libcpr · COM8 · Jun 14, 2025 · May 1, 2025 · May 1, 2025 · May 1, 2025
diff --git a/.github/workflows/build-deb.yml b/.github/workflows/build-deb.yml
@@ -14,15 +14,11 @@ jobs:
     steps:
     - name: "Checkout"
       uses: actions/checkout@v3
-      with:
-        submodules: true
-        path: cpr
-
       # Install packages necessary for building libcpr and package
     - name: "Update package list"
       run: sudo apt update
     - name: "Install cpr dependencies"
-      run: sudo apt install -y libssl-dev libcurl4-openssl-dev
+      run: sudo apt install -y libssl-dev libcurl4-openssl-dev libpsl-dev
     - name: "Install building tools"
       run: sudo apt install -y cmake debmake devscripts debhelper
       # Set version number
@@ -34,7 +30,7 @@ jobs:
       run: |
         mkdir -p cpr/build
         pushd cpr/build
-        cmake .. -DCPR_BUILD_VERSION_OUTPUT_ONLY=ON
+        cmake .. -DCPR_BUILD_VERSION_OUTPUT_ONLY=ON -DCPR_USE_SYSTEM_LIB_PSL=ON -DCPR_USE_SYSTEM_CURL=ON
         echo "RELEASE_VERSION=$(cat version.txt)" >> $GITHUB_ENV
         popd
         rm -rf cpr/build

diff --git a/.github/workflows/build-nuget.yml b/.github/workflows/build-nuget.yml
@@ -26,10 +26,10 @@ jobs:
       run: echo "NuGet version will be '${{ env.RELEASE_VERSION }}'"
     - name: Checkout
       uses: actions/checkout@v3
-      with:
-        submodules: true
     - name: Setup NuGet.exe
       uses: nuget/setup-nuget@v2
+    - name: Install meson
+      run: pip install meson
     - name: "[Release_x86] Build & Install"
       env:
         CMAKE_GENERATOR: "Visual Studio 16 2019"

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
   ubuntu-clang-openssl:
     strategy:
       matrix:
-        container: ["ubuntu:20.04", "ubuntu:24.04", "ubuntu:latest"]
+        container: ["ubuntu:latest", "ubuntu:rolling"]
         systemCurl: [ON, OFF]
         buildType: [Debug, Release]
     runs-on: ubuntu-latest
@@ -21,7 +21,7 @@ jobs:
     - name: Update package list
       run: apt update
     - name: Install Dependencies
-      run: apt install -y git libssl-dev cmake build-essential clang libcurl4-openssl-dev
+      run: apt install -y git libssl-dev cmake build-essential clang libcurl4-openssl-dev libpsl-dev meson libunistring-dev
       env:
         DEBIAN_FRONTEND: noninteractive
     - name: Setup cmake
@@ -35,7 +35,7 @@ jobs:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
-        USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
+        CPR_USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -49,7 +49,7 @@ jobs:
   ubuntu-gcc-openssl:
     strategy:
       matrix:
-        container: ["ubuntu:20.04", "ubuntu:24.04", "ubuntu:latest"]
+        container: ["ubuntu:latest", "ubuntu:rolling"]
         systemCurl: [ON, OFF]
         buildType: [Debug, Release]
     runs-on: ubuntu-latest
@@ -58,7 +58,7 @@ jobs:
     - name: Update package list
       run: apt update
     - name: Install Dependencies
-      run: apt install -y git libssl-dev cmake build-essential libcurl4-openssl-dev
+      run: apt install -y git libssl-dev cmake build-essential libcurl4-openssl-dev libpsl-dev meson libunistring-dev
       env:
         DEBIAN_FRONTEND: noninteractive
     - name: Setup cmake
@@ -72,7 +72,7 @@ jobs:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
-        USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
+        CPR_USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -89,7 +89,7 @@ jobs:
     - name: Update package list
       run: sudo apt update
     - name: Install Dependencies
-      run: sudo apt install -y git libssl-dev libmbedtls-dev cmake build-essential
+      run: sudo apt install -y git libssl-dev libmbedtls-dev cmake build-essential libpsl-dev meson libunistring-dev
       env:
         DEBIAN_FRONTEND: noninteractive
     - name: Setup cmake
@@ -114,24 +114,21 @@ jobs:
         ctest-options: ${{ env.CTEST_OPTIONS }}
 
   fedora-clang-openssl:
-    strategy:
-      matrix:
-        container: ["fedora:latest"]
     runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
+    container: "fedora:latest"
     steps:
     - name: Update package list
       run: dnf update -y
     - name: Install Dependencies
-      run: dnf install -y gcc clang git gcc gdb make openssl-devel libcurl-devel cmake
+      run: dnf install -y gcc clang git gcc gdb make openssl-devel libcurl-devel cmake libpsl-devel libunistring-devel meson
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
       env:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
-        USE_SYSTEM_CURL: OFF
+        CPR_USE_SYSTEM_CURL: OFF
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -145,24 +142,23 @@ jobs:
   fedora-gcc-openssl:
     strategy:
       matrix:
-        container: ["fedora:latest"]
         systemCurl: [ON, OFF]
         buildType: [Debug, Release]
     runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
+    container: "fedora:latest"
     steps:
     - name: Update package list
       run: dnf update -y
     - name: Install Dependencies
-      run: dnf install -y gcc clang git gcc gdb make openssl-devel libcurl-devel cmake
+      run: dnf install -y gcc clang git gcc gdb make openssl-devel libcurl-devel cmake libpsl-devel libunistring-devel meson
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
       env:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
-        USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
+        CPR_USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -183,7 +179,7 @@ jobs:
     - name: Update package list
       run: dnf update -y
     - name: Install Dependencies
-      run: dnf install -y gcc clang git gcc gdb make openssl-devel libasan libubsan liblsan libtsan cmake
+      run: dnf install -y gcc clang git gcc gdb make openssl-devel libasan libubsan liblsan libtsan cmake libpsl-devel libunistring-devel meson
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
@@ -206,13 +202,17 @@ jobs:
         buildType: [Debug, Release]
     runs-on: windows-latest
     steps:
+    - uses: actions/setup-python@v1
+    - name: Install meson
+      run: pip install meson
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
       env:
         CMAKE_GENERATOR: "Visual Studio 17 2022"
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: OFF
+        CURL_USE_LIBPSL: OFF
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -224,6 +224,9 @@ jobs:
   windows-msvc-openssl:
     runs-on: windows-latest
     steps:
+    - uses: actions/setup-python@v1
+    - name: Install meson
+      run: pip install meson
     - name: Install OpenSSL
       run: choco install openssl -y
     - name: Checkout
@@ -234,6 +237,7 @@ jobs:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
+        CURL_USE_LIBPSL: OFF
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -248,12 +252,15 @@ jobs:
         buildType: [Debug, Release]
     runs-on: macos-latest
     steps:
+    - name: Install libpsl
+      run: brew install libpsl
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
       env:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: OFF
+        CPR_USE_SYSTEM_LIB_PSL: ON
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -267,13 +274,16 @@ jobs:
   macos-clang-darwinssl:
     runs-on: macos-latest
     steps:
+    - name: Install libpsl
+      run: brew install libpsl
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
       env:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: OFF
         CPR_FORCE_DARWINSSL_BACKEND: ON
+        CPR_USE_SYSTEM_LIB_PSL: ON
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
@@ -289,13 +299,16 @@ jobs:
     steps:
     - name: Install OpenSSL
       run: brew install openssl
+    - name: Install libpsl
+      run: brew install libpsl
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
       env:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
+        CPR_USE_SYSTEM_LIB_PSL: ON
         OPENSSL_ROOT_DIR: "${{ env.MACOS_OPENSSL_ROOT_DIR }}"
         OPENSSL_LIBRARIES: "${{ env.MACOS_OPENSSL_ROOT_DIR }}/lib"
         LDFLAGS: "-L${{ env.MACOS_OPENSSL_ROOT_DIR }}/lib"
@@ -318,6 +331,8 @@ jobs:
       run: brew install boost
     - name: Install OpenSSL
       run: brew install openssl
+    - name: Install libpsl
+      run: brew install libpsl
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Build & Test"
@@ -326,6 +341,7 @@ jobs:
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
         CPR_USE_BOOST_FILESYSTEM: ON
+        CPR_USE_SYSTEM_LIB_PSL: ON
         OPENSSL_ROOT_DIR: "${{ env.MACOS_OPENSSL_ROOT_DIR }}"
         OPENSSL_LIBRARIES: "${{ env.MACOS_OPENSSL_ROOT_DIR }}/lib"
         LDFLAGS: "-L${{ env.MACOS_OPENSSL_ROOT_DIR }}/lib"

diff --git a/.github/workflows/clang-tidy.yml b/.github/workflows/clang-tidy.yml
@@ -10,7 +10,7 @@ jobs:
     - name: Update package list
       run: sudo dnf update -y
     - name: Install dependencies
-      run: sudo dnf install -y openssl-devel cmake git gcc clang ninja-build
+      run: sudo dnf install -y openssl-devel cmake git gcc clang ninja-build libpsl-devel meson
     - name: Install clang-tidy
       run: sudo dnf install -y clang-tools-extra
     - name: Checkout

diff --git a/.github/workflows/cppcheck.yml b/.github/workflows/cppcheck.yml
@@ -5,15 +5,14 @@ on: [push, workflow_dispatch, pull_request] # Trigger for every push as well as
 jobs:
   cppcheck:
     runs-on: ubuntu-latest
+    container: "fedora:latest" # Use fedora for an up to date version of cppcheck
     steps:
     - name: Checkout
       uses: actions/checkout@v3
-      with:
-        submodules: true
     - name: Update package list
-      run: sudo apt update
-    - name: Install cppcheck
-      run: sudo apt install cppcheck
+      run: dnf update -y
+    - name: Install Dependencies
+      run: dnf install -y gcc clang git gcc gdb make openssl-devel cmake libpsl-devel cppcheck meson
     - name: "[Release g++] Build"
       env:
         CPR_ENABLE_CPPCHECK: ON

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -56,6 +56,7 @@ cpr_option(CPR_CURL_NOSIGNAL "Set to ON to disable use of signals in libcurl." O
 cpr_option(CURL_VERBOSE_LOGGING "Curl verbose logging during building curl" OFF)
 cpr_option(CPR_USE_SYSTEM_GTEST "If ON, this project will look in the system paths for an installed gtest library. If none is found it will use the built-in one." OFF)
 cpr_option(CPR_USE_SYSTEM_CURL "If enabled we will use the curl lib already installed on this system." OFF)
+cpr_option(CPR_USE_SYSTEM_LIB_PSL "Since curl 8.13 it depends on libpsl. If enabled we will use the psl lib already installed on this system. Else meson is required as build dependency." ${CPR_USE_SYSTEM_CURL})
 cpr_option(CPR_ENABLE_CURL_HTTP_ONLY "If enabled we will only use the HTTP/HTTPS protocols from CURL. If disabled, all the CURL protocols are enabled. This is useful if your project uses libcurl and you need support for other CURL features e.g. sending emails." ON)
 cpr_option(CPR_ENABLE_SSL "Enables or disables the SSL backend. Required to perform HTTPS requests." ON)
 cpr_option(CPR_FORCE_OPENSSL_BACKEND "Force to use the OpenSSL backend. If CPR_FORCE_OPENSSL_BACKEND, CPR_FORCE_DARWINSSL_BACKEND, CPR_FORCE_MBEDTLS_BACKEND, and CPR_FORCE_WINSSL_BACKEND are set to to OFF, cpr will try to automatically detect the best available SSL backend (WinSSL - Windows, OpenSSL - Linux, DarwinSSL - Mac ...)." OFF)
@@ -294,10 +295,14 @@ else()
     if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
         cmake_policy(SET CMP0135 NEW)
     endif()
-    FetchContent_Declare(curl
-                         URL                    https://github.com/curl/curl/releases/download/curl-8_10_1/curl-8.10.1.tar.xz
-                         URL_HASH               SHA256=73a4b0e99596a09fa5924a4fb7e4b995a85fda0d18a2c02ab9cf134bebce04ee # the file hash for curl-8.10.1.tar.xz
-                         USES_TERMINAL_DOWNLOAD TRUE)   # <---- This is needed only for Ninja to show download progress
+
+    # Since curl 8.13, curl depends on lib psl
+    if(NOT ${CPR_USE_SYSTEM_LIB_PSL})
+        include(libpsl)
+    endif()
+
+    FetchContent_Declare(curl URL https://github.com/curl/curl/releases/download/curl-8_13_0/curl-8.13.0.tar.xz
+                              URL_HASH SHA256=4a093979a3c2d02de2fbc00549a32771007f2e78032c6faa5ecd2f7a9e152025) # the file hash for curl-8.13.0.tar.xz
     FetchContent_MakeAvailable(curl)
 
     restore_variable(DESTINATION CMAKE_CXX_CLANG_TIDY BACKUP CMAKE_CXX_CLANG_TIDY_BKP)
@@ -377,7 +382,7 @@ if(CPR_BUILD_TESTS)
                          USES_TERMINAL_DOWNLOAD TRUE)   # <---- This is needed only for Ninja to show download progress
     # We can not use FetchContent_MakeAvailable, since we need to patch mongoose to use CMake
     if (NOT mongoose_POPULATED)
-        FetchContent_POPULATE(mongoose)
+        FetchContent_MakeAvailable(mongoose)
 
         file(INSTALL cmake/mongoose.CMakeLists.txt DESTINATION ${mongoose_SOURCE_DIR})
         file(RENAME ${mongoose_SOURCE_DIR}/mongoose.CMakeLists.txt ${mongoose_SOURCE_DIR}/CMakeLists.txt)

diff --git a/cmake/libpsl.cmake b/cmake/libpsl.cmake
@@ -0,0 +1,59 @@
+# Builds libpsl which is especially necessary on Windows since there it is not available via e.g. a package manager.
+
+include(ExternalProject)
+find_program(MESON_PATH meson)
+
+if(MESON_PATH STREQUAL "MESON_PATH-NOTFOUND")
+    message(FATAL_ERROR "meson not found. Please make sure you have meson installed on your system (https://mesonbuild.com/Getting-meson.html). Meson is required for building libpsl for curl on Windows.")
+    return()
+endif()
+
+FetchContent_Declare(libpsl_src GIT_REPOSITORY https://github.com/rockdaboot/libpsl.git
+                                GIT_TAG 0.21.5)
+FetchContent_MakeAvailable(libpsl_src) # sets libpsl_src_SOURCE_DIR / _BINARY_DIR
+
+set(LIBPSL_SOURCE_DIR "${libpsl_src_SOURCE_DIR}")
+set(LIBPSL_BUILD_DIR "${libpsl_src_BINARY_DIR}")
+set(LIBPSL_INSTALL_DIR "${CMAKE_BINARY_DIR}/libpsl_src-install")
+file(MAKE_DIRECTORY "${LIBPSL_BUILD_DIR}")
+
+# Meson configure
+# We only care about static libraries of psl. In case you need a dynamic version, feel free to add support for it.
+message(STATUS "Configuring libpsl...")
+execute_process(COMMAND "${MESON_PATH}" setup
+                        "${LIBPSL_BUILD_DIR}"
+                        "${LIBPSL_SOURCE_DIR}"
+                        -Dtests=false
+                        -Ddocs=false
+                        --buildtype=release
+                        --prefix "${LIBPSL_INSTALL_DIR}"
+                        --default-library=static
+                RESULT_VARIABLE MESON_SETUP_RC)
+if(MESON_SETUP_RC)
+    message(FATAL_ERROR "Meson setup for libpsl failed!")
+endif()
+
+# Meson build
+message(STATUS "Building libpsl...")
+execute_process(COMMAND "${MESON_PATH}" compile -C "${LIBPSL_BUILD_DIR}"
+                RESULT_VARIABLE MESON_COMPILE_RC
+)
+if(MESON_COMPILE_RC)
+    message(FATAL_ERROR "Meson compile for libpsl failed!")
+endif()
+
+# Meson install
+message(STATUS "Installing libpsl...")
+execute_process(COMMAND "${MESON_PATH}" install -C "${LIBPSL_BUILD_DIR}"
+                RESULT_VARIABLE MESON_INSTALL_RC)
+if(MESON_INSTALL_RC)
+    message(FATAL_ERROR "Meson install for libpsl failed!")
+endif()
+
+list(APPEND CMAKE_LIBRARY_PATH "${LIBPSL_INSTALL_DIR}/lib64")
+list(APPEND CMAKE_LIBRARY_PATH "${LIBPSL_INSTALL_DIR}/lib")
+list(APPEND CMAKE_INCLUDE_PATH "${LIBPSL_INSTALL_DIR}/include")
+
+# Workaround for Windows compilation.
+# Ref: https://github.com/microsoft/vcpkg/pull/38847/files#diff-922fe829582a7e5acf5b0c35181daa63064fc12a2c889c5d89a19e5e02113f1bL44
+add_compile_definitions(PSL_STATIC=1)