[CMake] Statically link libxml2 for Linux

CMakeLists.txt

@@ -42,13 +42,16 @@ set(ANTLR4_WITH_STATIC_CRT OFF)
 set(ANTLR4_TAG tags/4.9.3)
 include(ExternalAntlr4Cpp)
 
+
 FIND_PACKAGE(LibXml2)
-IF (NOT ${LibXml2_FOUND})
-   MESSAGE(STATUS "Could not locate LibXml2, will install externally.")
+IF ((NOT ${LibXml2_FOUND}) OR "${CMAKE_SYSTEM}" MATCHES "Linux")
+   MESSAGE(STATUS "Could not locate LibXml2 or system is Linux, will install externally & statically link")
    set(LIBXML2_TAG tags/v2.9.13)
    include(ExternalLibXML2)
-ENDIF(NOT ${LibXml2_FOUND})
-include_directories(${LIBXML2_INCLUDE_DIR})
+   include_directories(${LIBXML2_STATIC_INCLUDE_DIR})
+ELSE ((NOT ${LibXml2_FOUND}) OR "${CMAKE_SYSTEM}" MATCHES "Linux")
+   include_directories(${LIBXML2_INCLUDE_DIR})
+ENDIF((NOT ${LibXml2_FOUND}) OR "${CMAKE_SYSTEM}" MATCHES "Linux")
 
 # sanitizer support
 # work around https://github.com/pypa/setuptools/issues/1928 with environment

c/makeotf/lib/cffread/CMakeLists.txt

@@ -2,9 +2,11 @@ add_library(makeotf_cffread STATIC cffread.c)
 
 target_include_directories(makeotf_cffread PRIVATE AFTER $<$<COMPILE_LANGUAGE:CXX>:${ANTLR4_INCLUDE_DIRS}>)
 
-if (${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
+    message("====IN (LIBXML2 FOUND)=====")
     target_link_libraries(makeotf_cffread PUBLIC ${LIBXML2_LIBRARY})
 else ()
+    message("====IN (LINUX, CORRECT)=====")  
     add_dependencies(makeotf_cffread ${LIBXML2_TARGET})
     if (WIN32)
        target_link_libraries(makeotf_cffread PUBLIC ${LIBXML2_WIN_LIBRARIES})

c/makeotf/lib/hotconv/CMakeLists.txt

@@ -71,7 +71,7 @@ set_property(TARGET hotconv PROPERTY C_STANDARD 99)
 target_include_directories(hotconv PRIVATE AFTER $<$<COMPILE_LANGUAGE:CXX>:${ANTLR4_INCLUDE_DIRS}>)
 target_link_libraries(hotconv PUBLIC antlr4_static)
 
-if (${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(hotconv PUBLIC ${LIBXML2_LIBRARY})
 else ()
     add_dependencies(hotconv ${LIBXML2_TARGET})

c/makeotf/lib/pstoken/CMakeLists.txt

@@ -1,6 +1,6 @@
 add_library(makeotf_pstoken STATIC pstoken.c)
 
-if (${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(makeotf_pstoken PUBLIC ${LIBXML2_LIBRARY})
 else ()
     add_dependencies(makeotf_pstoken ${LIBXML2_TARGET})

c/makeotf/lib/typecomp/CMakeLists.txt

@@ -45,7 +45,7 @@ add_library(typecomp STATIC
     tc.c
 )
 
-if (${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(typecomp PUBLIC ${LIBXML2_LIBRARY})
 else ()
     add_dependencies(typecomp ${LIBXML2_TARGET})

c/makeotf/source/CMakeLists.txt

@@ -27,7 +27,7 @@ if (HAVE_M_LIB)
     target_link_libraries(makeotfexe PRIVATE m)
 endif ()
 
-if (${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(makeotfexe PUBLIC ${LIBXML2_LIBRARY})
 else ()
     if (WIN32)

c/mergefonts/source/CMakeLists.txt

@@ -9,7 +9,7 @@ target_include_directories(mergefonts PRIVATE ../../shared/include ../../shared/
 
 target_link_libraries(mergefonts PUBLIC tx_shared)
 
-if (${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(mergefonts PUBLIC ${LIBXML2_LIBRARY})
 else ()
     add_dependencies(mergefonts ${LIBXML2_TARGET})

c/rotatefont/source/CMakeLists.txt

@@ -9,7 +9,7 @@ target_include_directories(rotatefont PRIVATE ../../shared/include ../../shared/
 
 target_link_libraries(rotatefont PUBLIC tx_shared)
 
-if(${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(rotatefont PUBLIC ${LIBXML2_LIBRARY})
 else()
     add_dependencies(rotatefont ${LIBXML2_TARGET})

c/shared/source/CMakeLists.txt

@@ -3,9 +3,10 @@ include_directories(../include ../resource)
 MACRO(ADD_AFDKOLIB lm)
     file(GLOB sl_sources "${lm}/*")
     add_library(${lm} STATIC ${sl_sources})
-    if(NOT ${LibXml2_FOUND})
+    if((NOT ${LibXml2_FOUND}) OR "${CMAKE_SYSTEM}" MATCHES "Linux")
+        message("dependency being added...")
         add_dependencies(${lm} ${LIBXML2_TARGET})
-    endif(NOT ${LibXml2_FOUND})
+    endif((NOT ${LibXml2_FOUND}) OR "${CMAKE_SYSTEM}" MATCHES "Linux")
 ENDMACRO(ADD_AFDKOLIB)
 
 ADD_AFDKOLIB(absfont)
@@ -47,7 +48,7 @@ target_compile_definitions(t1write PRIVATE $<$<CONFIG:Debug>:T1W_DEBUG=1>)
 target_compile_definitions(ttread PRIVATE $<$<CONFIG:Debug>:TTR_DEBUG=1>)
 target_compile_definitions(tx_shared PRIVATE $<$<CONFIG:Debug>:CFW_DEBUG=1>)
 
-if(${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(tx_shared PUBLIC ${LIBXML2_LIBRARY})
 else()
     target_compile_definitions(tx_shared PUBLIC -DLIBXML_STATIC)

c/tx/source/CMakeLists.txt

@@ -8,7 +8,7 @@ add_executable(tx
 target_include_directories(tx PRIVATE ../../shared/include ../../shared/resource ../../shared/source/tx_shared)
 target_link_libraries(tx PUBLIC tx_shared)
 
-if(${LibXml2_FOUND})
+if ((${LibXml2_FOUND}) AND (NOT "${CMAKE_SYSTEM}" MATCHES "Linux"))
     target_link_libraries(tx PUBLIC ${LIBXML2_LIBRARY})
 else()
     add_dependencies(tx ${LIBXML2_TARGET})

cmake/ExternalLibXML2.cmake

@@ -43,7 +43,10 @@ set_target_properties(libxml2 PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${SOURCE_DIR}/include)
 target_include_directories(libxml2 INTERFACE ${SOURCE_DIR}/include INTERFACE ${BINARY_DIR})
 
-set(LIBXML2_INCLUDE_DIR ${SOURCE_DIR}/include ${BINARY_DIR})
+message("SOURCEDIR/INCLUDE: ${SOURCE_DIR}/include")
+message("BINARYDIR/INCLUDE: ${BINARY_DIR}")
+
+set(LIBXML2_STATIC_INCLUDE_DIR ${SOURCE_DIR}/include ${BINARY_DIR})
 
 set(LIBXML2_WIN_LIBRARIES wsock32 ws2_32 libxml2)
 

docs/FDK_Build_Notes.md

@@ -48,6 +48,9 @@ Note that unless you are using macOS or Windows you must have `libuuid` and its
 
 If the build is successful each program (e.g. makeotfexe) will be built as `build/bin/[program]`.  If you would like to install them in `/usr/local/bin` you can then run `cmake --build build -- install`.
 
+AFDKO uses libxml2 for parsing in tx. If libxml2 is not found in the system, it will be installed through CMake externally in `ExternalLibXML2.cmake` and statically linked. This is usually the case for Windows. 
+Currently, libxml2 will also be statically linked in Linux due to a [bug found in the linux python wheels when dynamically linked](https://github.com/adobe-type-tools/afdko/issues/1525).
+
 ### Noted CMake options
 
 These options can be added to the end of the first CMake command above: