Revert "update pahole and elfutils (#899)"

This reverts commit 8b74dfc.

update_compilers/install_binaries.sh

@@ -8,40 +8,47 @@ DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
 #########################
 # pahole
-PAHOLE_INSTALL_DIR=$OPT/pahole
-
-## install elfutils for libelf and libdwarf
-ELFUTILS_VERSION=0.188
-rm -Rf /tmp/elfutils-$ELFUTILS_VERSION
-fetch https://sourceware.org/elfutils/ftp/$ELFUTILS_VERSION/elfutils-$ELFUTILS_VERSION.tar.bz2 | tar jxf - -C /tmp/
-pushd /tmp/elfutils-$ELFUTILS_VERSION
-./configure --prefix="$PAHOLE_INSTALL_DIR" --program-prefix="eu-" --enable-deterministic-archives --disable-debuginfod --disable-libdebuginfod
-make "-j$(nproc)"
-make install
-popd
-rm -Rf /tmp/elfutils-$ELFUTILS_VERSION
-
-## cleanup before build
-PAHOLE_BUILD_DIR=/tmp/build/pahole
-rm -rf $PAHOLE_BUILD_DIR
-mkdir -p $PAHOLE_BUILD_DIR
-pushd $PAHOLE_BUILD_DIR
-
-## download and install
-git clone --branch master --single-branch -q https://git.kernel.org/pub/scm/devel/pahole/pahole.git pahole
-pushd pahole
-git submodule sync
-git submodule update --init
-"${OPT}/cmake/bin/cmake" \
-    -D CMAKE_INSTALL_PREFIX:PATH="$PAHOLE_INSTALL_DIR" \
-    -D__LIB=lib \
-    -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=TRUE \
-    .
-make "-j$(nproc)"
-make install
-popd
-popd
-rm -rf $PAHOLE_BUILD_DIR
+
+TARGET_PAHOLE_VERSION=v1.19
+CURRENT_PAHOLE_VERSION=""
+if [[ -f "${OPT}/pahole/bin/pahole" ]]; then
+    CURRENT_PAHOLE_VERSION=$("${OPT}/pahole/bin/pahole" --version)
+fi
+
+if [[ "$TARGET_PAHOLE_VERSION" != "$CURRENT_PAHOLE_VERSION" ]]; then
+    rm -Rf "${OPT}/pahole"
+    mkdir -p "${OPT}/pahole"
+
+    mkdir -p /tmp/build
+    pushd /tmp/build
+
+    # Install elfutils for libelf and libdwarf
+    fetch https://sourceware.org/elfutils/ftp/0.182/elfutils-0.182.tar.bz2 | tar jxf -
+    pushd elfutils-0.182
+    ./configure --prefix=/opt/compiler-explorer/pahole --program-prefix="eu-" --enable-deterministic-archives --disable-debuginfod --disable-libdebuginfod
+    make "-j$(nproc)"
+    make install
+    popd
+
+    rm -Rf /tmp/build/pahole
+
+    git clone -q https://git.kernel.org/pub/scm/devel/pahole/pahole.git pahole
+    git -C pahole checkout v1.19
+    git -C pahole submodule sync
+    git -C pahole submodule update --init
+    pushd pahole
+    "${OPT}/cmake/bin/cmake" \
+        -D CMAKE_INSTALL_PREFIX:PATH="${OPT}/pahole" \
+        -D__LIB=lib \
+        -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=TRUE \
+        .
+    make "-j$(nproc)"
+    make install
+    popd
+
+    popd
+    rm -rf /tmp/build
+fi
 
 #########################
 # x86-to-6502 old version