#272: Build errors on Windows
-------------------------+--------------------
Reporter: kdekker | Owner:
Type: defect | Status: new
Priority: normal | Milestone: 1.4.3
Component: misc | Version: 1.4.2
Keywords: build error | Blocked By:
Blocks: |
-------------------------+--------------------
1. Visual Studio 2010 SP1 complains about /Og (on both 32-bit and 64-bit
build) when building libssh2 version 1.4.3.
The errors happen during:
a. during compilation:
cl -c /nologo /GL /Zi /EHsc /Og /Oi /O2 /Oy /GF /Y- /MD /DNDEBUG
/Iwin32 /Iinclude
/IW:\common\thirdparty\OpenSSL\build\Windows\Win32\include
-DLIBSSH2_HAVE_ZLIB=1
/IW:\common\thirdparty\zlib\build\Windows\Win32\..\include -DLIBSSH2_WIN32
/Fo"Release\src\\" src\channel.c src\comp.c src\crypt.c src\hostkey.c
src\kex.c src\mac.c src\misc.c src\packet.c src\publickey.c src\scp.c
src\session.c src\sftp.c src\userauth.c src\transport.c src\version.c
src\knownhost.c src\agent.c src\openssl.c src\libgcrypt.c src\pem.c
src\keepalive.c src\global.c
1>cl : Command line warning D9035: option 'Og' has been deprecated and
will be removed in a future release
b. during link:
1> cl -o libssh2.dll /nologo /GL /Zi /EHsc /Og /Oi /O2 /Oy /GF /Y-
/MD /DNDEBUG /Iwin32 /Iinclude
/IW:\common\thirdparty\OpenSSL\build\Windows\Win32\include
-DLIBSSH2_HAVE_ZLIB=1
/IW:\common\thirdparty\zlib\build\Windows\Win32\..\include -DLIBSSH2_WIN32
/DEBUG /LD Release\src\channel.obj Release\src\comp.obj
Release\src\crypt.obj Release\src\hostkey.obj Release\src\kex.obj
Release\src\mac.obj Release\src\misc.obj Release\src\packet.obj
Release\src\publickey.obj Release\src\scp.obj Release\src\session.obj
Release\src\sftp.obj Release\src\userauth.obj Release\src\transport.obj
Release\src\version.obj Release\src\knownhost.obj Release\src\agent.obj
Release\src\openssl.obj Release\src\libgcrypt.obj Release\src\pem.obj
Release\src\keepalive.obj Release\src\global.obj
Release\src\libssh2.res
W:\common\thirdparty\OpenSSL\build\Windows\Win32\lib\libeay32.lib
W:\common\thirdparty\OpenSSL\build\Windows\Win32\lib\ssleay32.lib
ws2_32.lib user32.lib
W:\common\thirdparty\zlib\build\Windows\Win32\lib\zlib.lib
1>cl : Command line warning D9035: option 'o' has been deprecated and will
be removed in a future release
1>cl : Command line warning D9035: option 'Og' has been deprecated and
will be removed in a future release
1> Creating library libssh2.lib and object libssh2.exp
2. Link errors:
1>libeay32.lib(cryptlib.obj) : error LNK2001: unresolved external symbol
__imp__DeregisterEventSource@4
1>libeay32.lib(cryptlib.obj) : error LNK2001: unresolved external symbol
__imp__ReportEventA@36
1>libeay32.lib(cryptlib.obj) : error LNK2001: unresolved external symbol
__imp__RegisterEventSourceA@8
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__DeleteDC@4
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__DeleteObject@4
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__GetBitmapBits@12
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__BitBlt@36
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__GetObjectA@12
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__SelectObject@8
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__CreateCompatibleBitmap@12
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__GetDeviceCaps@8
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__CreateCompatibleDC@4
1>libeay32.lib(rand_win.obj) : error LNK2001: unresolved external symbol
__imp__CreateDCA@16
1>libssh2.dll : fatal error LNK1120: 13 unresolved externals
1>NMAKE : fatal error U1077: '"c:\Program Files (x86)\Microsoft Visual
Studio 10.0\VC\bin\cl.EXE"' : return code '0x2'
To address these issues, I propose a change on config.mk, see attached
file.
I also made some makefile variables configurable by setting environment
variables (to find e.g. OpenSSL and zlib directories).
You also cannot rely on default libraries, so I had to add advapi32 and
gdi32 libraries to get the libssh2 DLL linking.
3. static libssh2.lib could not be build. I added a static library target
to src\NMakfile.
Affected changed files are attached. Diff (in diff format) is shown below.
diff src\NMakefile.org src\NMakefile
6a7,9
> AR = lib
> ARFLAGS = -nologo /LTCG
>
8d10
<
9a12
> STATICLIB=$(INTDIR)\libssh2.lib
10a14
> !if "$(BUILD_STATIC_LIB)" == ""
11a16,18
> !else
> all: $(STATICLIB)
> !endif
15a23,25
> $(STATICLIB): $(OBJECTS)
> $(AR) $(ARFLAGS) -out:$@ $(OBJECTS)
>
diff win32\config.mk.org win32\config.mk
2a3
> !if "$(OPENSSLINC)" == ""
3a5,7
> !endif
>
> !if "$(OPENSSLLIB)" == ""
5c9,11
<
---
> !endif
>
> !if "$(ZLIBINC)" == ""
6a13,15
> !endif
>
> !if "$(ZLIBLIB)" == ""
7a17
> !endif
18c28
< CPPFLAGS=/Og /Oi /O2 /Oy /GF /Y- /MD /DNDEBUG
---
> CPPFLAGS=/Oi /O2 /Oy /GF /Y- /MD /DNDEBUG
22c32
< CPPFLAGS=/nologo /GL /Zi /EHsc $(CPPFLAGS) /Iwin32 /Iinclude
/I$(OPENSSLINC) $(ZLIBINC) -DLIBSSH2_WIN32
---
> CPPFLAGS=/nologo /GL /Zi /EHsc $(CPPFLAGS) /Iwin32 /Iinclude
/I$(OPENSSLINC) $(ZLIBINC)
26c36
< LIBS=$(OPENSSLLIB)\libeay32.lib $(OPENSSLLIB)\ssleay32.lib ws2_32.lib
user32.lib $(ZLIBLIB)\zlib.lib
---
> LIBS=$(OPENSSLLIB)\libeay32.lib $(OPENSSLLIB)\ssleay32.lib
$(ZLIBLIB)\zlib.lib ws2_32.lib user32.lib advapi32.lib gdi32.lib
--
Ticket URL: <https://trac.libssh2.org/ticket/272>
libssh2 <https://trac.libssh2.org/>
C library for writing portable SSH2 clients
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