]
954-
then
955-
step_msg "GCC not installed, will try using Clang"
956-
CFG_ENABLE_CLANG=1
957-
fi
958-
fi
959-
960-
# Okay, at this point, we have made up our minds about whether we are
961-
# going to force CFG_ENABLE_CLANG or not; save the setting if so.
962-
if [ -n "$CFG_ENABLE_CLANG" ]
963-
then
964-
putvar CFG_ENABLE_CLANG
965-
fi
966-
967-
# Same with jemalloc. save the setting here.
968-
if [ -n "$CFG_DISABLE_JEMALLOC" ]
969-
then
970-
putvar CFG_DISABLE_JEMALLOC
971-
fi
972-
973-
if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
974-
then
975-
step_msg "using custom LLVM at $CFG_LLVM_ROOT"
976-
977-
LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
978-
LLVM_VERSION=$($LLVM_CONFIG --version)
979-
980-
case $LLVM_VERSION in
981-
(3.[5-8]*)
982-
msg "found ok version of LLVM: $LLVM_VERSION"
983-
;;
984-
(*)
985-
err "bad LLVM version: $LLVM_VERSION, need >=3.5"
986-
;;
987-
esac
988-
fi
989-
990-
# Even when the user overrides the choice of CC, still try to detect
991-
# clang to disable some clang-specific warnings. We here draw a
992-
# distinction between:
993-
#
994-
# CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
995-
# CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
996-
#
997-
# This distinction is important because there are some safeguards we
998-
# would prefer to skip when merely CFG_USING_CLANG is set; but when
999-
# CFG_ENABLE_CLANG is set, that indicates that we are opting into
1000-
# running such safeguards.
1001-
1002-
if [ -n "$CC" ]
1003-
then
1004-
msg "skipping compiler inference steps; using provided CC=$CC"
1005-
CFG_CC="$CC"
1006-
1007-
CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
1008-
if [ $? -eq 0 ]
1009-
then
1010-
step_msg "note, user-provided CC looks like clang; CC=$CC."
1011-
CFG_USING_CLANG=1
1012-
putvar CFG_USING_CLANG
1013-
fi
1014-
else
1015-
if [ -n "$CFG_ENABLE_CLANG" ]
1016-
then
1017-
if [ -z "$CFG_CLANG" ]
1018-
then
1019-
err "clang requested but not found"
1020-
fi
1021-
CFG_CC="$CFG_CLANG"
1022-
CFG_USING_CLANG=1
1023-
putvar CFG_USING_CLANG
1024-
else
1025-
CFG_CC="gcc"
1026-
fi
1027-
fi
1028-
1029-
if [ -n "$CFG_ENABLE_CLANG" ]
1030-
then
1031-
case "$CC" in
1032-
(''|*clang)
1033-
CFG_CLANG_REPORTED_VERSION=$($CFG_CC --version | grep version)
1034-
1035-
if echo $CFG_CLANG_REPORTED_VERSION | grep -q "(based on LLVM "; then
1036-
CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*(based on LLVM \(.*\))/\1/')
1037-
elif echo $CFG_CLANG_REPORTED_VERSION | grep -q "Apple LLVM"; then
1038-
CFG_OSX_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1039-
else
1040-
CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1041-
fi
1042-
1043-
if [ -n "$CFG_OSX_CLANG_VERSION" ]
1044-
then
1045-
case $CFG_OSX_CLANG_VERSION in
1046-
(7.0*)
1047-
step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
1048-
;;
1049-
(*)
1050-
err "bad APPLE CLANG version: $CFG_OSX_CLANG_VERSION, need >=7.0"
1051-
;;
1052-
esac
1053-
else
1054-
case $CFG_CLANG_VERSION in
1055-
(3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8*)
1056-
step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
1057-
;;
1058-
(*)
1059-
err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
1060-
;;
1061-
esac
1062-
fi
1063-
1064-
if [ -z "$CC" ]
1065-
then
1066-
CFG_CC="clang"
1067-
CFG_CXX="clang++"
1068-
fi
1069-
esac
1070-
fi
1071-
1072-
if [ -n "$CFG_ENABLE_CCACHE" ]
1073-
then
1074-
if [ -z "$CFG_CCACHE" ]
1075-
then
1076-
err "ccache requested but not found"
1077-
fi
1078-
1079-
CFG_CC="ccache $CFG_CC"
1080-
fi
1081-
1082-
if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1083-
then
1084-
err "either clang or gcc is required"
1085-
fi
1086-
1087-
# All safeguards based on $CFG_ENABLE_CLANG should occur before this
1088-
# point in the script; after this point, script logic should inspect
1089-
# $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1090-
1091-
# Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS}
1092-
envopt CC
1093-
envopt CXX
1094-
envopt CPP
1095-
envopt CFLAGS
1096-
envopt CXXFLAGS
1097-
1098-
# stdc++ name in use
1099-
# used to manage non-standard name (on OpenBSD for example)
1100-
program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1101-
CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1102-
putvar CFG_STDCPP_NAME
1103-
1104948
# a little post-processing of various config values
1105949
CFG_PREFIX=${CFG_PREFIX%/}
1106950
CFG_MANDIR=${CFG_MANDIR%/}
@@ -1214,15 +1058,18 @@ $ pacman -R python2 && pacman -S mingw-w64-x86_64-python2
12141058
"
12151059
fi
12161060

1217-
# MSVC requires cmake because that's how we're going to build LLVM
1218-
probe_need CFG_CMAKE cmake
1219-
1220-
# There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1221-
# The Cygwin build does not have generators for Visual Studio, so
1222-
# detect that here and error.
1223-
if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1061+
# Only probe for cmake if we actually need to build LLVM
1062+
if [ -z $CFG_LLVM_ROOT ]
12241063
then
1225-
err "
1064+
# MSVC requires cmake because that's how we're going to build LLVM
1065+
probe_need CFG_CMAKE cmake
1066+
1067+
# There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1068+
# The Cygwin build does not have generators for Visual Studio, so
1069+
# detect that here and error.
1070+
if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1071+
then
1072+
err "
12261073
12271074
cmake does not support Visual Studio generators.
12281075
@@ -1235,6 +1082,7 @@ package instead of cmake:
12351082
12361083
$ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
12371084
"
1085+
fi
12381086
fi
12391087

12401088
# Use the REG program to figure out where VS is installed
@@ -1300,6 +1148,162 @@ $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
13001148
esac
13011149
done
13021150

1151+
# If we're not targetting MSVC, and clang isn't already enabled, check for GCC,
1152+
# and if it is missing, turn on clang as a backup.
1153+
if [ -z "$CFG_MSVC_ROOT" -a -z "$CFG_ENABLE_CLANG" ]
1154+
then
1155+
CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
1156+
if [ $? -ne 0 ]
1157+
then
1158+
step_msg "GCC not installed, will try using Clang"
1159+
CFG_ENABLE_CLANG=1
1160+
fi
1161+
fi
1162+
1163+
# Okay, at this point, we have made up our minds about whether we are
1164+
# going to force CFG_ENABLE_CLANG or not; save the setting if so.
1165+
if [ -n "$CFG_ENABLE_CLANG" ]
1166+
then
1167+
putvar CFG_ENABLE_CLANG
1168+
fi
1169+
1170+
# Same with jemalloc. save the setting here.
1171+
if [ -n "$CFG_DISABLE_JEMALLOC" ]
1172+
then
1173+
putvar CFG_DISABLE_JEMALLOC
1174+
fi
1175+
1176+
if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
1177+
then
1178+
step_msg "using custom LLVM at $CFG_LLVM_ROOT"
1179+
1180+
LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
1181+
LLVM_VERSION=$($LLVM_CONFIG --version)
1182+
1183+
case $LLVM_VERSION in
1184+
(3.[5-8]*)
1185+
msg "found ok version of LLVM: $LLVM_VERSION"
1186+
;;
1187+
(*)
1188+
err "bad LLVM version: $LLVM_VERSION, need >=3.5"
1189+
;;
1190+
esac
1191+
fi
1192+
1193+
# Even when the user overrides the choice of CC, still try to detect
1194+
# clang to disable some clang-specific warnings. We here draw a
1195+
# distinction between:
1196+
#
1197+
# CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
1198+
# CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
1199+
#
1200+
# This distinction is important because there are some safeguards we
1201+
# would prefer to skip when merely CFG_USING_CLANG is set; but when
1202+
# CFG_ENABLE_CLANG is set, that indicates that we are opting into
1203+
# running such safeguards.
1204+
1205+
if [ -n "$CC" ]
1206+
then
1207+
msg "skipping compiler inference steps; using provided CC=$CC"
1208+
CFG_CC="$CC"
1209+
1210+
CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
1211+
if [ $? -eq 0 ]
1212+
then
1213+
step_msg "note, user-provided CC looks like clang; CC=$CC."
1214+
CFG_USING_CLANG=1
1215+
putvar CFG_USING_CLANG
1216+
fi
1217+
else
1218+
if [ -n "$CFG_ENABLE_CLANG" ]
1219+
then
1220+
if [ -z "$CFG_CLANG" ]
1221+
then
1222+
err "clang requested but not found"
1223+
fi
1224+
CFG_CC="$CFG_CLANG"
1225+
CFG_USING_CLANG=1
1226+
putvar CFG_USING_CLANG
1227+
else
1228+
CFG_CC="gcc"
1229+
fi
1230+
fi
1231+
1232+
if [ -n "$CFG_ENABLE_CLANG" ]
1233+
then
1234+
case "$CC" in
1235+
(''|*clang)
1236+
CFG_CLANG_REPORTED_VERSION=$($CFG_CC --version | grep version)
1237+
1238+
if echo $CFG_CLANG_REPORTED_VERSION | grep -q "(based on LLVM "; then
1239+
CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*(based on LLVM \(.*\))/\1/')
1240+
elif echo $CFG_CLANG_REPORTED_VERSION | grep -q "Apple LLVM"; then
1241+
CFG_OSX_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1242+
else
1243+
CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1244+
fi
1245+
1246+
if [ -n "$CFG_OSX_CLANG_VERSION" ]
1247+
then
1248+
case $CFG_OSX_CLANG_VERSION in
1249+
(7.0*)
1250+
step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
1251+
;;
1252+
(*)
1253+
err "bad APPLE CLANG version: $CFG_OSX_CLANG_VERSION, need >=7.0"
1254+
;;
1255+
esac
1256+
else
1257+
case $CFG_CLANG_VERSION in
1258+
(3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8*)
1259+
step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
1260+
;;
1261+
(*)
1262+
err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
1263+
;;
1264+
esac
1265+
fi
1266+
1267+
if [ -z "$CC" ]
1268+
then
1269+
CFG_CC="clang"
1270+
CFG_CXX="clang++"
1271+
fi
1272+
esac
1273+
fi
1274+
1275+
if [ -n "$CFG_ENABLE_CCACHE" ]
1276+
then
1277+
if [ -z "$CFG_CCACHE" ]
1278+
then
1279+
err "ccache requested but not found"
1280+
fi
1281+
1282+
CFG_CC="ccache $CFG_CC"
1283+
fi
1284+
1285+
if [ -z "$CFG_MSVC_ROOT" -a -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1286+
then
1287+
err "either clang or gcc is required"
1288+
fi
1289+
1290+
# All safeguards based on $CFG_ENABLE_CLANG should occur before this
1291+
# point in the script; after this point, script logic should inspect
1292+
# $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1293+
1294+
# Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS}
1295+
envopt CC
1296+
envopt CXX
1297+
envopt CPP
1298+
envopt CFLAGS
1299+
envopt CXXFLAGS
1300+
1301+
# stdc++ name in use
1302+
# used to manage non-standard name (on OpenBSD for example)
1303+
program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1304+
CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1305+
putvar CFG_STDCPP_NAME
1306+
13031307
if [ -n "$CFG_PERF" ]
13041308
then
13051309
HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`

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