From defd422ec33689a33df18b897f41d1a792557d58 Mon Sep 17 00:00:00 2001
From: Joel Anderson <joelanderson333@gmail.com>
Date: Sat, 30 Sep 2023 21:22:27 -0400
Subject: [PATCH] build examples with single file as well

---
 .github/workflows/linux.yml   | 42 +++++++++++++++++++++++++++++++++++
 CMakeLists.txt                | 12 +++++-----
 tools/cmake/example.cmake     | 30 +++++++++++++++++++++++++
 tools/cmake/single_file.cmake | 12 ++++++++--
 4 files changed, 89 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index f8bb50208..13197c2f2 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -198,6 +198,48 @@ jobs:
         run: |
           gcc docs/examples/basic/basic_example.c -lstumpless -o basic_example
           ./basic_example
+  linux-release-single-file:
+    name: "linux, release, single-file library"
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: actions/checkout@v3
+      - name: Configure
+        run: |
+          cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_SINGLE_FILE=ON .
+      - name: Build
+        run: |
+          make all
+      - name: Test
+        run: |
+          make check
+          if grep "DEPRECATED" Testing/Temporary/LastTest.log; then exit 1; fi
+      - name: Privileged Tests
+        run: |
+          sudo ./function-test-tcp4
+          sudo ./function-test-tcp4_leak
+          sudo ./function-test-tcp6
+          sudo ./function-test-tcp6_leak
+          sudo ./function-test-udp4
+          sudo ./function-test-udp4_leak
+          sudo ./function-test-udp6
+          sudo ./function-test-udp6_leak
+      - name: Thread Safety Tests
+        run: |
+          make check-thread-safety
+          sudo ./thread-safety-test-network
+      - name: Run Examples
+        run: |
+          make examples
+      - name: Run Benchmarks
+        run: |
+          make bench
+      - name: Install
+        run: |
+          sudo make install
+      - name: Test Install
+        run: |
+          gcc docs/examples/basic/basic_example.c -lstumpless -o basic_example
+          ./basic_example
   linux-release-ansi:
     name: "linux, release, ansi"
     runs-on: "ubuntu-latest"
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55659c767..292aeeb80 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ string(CONCAT enable_cpp_help_string
 )
 option(ENABLE_CPP ${enable_cpp_help_string} OFF)
 
+set(SINGLE_SOURCE_FILE "${PROJECT_BINARY_DIR}/stumpless.c")
 option(BUILD_SINGLE_FILE "create a single file version of library" OFF)
 option(BUILD_PYTHON "include the python libary" OFF)
 
@@ -683,11 +684,6 @@ if(PKG_CONFIG_FOUND)
 endif()
 
 
-# single source build
-if(BUILD_SINGLE_FILE)
-  include(tools/cmake/single_file.cmake)
-endif()
-
 # installation of examples if enabled
 if(INSTALL_EXAMPLES)
   install(DIRECTORY
@@ -1069,6 +1065,12 @@ if(FUZZ)
 endif()
 
 
+# single source build
+if(BUILD_SINGLE_FILE)
+  include(tools/cmake/single_file.cmake)
+endif()
+
+
 # c++ support
 if(ENABLE_CPP)
   if(HAVE_WRAPTURE)
diff --git a/tools/cmake/example.cmake b/tools/cmake/example.cmake
index bf48ba5ed..68e3e303b 100644
--- a/tools/cmake/example.cmake
+++ b/tools/cmake/example.cmake
@@ -27,6 +27,26 @@ function(add_no_run_example name)
   )
 endfunction(add_no_run_example)
 
+function(add_no_run_single_file_example name)
+  add_executable(example-single-file-${name}
+    EXCLUDE_FROM_ALL
+    ${SINGLE_SOURCE_FILE}
+    ${ARGN}
+  )
+
+  set_target_properties(example-single-file-${name}
+    PROPERTIES
+    BUILD_RPATH "${CMAKE_CURRENT_BINARY_DIR}"
+    COMPILE_FLAGS "${example_compile_flags}"
+  )
+
+  target_include_directories(example-single-file-${name}
+    PRIVATE
+    ${PROJECT_SOURCE_DIR}/include
+    ${CMAKE_BINARY_DIR}/include
+  )
+endfunction(add_no_run_single_file_example)
+
 macro(add_example name)
   add_no_run_example(${name} ${ARGN})
 
@@ -35,4 +55,14 @@ macro(add_example name)
     COMMAND "example-${name}"
     DEPENDS example-${name}
   )
+
+  if(BUILD_SINGLE_FILE)
+    add_no_run_single_file_example(${name} ${ARGN})
+    list(APPEND STUMPLESS_SINGLE_FILE_TARGETS example-single-file-${name})
+    list(APPEND STUMPLESS_EXAMPLE_RUNNERS run-example-single-file-${name})
+    add_custom_target(run-example-single-file-${name}
+      COMMAND "example-single-file-${name}"
+      DEPENDS example-single-file-${name}
+    )
+  endif()
 endmacro(add_example)
diff --git a/tools/cmake/single_file.cmake b/tools/cmake/single_file.cmake
index 03ab86d4e..bb606c3ec 100644
--- a/tools/cmake/single_file.cmake
+++ b/tools/cmake/single_file.cmake
@@ -1,5 +1,4 @@
-set(SINGLE_SOURCE_FILE "${PROJECT_BINARY_DIR}/stumpless.c")
-message("creating single source library ${SINGLE_SOURCE_FILE}")
+message("creating single file library ${SINGLE_SOURCE_FILE}")
 
 function(include_file source_filename include_filenames already_included)
   foreach(include_filename ${include_filenames})
@@ -53,3 +52,12 @@ foreach(source_file ${STUMPLESS_SOURCES})
     )
   endif()
 endforeach()
+
+# this needs to happen after the stumpless library is set up
+get_target_property(STUMPLESS_LINK_LIBRARIES stumpless LINK_LIBRARIES)
+message("single file targets: ${STUMPLESS_SINGLE_FILE_TARGETS}")
+message("linked libraries: ${STUMPLESS_LINK_LIBRARIES}")
+foreach(example_target ${STUMPLESS_SINGLE_FILE_TARGETS})
+  message("  adding to target: ${example_target}")
+  target_link_libraries(${example_target} ${STUMPLESS_LINK_LIBRARIES})
+endforeach()