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llvm-mingw/build-libcxx.sh
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Martin Storsjö 972b3b2725 Wipe the cmake cache before rerunning cmake
When rebuilding in an already built directory, cmake does use
the cache file, containing what variables were set to previously.
When changing build configuration (building with a different prefix,
or changing build configurations) this can often result in failed
cmake runs.

Wipe the cache (and the rest of the cmake temp files) by default.
This makes sure that the full cmake configuration is run each time
when running the build scripts, just like it does the first time.
(This doesn't remove the build artifacts; if nothing of significance
has changed, ninja would still reuse old built files.)

By setting the env variable NO_RECONF, this behaviour can be skipped,
rerunning cmake without wiping the cache inbetween. (For cases where
the user knows that the configuration hasn't changed since the last
build, this can speed up the cmake execution time a bit.)
2022-10-01 13:29:15 +03:00

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#!/bin/sh
#
# Copyright (c) 2018 Martin Storsjo
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
set -e
BUILD_STATIC=ON
BUILD_SHARED=ON
CFGUARD_CFLAGS=
while [ $# -gt 0 ]; do
if [ "$1" = "--disable-shared" ]; then
BUILD_SHARED=OFF
elif [ "$1" = "--enable-shared" ]; then
BUILD_SHARED=ON
elif [ "$1" = "--disable-static" ]; then
BUILD_STATIC=OFF
elif [ "$1" = "--enable-static" ]; then
BUILD_STATIC=ON
elif [ "$1" = "--enable-cfguard" ]; then
CFGUARD_CFLAGS="-mguard=cf"
elif [ "$1" = "--disable-cfguard" ]; then
CFGUARD_CFLAGS=
else
PREFIX="$1"
fi
shift
done
if [ -z "$PREFIX" ]; then
echo "$0 [--disable-shared] [--disable-static] [--enable-cfguard|--disable-cfguard] dest"
exit 1
fi
mkdir -p "$PREFIX"
PREFIX="$(cd "$PREFIX" && pwd)"
export PATH="$PREFIX/bin:$PATH"
: ${ARCHS:=${TOOLCHAIN_ARCHS-i686 x86_64 armv7 aarch64}}
if [ ! -d llvm-project/libunwind ] || [ -n "$SYNC" ]; then
CHECKOUT_ONLY=1 ./build-llvm.sh
fi
cd llvm-project
LLVM_PATH="$(pwd)/llvm"
cd runtimes
if command -v ninja >/dev/null; then
CMAKE_GENERATOR="Ninja"
NINJA=1
BUILDCMD=ninja
else
: ${CORES:=$(nproc 2>/dev/null)}
: ${CORES:=$(sysctl -n hw.ncpu 2>/dev/null)}
: ${CORES:=4}
case $(uname) in
MINGW*)
CMAKE_GENERATOR="MSYS Makefiles"
;;
*)
;;
esac
BUILDCMD=make
fi
for arch in $ARCHS; do
[ -z "$CLEAN" ] || rm -rf build-$arch
mkdir -p build-$arch
cd build-$arch
[ -n "$NO_RECONF" ] || rm -rf CMake*
cmake \
${CMAKE_GENERATOR+-G} "$CMAKE_GENERATOR" \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX="$PREFIX/$arch-w64-mingw32" \
-DCMAKE_C_COMPILER=$arch-w64-mingw32-clang \
-DCMAKE_CXX_COMPILER=$arch-w64-mingw32-clang++ \
-DCMAKE_CXX_COMPILER_TARGET=$arch-w64-windows-gnu \
-DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_C_COMPILER_WORKS=TRUE \
-DCMAKE_CXX_COMPILER_WORKS=TRUE \
-DLLVM_PATH="$LLVM_PATH" \
-DCMAKE_AR="$PREFIX/bin/llvm-ar" \
-DCMAKE_RANLIB="$PREFIX/bin/llvm-ranlib" \
-DLLVM_ENABLE_RUNTIMES="libunwind;libcxxabi;libcxx" \
-DLIBUNWIND_USE_COMPILER_RT=TRUE \
-DLIBUNWIND_ENABLE_SHARED=$BUILD_SHARED \
-DLIBUNWIND_ENABLE_STATIC=$BUILD_STATIC \
-DLIBCXX_USE_COMPILER_RT=ON \
-DLIBCXX_ENABLE_SHARED=$BUILD_SHARED \
-DLIBCXX_ENABLE_STATIC=$BUILD_STATIC \
-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=TRUE \
-DLIBCXX_CXX_ABI=libcxxabi \
-DLIBCXX_LIBDIR_SUFFIX="" \
-DLIBCXX_INCLUDE_TESTS=FALSE \
-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=FALSE \
-DLIBCXXABI_USE_COMPILER_RT=ON \
-DLIBCXXABI_USE_LLVM_UNWINDER=ON \
-DLIBCXXABI_ENABLE_SHARED=OFF \
-DLIBCXXABI_LIBDIR_SUFFIX="" \
-DCMAKE_C_FLAGS_INIT="$CFGUARD_CFLAGS" \
-DCMAKE_CXX_FLAGS_INIT="$CFGUARD_CFLAGS" \
..
$BUILDCMD ${CORES+-j$CORES}
$BUILDCMD install
cd ..
done