Remove modules Jamfile: it doesn't work.

Add shell script for testing modules with clang.

.github/workflows/ci.yml

@@ -134,6 +134,41 @@ jobs:
       - name: Test
         run: ../../../b2 toolset=$TOOLSET define=CI_SUPPRESS_KNOWN_ISSUES define=SLOW_COMPILER
         working-directory: ../boost-root/libs/regex/test
+  ubuntu-jammy-clang-18-modules:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: '0'
+      - uses: mstachniuk/ci-skip@v1
+        with:
+          commit-filter: '[skip ci];[ci skip];[CI SKIP];[SKIP CI];***CI SKIP***;***SKIP CI***;[windows];[Windows];[WINDOWS];[apple];[Apple];[APPLE]'
+          commit-filter-separator: ';'
+          fail-fast: true
+      - name: Add repository
+        run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
+      - name: Install packages
+        run: sudo apt install clang-18
+      - name: Checkout main boost
+        run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
+      - name: Update tools/boostdep
+        run: git submodule update --init tools/boostdep
+        working-directory: ../boost-root
+      - name: Copy files
+        run: cp -r $GITHUB_WORKSPACE/* libs/regex
+        working-directory: ../boost-root
+      - name: Install deps
+        run: python tools/boostdep/depinst/depinst.py -I example -g "--jobs 3" regex
+        working-directory: ../boost-root
+      - name: Bootstrap
+        run: ./bootstrap.sh
+        working-directory: ../boost-root
+      - name: Generate headers
+        run: ./b2 headers
+        working-directory: ../boost-root
+      - name: Test
+        run: ./test.sh ./config/clang.sh
+        working-directory: ../boost-root/libs/regex/test/module
   macos:
     runs-on: macos-latest
     strategy:

test/Jamfile.v2

@@ -110,7 +110,6 @@ run regress/$(R_SOURCE) ./noeh_test//boost_regex_noeh ../build//icu_options : :
 compile test_consolidated.cpp ;
 
 build-project ../example ;
-build-project ./module ;
 
 # `quick` target (for CI)
 run quick.cpp ../build//boost_regex ;

test/module/config/clang.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+#
+# Arguments are:
+#
+# 1) A space spearated list of source files.
+# 2) A space separated list of module source files.
+# 3) The name of the executable to build.
+#
+# Environment variables used are:
+#
+# CXX - the name of the clang compiler, defaults to clang++.
+# CXXFLAGS - flags to pass to the build, defaults to "-std=c++20 -g".
+# LINKFLAGS - flags to pass to the link stage, defaults to "".
+# LIBRARIES - Additional libraries to add to the end of the link command line, defaults to "".
+#
+
+: ${CXX:="clang++"}
+: ${CXXFLAGS:="-std=c++20 -g"}
+
+module_usage=""
+
+for module_file in $2; do
+module_base="${module_file%.*}"
+$CXX $CXXFLAGS -x c++-module $module_file --precompile -o $module_base.pcm || exit 1
+
+# grab the name of the exported module from the source:
+cxx_module_name=$(grep -E "export[ ]+module[ ]+([^; ]+)" $module_file | sed -r "s/export[ ]+module[ ]+([^; ]+)[ ]*;/\1/")
+
+# Build the command line for module usage:
+module_usage="$module_usage -fmodule-file=$cxx_module_name=$module_base.pcm $module_base.pcm"
+
+done
+
+# Build the actual executable:
+$CXX $CXXFLAGS $1 $module_usage -o $3 || exit 1

test/module/test.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+#
+# Builds all of the tests in this folder using the supplied compiler-specific script in $1
+#
+
+for file in *.cpp; do
+
+CXXFLAGS="-std=c++20 -g -I ../../../.." $1 $file ../../module/regex.cxx "${file%.*}.exe" || exit 1
+
+done