[libxslt] Add missing compile definition for static builds to CMake

[Nick Wellnhofer <nwellnhof src gnome org>]

commit eaa53788808f4fa89521732108a9bbf4f1018e5c
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Fri Jul 29 14:32:16 2022 +0200

    Add missing compile definition for static builds to CMake
    
    See libxml2 commit:
    
    https://gitlab.gnome.org/GNOME/libxml2/-/commit/7a62870a3cc7173e61132a8d633f0bf078512e4b

 CMakeLists.txt                | 8 ++++++++
 libxslt-config.cmake.cmake.in | 3 +++
 2 files changed, 11 insertions(+)
---
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 18867d5d..01e5bd62 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -193,6 +193,10 @@ set(
 add_library(LibXslt ${LIBXSLT_HDRS} ${LIBXSLT_SRCS})
 add_library(LibXslt::LibXslt ALIAS LibXslt)
 
+if(NOT BUILD_SHARED_LIBS)
+       target_compile_definitions(LibXslt INTERFACE LIBXSLT_STATIC)
+endif()
+
 target_include_directories(
        LibXslt
        PUBLIC
@@ -276,6 +280,10 @@ set(
 add_library(LibExslt ${LIBEXSLT_HDRS} ${LIBEXSLT_SRCS})
 add_library(LibXslt::LibExslt ALIAS LibExslt)
 
+if(NOT BUILD_SHARED_LIBS)
+       target_compile_definitions(LibExslt INTERFACE LIBEXSLT_STATIC)
+endif()
+
 target_include_directories(
        LibExslt
        PUBLIC
diff --git a/libxslt-config.cmake.cmake.in b/libxslt-config.cmake.cmake.in
index 65003707..e9ce15be 100644
--- a/libxslt-config.cmake.cmake.in
+++ b/libxslt-config.cmake.cmake.in
@@ -83,6 +83,9 @@ list(APPEND LIBXSLT_INCLUDE_DIRS ${LIBXML2_INCLUDE_DIRS})
 list(APPEND LIBXSLT_LIBRARIES ${LIBXML2_LIBRARIES})
 
 if(NOT LIBXSLT_SHARED)
+       set(LIBXSLT_DEFINITIONS -DLIBXSLT_STATIC)
+       set(LIBXSLT_EXSLT_DEFINITIONS -DLIBEXSLT_STATIC)
+
        if(LIBXSLT_WITH_CRYPTO)
                list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
                find_dependency(Gcrypt)