From: Alexey Sheplyakov <asheplyakov@altlinux.org>
Date: Thu, 26 Dec 2019 17:45:11 +0000 (+0400)
Subject: build: windows: enable automatic imports by default
X-Git-Tag: release_1-8-0~17
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=f7ffc0186d90947cb5df395b9fc547ab80115ea0

build: windows: enable automatic imports by default

For now there are no dllexport/dllimport markings in GiNaC and CLN, so
export all symbols when building GiNaC DLL, and enable automatic imports
when linking with it. Note: this works with GNU linker only.
---

diff --git a/ginac/CMakeLists.txt b/ginac/CMakeLists.txt
index 07d8530e..98bd89b8 100644
--- a/ginac/CMakeLists.txt
+++ b/ginac/CMakeLists.txt
@@ -154,6 +154,12 @@ set_target_properties(ginac PROPERTIES
 target_link_libraries(ginac ${CLN_LIBRARIES})
 include_directories(${CMAKE_SOURCE_DIR}/ginac)
 
+if (WIN32 AND CMAKE_COMPILER_IS_GNUCXX AND BUILD_SHARED_LIBS)
+	set_target_properties(ginac PROPERTIES
+		LINK_FLAGS "-Wl,--enable-auto-import -Wl,--export-all-symbols"
+	)
+endif()
+
 if (NOT BUILD_SHARED_LIBS)
 	set_target_properties(ginac PROPERTIES OUTPUT_NAME "ginac")
 	# Avoid the static library vs import library conflict (necessary for