Add tests with musl libc.

.github/workflows/ci.yml

@@ -104,6 +104,17 @@ jobs:
 #    - uses: actions/checkout@v3
 #    - name: Run tests
 #      run: scripts/travis.sh
+  musl:
+    runs-on: ubuntu-latest
+    env:
+      CC: musl-gcc
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install deps
+      run: sudo apt-get update && sudo apt-get install musl-tools
+    - name: Run tests
+      run: scripts/travis.sh
+  # TODO: test on llvm-libc when it supports dlfcn
   x86:
     runs-on: ubuntu-latest
     env:

scripts/travis.sh

@@ -23,7 +23,7 @@ tests/basic/run.sh $ARCH
 tests/exceptions/run.sh $ARCH
 tests/data-warnings/run.sh $ARCH
 tests/vtables/run.sh $ARCH
-if test -z "$ARCH"; then
+if test -z "$ARCH" && ! echo "${CC:-}" | grep -q musl-gcc; then
   # TODO: enable for other targets
   tests/ld/run.sh
 fi
@@ -34,9 +34,11 @@ fi
 tests/hidden/run.sh $ARCH
 tests/verbose/run.sh $ARCH
 tests/no_dlopen/run.sh $ARCH
-tests/multiple-dlopens/run.sh $ARCH
-tests/multiple-dlopens-2/run.sh $ARCH
-tests/multiple-dlopens-3/run.sh $ARCH
+if ! echo "${CC:-}" | grep -q musl-gcc; then  # Musl does not implement dlclose
+  tests/multiple-dlopens/run.sh $ARCH
+  tests/multiple-dlopens-2/run.sh $ARCH
+  tests/multiple-dlopens-3/run.sh $ARCH
+fi
 if ! echo "$ARCH" | grep -q powerpc; then
   tests/many-functions/run.sh $ARCH
 fi
@@ -47,3 +49,5 @@ if ! echo "$ARCH" | grep -q 'powerpc\|mips\|riscv'; then
 fi
 tests/thread/run.sh $ARCH
 tests/thread-2/run.sh $ARCH
+
+echo 'All tests passed'

tests/common.sh

@@ -1,3 +1,10 @@
+# Copyright 2019-2025 Yury Gribov
+#
+# The MIT License (MIT)
+# 
+# Use of this source code is governed by MIT license that can be
+# found in the LICENSE.txt file.
+
 if test -n "${TRAVIS:-}"; then
   set -x
 fi
@@ -94,6 +101,7 @@ fi
 
 # Do not bother with non-native targets
 if test -z "$INTERP" \
+    && ! echo "$CC" | grep -q musl-gcc \
     && uname | grep -q Linux \
     && echo 'int main() {}' | $CC $CFLAGS -fsanitize=thread -x c - -o /dev/null 2> /dev/null; then
   TSAN_AVAILABLE=1