Adjust build.jam to make regex header only.

.github/workflows/ci.yml

@@ -266,7 +266,7 @@ jobs:
         run: ../../../b2 toolset=${{ matrix.toolset }} cxxstd=${{ matrix.standard }}
         working-directory: ../boost-root/libs/regex/test
   windows_gcc:
-    runs-on: windows-2019
+    runs-on: windows-latest
     defaults:
       run:
         shell: cmd
@@ -312,102 +312,8 @@ jobs:
       - name: Test
         run: ..\..\..\b2 --hash %ARGS%
         working-directory: ../boost-root/libs/regex/test
-  windows_msvc_14_0:
-    runs-on: windows-2019
-    defaults:
-      run:
-        shell: cmd
-    env:
-      ARGS: toolset=${{ matrix.toolset }} address-model=64 cxxstd=${{ matrix.standard }}
-    strategy:
-      fail-fast: false
-      matrix:
-        toolset: [ msvc-14.0 ]
-        standard: [ 14, 17 ]
-    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***;[apple];[Apple];[APPLE];[linux];[Linux];[LINUX]'
-          commit-filter-separator: ';'
-          fail-fast: true
-      - 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: xcopy /s /e /q %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
-        working-directory: ../boost-root
-      - name: Generate headers
-        run: b2 headers
-        working-directory: ../boost-root
-      - name: Config info install
-        run: ..\..\..\b2 config_info_travis_install %ARGS%
-        working-directory: ../boost-root/libs/config/test
-      - name: Config info
-        run: config_info_travis
-        working-directory: ../boost-root/libs/config/test
-      - name: Test
-        run: ..\..\..\b2 --hash %ARGS%
-        working-directory: ../boost-root/libs/regex/test
-  windows_msvc_14_2:
-    runs-on: windows-2019
-    defaults:
-      run:
-        shell: cmd
-    env:
-      ARGS: toolset=${{ matrix.toolset }} address-model=64 cxxstd=${{ matrix.standard }}
-    strategy:
-      fail-fast: false
-      matrix:
-        toolset: [ msvc-14.2 ]
-        standard: [ 14, 17, latest ]
-    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***;[apple];[Apple];[APPLE];[linux];[Linux];[LINUX]'
-          commit-filter-separator: ';'
-          fail-fast: true
-      - 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: xcopy /s /e /q %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
-        working-directory: ../boost-root
-      - name: Generate headers
-        run: b2 headers
-        working-directory: ../boost-root
-      - name: Config info install
-        run: ..\..\..\b2 config_info_travis_install %ARGS%
-        working-directory: ../boost-root/libs/config/test
-      - name: Config info
-        run: config_info_travis
-        working-directory: ../boost-root/libs/config/test
-      - name: Test
-        run: ..\..\..\b2 --hash %ARGS%
-        working-directory: ../boost-root/libs/regex/test
   windows_msvc_14_3:
-    runs-on: windows-2022
+    runs-on: windows-2025
     defaults:
       run:
         shell: cmd
@@ -460,7 +366,7 @@ jobs:
         run: msvc_test.bat
         working-directory: ../boost-root/libs/regex/test/module
   ubuntu-cmake-install:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
     steps:
@@ -492,7 +398,7 @@ jobs:
          cmake --build .
          cmake --build . --target check
   ubuntu-cmake-check:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
     steps:

build.jam

@@ -20,11 +20,12 @@ project /boost/regex
     ;
 
 explicit
-    [ alias boost_regex : build//boost_regex ]
-    [ alias all : boost_regex example test ]
+    [ alias boost_regex : : : : <library>$(boost_dependencies) ]
+    [ alias boost_regex_old : build//boost_regex ]
+    [ alias all : boost_regex boost_regex_old example test ]
     ;
 
 call-if : boost-library regex
-    : install boost_regex
+    : install boost_regex_old
     ;
 

example/Jamfile.v2

@@ -5,7 +5,7 @@
 
 project
     : requirements
-      <library>/boost/regex//boost_regex
+      <library>/boost/regex//boost_regex_old
       <library>/boost/timer//boost_timer
       <threading>multi
       <link>shared:<define>BOOST_REGEX_DYN_LINK=1

test/Jamfile.v2

@@ -5,7 +5,7 @@
 
 project
     : requirements
-      <library>/boost/regex//boost_regex
+      <library>/boost/regex//boost_regex_old
       <library>/boost/detail//boost_detail
       <threading>multi
       <link>shared:<define>BOOST_REGEX_DYN_LINK=1