From 45824f58b10575d8d88d4bce934aedee821a6df0 Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Thu, 15 Oct 2020 22:26:55 +0200
Subject: [PATCH] CMakeLists.txt: respect BUILD_SHARED_LIBS

Don't build and install pistache_shared if the standard cmake
BUILD_SHARED_LIBS is set to OFF

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Backport from upstream:
  https://github.com/oktal/pistache/commit/c04166ca9e6420a8fbc93fef4055ee2eccdcebe4
]
---
 src/CMakeLists.txt | 43 +++++++++++++++++++++++++------------------
 1 file changed, 25 insertions(+), 18 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6521b20..c5b049f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -26,31 +26,36 @@ set(include_install_dir ${CMAKE_INSTALL_INCLUDEDIR})
 set(lib_install_dir ${CMAKE_INSTALL_LIBDIR})
 set(bin_install_dir ${CMAKE_INSTALL_BINDIR})
 
-add_library(pistache_shared SHARED $<TARGET_OBJECTS:pistache>)
-add_library(pistache_static STATIC $<TARGET_OBJECTS:pistache>)
+if (BUILD_SHARED_LIBS)
+    add_library(pistache_shared SHARED $<TARGET_OBJECTS:pistache>)
+    target_link_libraries(pistache_shared PRIVATE Threads::Threads ${CMAKE_REQUIRED_LIBRARIES})
+    target_include_directories(pistache_shared INTERFACE ${PISTACHE_INCLUDE})
+endif ()
 
-target_link_libraries(pistache_shared PRIVATE Threads::Threads ${CMAKE_REQUIRED_LIBRARIES})
+add_library(pistache_static STATIC $<TARGET_OBJECTS:pistache>)
 target_link_libraries(pistache_static PRIVATE Threads::Threads ${CMAKE_REQUIRED_LIBRARIES})
-
-target_include_directories(pistache_shared INTERFACE ${PISTACHE_INCLUDE})
 target_include_directories(pistache_static INTERFACE ${PISTACHE_INCLUDE})
 
 if (PISTACHE_USE_SSL)
     target_compile_definitions(pistache PUBLIC PISTACHE_USE_SSL)
-    target_compile_definitions(pistache_shared PUBLIC PISTACHE_USE_SSL)
     target_compile_definitions(pistache_static PUBLIC PISTACHE_USE_SSL)
 
     target_include_directories(pistache PRIVATE ${OPENSSL_INCLUDE_DIR})
-    target_link_libraries(pistache_shared PUBLIC OpenSSL::SSL OpenSSL::Crypto)
     target_link_libraries(pistache_static PUBLIC OpenSSL::SSL OpenSSL::Crypto)
+    if (BUILD_SHARED_LIBS)
+        target_compile_definitions(pistache_shared PUBLIC PISTACHE_USE_SSL)
+        target_link_libraries(pistache_shared PUBLIC OpenSSL::SSL OpenSSL::Crypto)
+    endif ()
 endif ()
 
 set(Pistache_OUTPUT_NAME "pistache")
-set_target_properties(pistache_shared PROPERTIES
-    OUTPUT_NAME ${Pistache_OUTPUT_NAME}
-    VERSION ${version}
-    SOVERSION ${VERSION_MAJOR}
-)
+if (BUILD_SHARED_LIBS)
+    set_target_properties(pistache_shared PROPERTIES
+        OUTPUT_NAME ${Pistache_OUTPUT_NAME}
+        VERSION ${version}
+        SOVERSION ${VERSION_MAJOR}
+    )
+endif ()
 
 set_target_properties(pistache_static PROPERTIES 
     OUTPUT_NAME ${Pistache_OUTPUT_NAME}
@@ -60,13 +65,15 @@ if (PISTACHE_INSTALL)
     set(Pistache_CONFIG_FILE "PistacheConfig.cmake")
     set(Pistache_CONFIG_VERSION_FILE "PistacheConfigVersion.cmake")
 
-    install(
-      TARGETS pistache_shared
-      EXPORT PistacheTargets
-      ARCHIVE DESTINATION ${lib_install_dir}
-      LIBRARY DESTINATION ${lib_install_dir}
-      RUNTIME DESTINATION ${bin_install_dir}
-      INCLUDES DESTINATION ${include_install_dir})
+    if (BUILD_SHARED_LIBS)
+        install(
+          TARGETS pistache_shared
+          EXPORT PistacheTargets
+          ARCHIVE DESTINATION ${lib_install_dir}
+          LIBRARY DESTINATION ${lib_install_dir}
+          RUNTIME DESTINATION ${bin_install_dir}
+          INCLUDES DESTINATION ${include_install_dir})
+    endif()
 
     install(
       DIRECTORY "${PROJECT_SOURCE_DIR}/include/pistache"
-- 
2.28.0