Land #1206, don't modify CMAKE_INSTALL_*DIR variables if specified as absolute paths

1 files changed, 10 insertions, 2 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 503ace3..1fc845c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -572,8 +572,16 @@ if(ENABLE_LIBRESSL_INSTALL)
                 # Create pkgconfig files.
                 set(prefix      ${CMAKE_INSTALL_PREFIX})
                 set(exec_prefix \${prefix})
-                set(libdir      \${exec_prefix}/${CMAKE_INSTALL_LIBDIR})
-                set(includedir  \${prefix}/${CMAKE_INSTALL_INCLUDEDIR})
+                if(IS_ABSOLUTE ${CMAKE_INSTALL_LIBDIR})
+                        set(libdir      ${CMAKE_INSTALL_LIBDIR})
+                else()
+                        set(libdir      \${exec_prefix}/${CMAKE_INSTALL_LIBDIR})
+                endif()
+                if(IS_ABSOLUTE ${CMAKE_INSTALL_INCLUDEDIR})
+                        set(includedir  ${CMAKE_INSTALL_INCLUDEDIR})
+                else()
+                        set(includedir  \${prefix}/${CMAKE_INSTALL_INCLUDEDIR})
+                endif()
                 if(PLATFORM_LIBS)
                         string(REGEX REPLACE ";" " -l" PLATFORM_LDADD ";${PLATFORM_LIBS}")
                 endif()