Supported compilers

The Sagui library is compatible with the following compilers:

GCC - GNU Compiler Collection.
LLVM - CLang Project.

and was successfully compiled in:

GCC/Clang on many Linux distributions like Fedora, openSUSE, Debian, Ubuntu, Raspbian etc.
MinGW-w64 on Linux and Windows.
Google's NDK on Linux.

Build options

There are a few options of the Sagui building, they are:

-DSG_ABI_COMPLIANCE_CHECKER=<ON/OFF>
-DSG_BUILD_<TEST-NAME>_TESTING=<ON/OFF>
-DSG_BUILD_<EXAMPLE-NAME>_EXAMPLE=<ON/OFF>
-DSG_BUILD_EXAMPLES=<ON/OFF>
-DSG_HTTPS_SUPPORT=<ON/OFF>
-DSG_HTTP_COMPRESSION=<ON/OFF>
-DSG_PATH_ROUTING=<ON/OFF>
-DSG_PICKY_COMPILER=<ON/OFF>
-DSG_PVS_STUDIO=<ON/OFF>

and many specific variables, like SG_LIBSAGUI_RC, GNUTLS_INCLUDE_DIR, PCRE2_INCLUDE_DIR, PCRE2_JIT_SUPPORT and so on. Please take a look at the files in the /cmake directory for more information.

Build types

One build type can be specified though the variable CMAKE_BUILD_TYPE=<Release|Debug>. If omitted, it assumes the Release type by default. A minimal command to prepare the release type is:

mkdir build
cd build/
cmake ..

it prints a build summary as following (assuming you are using Sagui 3.0.0):

-- The C compiler identification is GNU 9.3.1
-- Check for working C compiler: /usr/lib64/ccache/cc
-- Check for working C compiler: /usr/lib64/ccache/cc - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Looking for __GNU_LIBRARY__
-- Looking for __GNU_LIBRARY__ - found
-- Looking for include file errno.h
-- Looking for include file errno.h - found
-- Looking for arpa/inet.h
-- Looking for arpa/inet.h - found
-- Looking for inet_ntop
-- Looking for inet_ntop - found

Sagui library 3.0.0 - building summary:

  Generator: Unix Makefiles
  Install: /usr/local
  System: Linux-5.6.7-100.fc30.x86_64 x86_64
  Compiler details:
    Executable: /usr/lib64/ccache/cc
    Version: 9.3.1
    Machine: x86_64-redhat-linux
    CFLAGS: -O2 -DNDEBUG -Wall -Werror -Wextra -Wpedantic -Wdeclaration-after-statement -Wstrict-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline
  Build: Release-x86_64 (shared)
  Additional features:
    HTTPS support: No
    HTTP compression: Yes
    Path routing: Yes
  Examples: Yes (str, strmap, httpauth, httpcookie, httpsrv, httpuplds, httpsrv_benchmark, httpsrv_sse, httpreq_payload, httpreq_isolate, httpcomp, entrypoint, router_simple, router_segments, router_vars, router_srv)
  Docs: No
  Run tests: No
  cURL tests: No

-- Configuring done
-- Generating done
-- Build files have been written to: ~/libsagui/build

Finally, build the shared library:

make sagui

it prints a log as following:

Scanning dependencies of target pcre2-10.34
[  2%] Creating directories for 'pcre2-10.34'
[  5%] Performing download step (download, verify and extract) for 'pcre2-10.34'
-- pcre2-10.34 download command succeeded.  See also ~/libsagui/build/pcre2-10.34/src/pcre2-10.34-stamp/pcre2-10.34-download-*.log
[  7%] No patch step for 'pcre2-10.34'
[ 10%] No update step for 'pcre2-10.34'
[ 13%] Performing configure step for 'pcre2-10.34'
-- pcre2-10.34 configure command succeeded.  See also ~/libsagui/build/pcre2-10.34/src/pcre2-10.34-stamp/pcre2-10.34-configure-*.log
[ 15%] Performing build step for 'pcre2-10.34'
-- pcre2-10.34 build command succeeded.  See also ~/libsagui/build/pcre2-10.34/src/pcre2-10.34-stamp/pcre2-10.34-build-*.log
[ 18%] Performing install step for 'pcre2-10.34'
-- pcre2-10.34 install command succeeded.  See also ~/libsagui/build/pcre2-10.34/src/pcre2-10.34-stamp/pcre2-10.34-install-*.log
[ 21%] Completed 'pcre2-10.34'
[ 21%] Built target pcre2-10.34
Scanning dependencies of target libmicrohttpd-0.9.70
[ 23%] Creating directories for 'libmicrohttpd-0.9.70'
[ 26%] Performing download step (download, verify and extract) for 'libmicrohttpd-0.9.70'
-- libmicrohttpd-0.9.70 download command succeeded.  See also ~/libsagui/build/libmicrohttpd-0.9.70/src/libmicrohttpd-0.9.70-stamp/libmicrohttpd-0.9.70-download-*.log
[ 28%] No patch step for 'libmicrohttpd-0.9.70'
[ 31%] No update step for 'libmicrohttpd-0.9.70'
[ 34%] Performing configure step for 'libmicrohttpd-0.9.70'
-- libmicrohttpd-0.9.70 configure command succeeded.  See also ~/libsagui/build/libmicrohttpd-0.9.70/src/libmicrohttpd-0.9.70-stamp/libmicrohttpd-0.9.70-configure-*.log
[ 36%] Performing build step for 'libmicrohttpd-0.9.70'
-- libmicrohttpd-0.9.70 build command succeeded.  See also ~/libsagui/build/libmicrohttpd-0.9.70/src/libmicrohttpd-0.9.70-stamp/libmicrohttpd-0.9.70-build-*.log
[ 39%] Performing install step for 'libmicrohttpd-0.9.70'
-- libmicrohttpd-0.9.70 install command succeeded.  See also ~/libsagui/build/libmicrohttpd-0.9.70/src/libmicrohttpd-0.9.70-stamp/libmicrohttpd-0.9.70-install-*.log
[ 42%] Completed 'libmicrohttpd-0.9.70'
[ 42%] Built target libmicrohttpd-0.9.70
Scanning dependencies of target zlib-1.2.11
[ 44%] Creating directories for 'zlib-1.2.11'
[ 47%] Performing download step (download, verify and extract) for 'zlib-1.2.11'
-- zlib-1.2.11 download command succeeded.  See also ~/libsagui/build/zlib-1.2.11/src/zlib-1.2.11-stamp/zlib-1.2.11-download-*.log
[ 50%] No patch step for 'zlib-1.2.11'
[ 52%] No update step for 'zlib-1.2.11'
[ 55%] Performing configure step for 'zlib-1.2.11'
-- zlib-1.2.11 configure command succeeded.  See also ~/libsagui/build/zlib-1.2.11/src/zlib-1.2.11-stamp/zlib-1.2.11-configure-*.log
[ 57%] Performing build step for 'zlib-1.2.11'
-- zlib-1.2.11 build command succeeded.  See also ~/libsagui/build/zlib-1.2.11/src/zlib-1.2.11-stamp/zlib-1.2.11-build-*.log
[ 60%] Performing install step for 'zlib-1.2.11'
-- zlib-1.2.11 install command succeeded.  See also ~/libsagui/build/zlib-1.2.11/src/zlib-1.2.11-stamp/zlib-1.2.11-install-*.log
[ 63%] Completed 'zlib-1.2.11'
[ 63%] Built target zlib-1.2.11
Scanning dependencies of target sagui
[ 65%] Building C object src/CMakeFiles/sagui.dir/sg_utils.c.o
[ 68%] Building C object src/CMakeFiles/sagui.dir/sg_extra.c.o
[ 71%] Building C object src/CMakeFiles/sagui.dir/sg_str.c.o
[ 73%] Building C object src/CMakeFiles/sagui.dir/sg_strmap.c.o
[ 76%] Building C object src/CMakeFiles/sagui.dir/sg_httpauth.c.o
[ 78%] Building C object src/CMakeFiles/sagui.dir/sg_httpuplds.c.o
[ 81%] Building C object src/CMakeFiles/sagui.dir/sg_httpreq.c.o
[ 84%] Building C object src/CMakeFiles/sagui.dir/sg_httpres.c.o
[ 86%] Building C object src/CMakeFiles/sagui.dir/sg_httpsrv.c.o
[ 89%] Building C object src/CMakeFiles/sagui.dir/sg_entrypoint.c.o
[ 92%] Building C object src/CMakeFiles/sagui.dir/sg_entrypoints.c.o
[ 94%] Building C object src/CMakeFiles/sagui.dir/sg_routes.c.o
[ 97%] Building C object src/CMakeFiles/sagui.dir/sg_router.c.o
[100%] Linking C shared library libsagui.so
[100%] Built target sagui

Building the shared library (.so/.dylib/.dll)

Supposing the shared library will be built using the clang front-end, set the variable CMAKE_C_COMPILER to clang:

cmake -DCMAKE_C_COMPILER=clang ..
make sagui

Additional variables can be enabled. For example, to build and run the library tests, choose the build type Debug and turn on the variable BUILD_TESTING:

cmake -DCMAKE_C_COMPILER=clang -DCMAKE_BUILD_TYPE=Debug -DBUILD_TESTING=ON ..
make all test

it compiles the library and runs its common tests, printing a log as:

Running tests...
Test project ~/libsagui/build
      Start  1: test_utils
 1/15 Test  #1: test_utils .......................   Passed    0.00 sec
      Start  2: test_extra
 2/15 Test  #2: test_extra .......................   Passed    0.00 sec
      Start  3: test_str
 3/15 Test  #3: test_str .........................   Passed    0.00 sec
      Start  4: test_strmap
 4/15 Test  #4: test_strmap ......................   Passed    0.00 sec
      Start  5: test_httpauth
 5/15 Test  #5: test_httpauth ....................   Passed    0.00 sec
      Start  6: test_httpuplds
 6/15 Test  #6: test_httpuplds ...................   Passed    0.00 sec
      Start  7: test_httpreq
 7/15 Test  #7: test_httpreq .....................   Passed    0.00 sec
      Start  8: test_httpres
 8/15 Test  #8: test_httpres .....................   Passed    0.00 sec
      Start  9: test_httpsrv
 9/15 Test  #9: test_httpsrv .....................   Passed    0.03 sec
      Start 10: test_entrypoint
10/15 Test #10: test_entrypoint ..................   Passed    0.00 sec
      Start 11: test_entrypoints
11/15 Test #11: test_entrypoints .................   Passed    0.00 sec
      Start 12: test_routes
12/15 Test #12: test_routes ......................   Passed    0.00 sec
      Start 13: test_router
13/15 Test #13: test_router ......................   Passed    0.00 sec
      Start 14: test_httpsrv_curl
14/15 Test #14: test_httpsrv_curl ................   Passed    0.52 sec
      Start 15: test_httpsrv_tls_curl
15/15 Test #15: test_httpsrv_tls_curl ............   Passed    0.04 sec

100% tests passed, 0 tests failed out of 15

Total Test time (real) =   0.64 sec

Building the documentation

The documentation is available in HTML format which can be generated using the Doxygen tool. For example:

cmake -DSG_BUILD_HTML=ON ..
make doc

it generates the HTML reference into build/docs directory.

Building the library with TLS (HTTPS support)

The HTTPS support is possible linking the GnuTLS library though SG_HTTPS_SUPPORT build option:

cmake -DCMAKE_C_COMPILER=clang -DSG_HTTPS_SUPPORT=ON ..

NOTE: If the development version of the GnuTLS library is not available in the environment, the HTTPS support will be disable automatically.

Building distribution packages

Distribution packages are available in TAR.GZ and ZIP files containing:

library source
static library
shared library

To distribute the library source, perform:

cmake ..
make dist # or "make package_source"

it generates the files libsagui-3.0.0.tar.gz and libsagui-3.0.0.zip containing the library source.

To distribute the static library:

cmake -DCMAKE_C_COMPILER=clang -DBUILD_SHARED_LIBS=OFF ..
make package

the package content:

tar -ztf libsagui-3.0.0.tar.gz
libsagui-3.0.0/include/
libsagui-3.0.0/include/sagui.h
libsagui-3.0.0/lib64/
libsagui-3.0.0/lib64/pkgconfig/
libsagui-3.0.0/lib64/pkgconfig/libsagui.pc
libsagui-3.0.0/lib64/libsagui.a

To distribute the shared library:

cmake -DCMAKE_C_COMPILER=clang ..
make package

the package content:

tar -ztf libsagui-3.0.0.tar.gz
libsagui-3.0.0/include/
libsagui-3.0.0/include/sagui.h
libsagui-3.0.0/lib64/
libsagui-3.0.0/lib64/libsagui.so.3.0.0
libsagui-3.0.0/lib64/pkgconfig/
libsagui-3.0.0/lib64/pkgconfig/libsagui.pc
libsagui-3.0.0/lib64/libsagui.so <symbolic link>
libsagui-3.0.0/lib64/libsagui.so.3 <symbolic link>

Extra buildings

Building the shared library for Windows 32/64 bits using MinGW installed on Linux:

cmake -DCMAKE_TOOLCHAIN_FILE="../cmake/Toolchain-mingw32-Linux.cmake" ..
make sagui install/strip

for 64 bits:

cmake \
  -DMINGW64=ON \
  -DCMAKE_TOOLCHAIN_FILE="../cmake/Toolchain-mingw32-Linux.cmake" ..
make sagui install/strip

it builds and saves the DLL in Output/bin/libsagui-2.dll.

NOTE: the package mingw32-winpthreads-static (or mingw64-winpthreads-static for 64 bits) must be installed in some Linux distributions (e.g: Fedora and openSUSE).

Building the shared library for Windows 32/64 bits using MinGW installed on Windows:

cmake -G "MSYS Makefiles" ..
make sagui install/strip

it builds and saves the DLL in Output\bin\libsagui-2.dll.

Building and running the tests on Android using Google's NDK:

Download the package android-ndk-r18b-linux-x86_64.zip from the Google's NDK page, plug a device with Android to the USB or setup an emulator and perform the following commands:

# prepare NDK building tools (r18b)
# note: change arch or api as you wish
export NDK=$HOME/android-ndk-r18b && \
  $NDK/build/tools/make_standalone_toolchain.py --force --arch arm --api 24 \
  --install-dir /tmp/my-android-toolchain

# prepare the environment variables
toolchain=/tmp/my-android-toolchain && \
  target_host=arm-linux-androideabi && \
  export PATH=$toolchain/bin:$PATH && \
  export AR=$target_host-ar && \
  export AS=$target_host-clang && \
  export CC=$target_host-clang && \
  export LD=$target_host-ld && \
  export STRIP=$target_host-strip && \
  export CFLAGS="-fPIE -fPIC" && \
  export LDFLAGS="-pie"

# build, upload and run the tests
cmake \
  -DCMAKE_SYSTEM_NAME=Android \
  -DCMAKE_ANDROID_ARM_MODE=ON \
  -DCMAKE_SYSTEM_VERSION=24 \
  -DCMAKE_ANDROID_ARCH_ABI=armeabi-v7a \
  -DCMAKE_ANDROID_STANDALONE_TOOLCHAIN=$toolchain \
  -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
  -DCMAKE_BUILD_TYPE=Debug \
  -DBUILD_SHARED_LIBS=OFF \
  -DBUILD_TESTING=ON ..
make all test
make clean_pushed_tests # cleans all uploaded tests

# or run the example_httpsrv example
make example_httpsrv
adb push examples/example_httpsrv /data/local/tmp/
adb shell -t /data/local/tmp/example_httpsrv
adb shell rm /data/local/tmp/example_httpsrv

# optional minimal cmake command
cmake \
  -DCMAKE_SYSTEM_NAME=Android \
  -DCMAKE_ANDROID_STANDALONE_TOOLCHAIN=$toolchain \
  -DCMAKE_BUILD_TYPE=Debug \
  -DBUILD_TESTING=ON ..

# extra - arm64
export NDK=$HOME/android-ndk-r18b && \
  $NDK/build/tools/make_standalone_toolchain.py --force --arch arm64 --api 24 \
  --install-dir /tmp/my-android-toolchain
toolchain=/tmp/my-android-toolchain && \
  target_host=aarch64-linux-android && \
  export PATH=$toolchain/bin:$PATH && \
  export AR=$target_host-ar && \
  export AS=$target_host-clang && \
  export CC=$target_host-clang && \
  export LD=$target_host-ld && \
  export STRIP=$target_host-strip && \
  export CFLAGS="-fPIE -fPIC" && \
  export LDFLAGS="-pie"
cmake \
  -DCMAKE_SYSTEM_NAME=Android \
  -DCMAKE_SYSTEM_VERSION=24 \
  -DCMAKE_ANDROID_ARCH_ABI=arm64-v8a \
  -DCMAKE_ANDROID_STANDALONE_TOOLCHAIN=$toolchain \
  -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
  -DCMAKE_BUILD_TYPE=Debug \
  -DBUILD_TESTING=ON ..
make all test
make clean_pushed_tests

Building the shared library for Raspbian using arm-linux-gnu installed on Linux:

# Assuming you are on Fedora, install the "arm-linux-gnu":
# sudo dnf install gcc-arm-linux-gnu
# sudo dnf install glibc-arm-linux-gnu
export target_host=arm-linux-gnu && \
  export AR=$target_host-ar && \
  export AS=$target_host-gcc && \
  export CC=$target_host-gcc && \
  export LD=$target_host-ld && \
  export STRIP=$target_host-strip
cmake \
  -DCMAKE_C_COMPILER=arm-linux-gnu-gcc \
  -DCMAKE_INSTALL_PREFIX=./Output ..
make sagui install/strip

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