Is your feature request related to a problem? Please describe.
I cant use vcpkg for android because a few ports(cairo/gettext/libiconv/...) that I need dont work for android.
Proposed solution
Lets try to get android working for ports of this type if it is possible.
Describe alternatives you've considered
For libiconv I made a cmake build instead that gets used for android, but configuring the headers is a real pain, not maintainable and very ugly.
Additional context
I tried a few things to get it to work (port was gettext):
Problem 1 - Backslash instead of slashes
Error
CMake Error at buildtrees/gettext/cmake-vars-arm64-android-rel.cmake.log:27 (set):
Syntax error in cmake code at
H:/DevTools/android-3rdParty/vcpkgFork/buildtrees/gettext/cmake-vars-arm64-android-rel.cmake.log:27
when parsing string
H:\DevTools\android-3rdParty\vcpkgFork\downloads\tools\powershell-core-7.0.3-windows;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\Wbem;C:\WINDOWS\system32\WindowsPowerShell\v1.0\;H:/DevTools/android-3rdParty/vcpkgFork/downloads/tools/winflexbison/0a14154bff-a8cf65db07;H:/DevTools/android-3rdParty/vcpkgFork/downloads/tools/ninja/1.10.1-windows;H:/DevTools/android-3rdParty/vcpkgFork/downloads/tools/ninja/1.10.1-windows
Proposed fix
diff --git a/scripts/get_cmake_vars/CMakeLists.txt b/scripts/get_cmake_vars/CMakeLists.txt
index 45a53989b..395231fbd 100644
--- a/scripts/get_cmake_vars/CMakeLists.txt
+++ b/scripts/get_cmake_vars/CMakeLists.txt
@@ -73,7 +73,7 @@ foreach(VAR IN LISTS VCPKG_VARS_TO_CHECK)
endforeach()
foreach(_env IN LISTS VCPKG_ENV_VARS_TO_CHECK)
- IF(WIN32)
+ IF(CMAKE_HOST_WIN32)
string(REPLACE "\\" "/" ENV_${_env} "$ENV{${_env}}")
string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_ENV_${_env} \"${ENV_${_env}}\")\n")
else()
Problem 2 - clang.exe is not in path
Error - config.log
...
configure:4615: compile clang.exe --version >&5
/usr/share/automake-1.16/compile: line 307: exec: clang.exe: not found
...
Workaround - dont strip the path away from the tools(likely better to add compiler root to path,
ANDROID_TOOLCHAIN_ROOT is not set so not sure how to do that here)
diff --git a/scripts/cmake/vcpkg_configure_make.cmake b/scripts/cmake/vcpkg_configure_make.cmake
index e7af4713c..b2be181b0 100644
--- a/scripts/cmake/vcpkg_configure_make.cmake
+++ b/scripts/cmake/vcpkg_configure_make.cmake
@@ -315,7 +315,11 @@ function(vcpkg_configure_make)
VCPKG_DETECTED_CMAKE_STRIP VCPKG_DETECTED_CMAKE_NM VCPKG_DETECTED_CMAKE_DLLTOOL VCPKG_DETECTED_CMAKE_RC_COMPILER)
foreach(prog IN LISTS progs)
if(${prog})
- get_filename_component(${prog} "${${prog}}" NAME)
+ if(VCPKG_TARGET_IS_ANDROID)
+ message("${prog}=${${prog}}")
+ else()
+ get_filename_component(${prog} "${${prog}}" NAME)
+ endif()
endif()
endforeach()
if (_csc_AUTOCONFIG OR _csc_USE_WRAPPERS) # without autotools we assume a custom configure script which correctly handles cl and lib. Otherwise the port needs to set CC|CXX|AR and probably CPP
Problem 3 - unsupported option '-fPIC' for target 'x86_64-w64-windows-gnu'
Error - config.log
...
configure:4646: checking whether the C compiler works
configure:4668: compile H:/DevTools/android-ndk/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe -g -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wformat -Werror=format-security -fPIC -O0 -fno-limit-debug-info -DANDROID -D_FORTIFY_SOURCE=2 -LH:/DevTools/android-3rdParty/vcpkgFork/installed/arm64-android/debug/lib -LH:/DevTools/android-3rdParty/vcpkgFork/installed/arm64-android/debug/lib/manual-link conftest.c -latomic -lm >&5
clang: error: unsupported option '-fPIC' for target 'x86_64-w64-windows-gnu'
...
No solution - just removed fPIC for testing if it could work without - IN_TRY_COMPILE looks like it is supposed to work around the problem, no idea where to apply it
diff --git a/scripts/toolchains/android.cmake b/scripts/toolchains/android.cmake
index c721c2c42..9bcf60da0 100644
--- a/scripts/toolchains/android.cmake
+++ b/scripts/toolchains/android.cmake
@@ -42,7 +42,7 @@ if(NOT _VCPKG_ANDROID_TOOLCHAIN)
set(_VCPKG_ANDROID_TOOLCHAIN 1)
get_property( _CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE )
if(NOT _CMAKE_IN_TRY_COMPILE)
- string(APPEND CMAKE_C_FLAGS " -fPIC ${VCPKG_C_FLAGS} ")
+ string(APPEND CMAKE_C_FLAGS " ${VCPKG_C_FLAGS} ") # " -fPIC ${VCPKG_C_FLAGS} "
string(APPEND CMAKE_CXX_FLAGS " -fPIC ${VCPKG_CXX_FLAGS} ")
string(APPEND CMAKE_C_FLAGS_DEBUG " ${VCPKG_C_FLAGS_DEBUG} ")
string(APPEND CMAKE_CXX_FLAGS_DEBUG " ${VCPKG_CXX_FLAGS_DEBUG} ")
Problem 4 - Missing libraries
Error - config.log
configure:4646: checking whether the C compiler works
configure:4668: compile H:/DevTools/android-ndk/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe -g -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wformat -Werror=format-security -O0 -fno-limit-debug-info -DANDROID -D_FORTIFY_SOURCE=2 -LH:/DevTools/android-3rdParty/vcpkgFork/installed/arm64-android/debug/lib -LH:/DevTools/android-3rdParty/vcpkgFork/installed/arm64-android/debug/lib/manual-link conftest.c -latomic -lm >&5
/usr/bin/ld: cannot find crt2.o: No such file or directory
/usr/bin/ld: cannot find crtbegin.o: No such file or directory
/usr/bin/ld: cannot find -latomic
/usr/bin/ld: cannot find -lm
/usr/bin/ld: cannot find -lssp_nonshared
/usr/bin/ld: cannot find -lssp
/usr/bin/ld: cannot find -lmingw32
/usr/bin/ld: cannot find -lgcc
/usr/bin/ld: cannot find -lgcc_eh
/usr/bin/ld: cannot find -lmoldname
/usr/bin/ld: cannot find -lmingwex
/usr/bin/ld: cannot find -lmsvcrt
/usr/bin/ld: cannot find -ladvapi32
/usr/bin/ld: cannot find -lshell32
/usr/bin/ld: cannot find -luser32
/usr/bin/ld: cannot find -lkernel32
/usr/bin/ld: cannot find -lmingw32
/usr/bin/ld: cannot find -lgcc
/usr/bin/ld: cannot find -lgcc_eh
/usr/bin/ld: cannot find -lmoldname
/usr/bin/ld: cannot find -lmingwex
/usr/bin/ld: cannot find -lmsvcrt
/usr/bin/ld: cannot find crtend.o: No such file or directory
Fix/Workaround
At this point I am completely lost, it looks like it is trying to link windows libraries?
Is your feature request related to a problem? Please describe.
I cant use vcpkg for android because a few ports(cairo/gettext/libiconv/...) that I need dont work for android.
Proposed solution
Lets try to get android working for ports of this type if it is possible.
Describe alternatives you've considered
For libiconv I made a cmake build instead that gets used for android, but configuring the headers is a real pain, not maintainable and very ugly.
Additional context
I tried a few things to get it to work (port was gettext):
Problem 1 - Backslash instead of slashes
Error
Proposed fix
Problem 2 - clang.exe is not in path
Error - config.log
Workaround - dont strip the path away from the tools(likely better to add compiler root to path,
ANDROID_TOOLCHAIN_ROOT is not set so not sure how to do that here)
Problem 3 - unsupported option '-fPIC' for target 'x86_64-w64-windows-gnu'
Error - config.log
No solution - just removed fPIC for testing if it could work without - IN_TRY_COMPILE looks like it is supposed to work around the problem, no idea where to apply it
Problem 4 - Missing libraries
Error - config.log
Fix/Workaround
At this point I am completely lost, it looks like it is trying to link windows libraries?