I tried to build curl-7.65.1 on Windows 2008R2 64bit.
The build for library is finished but for curl.exe the warning is displayed
with following.
cd winbuild
nmake /F Makefile.vc mode=static WITH_MBEDTLS=static
MBEDTLS_PATH=..\..\mbedtls-2.7.10\build
...
link.exe /incremental:no
/libpath:"..\builds\libcurl-vc-x64-release-static-mbedtls-static-ipv6-sspi\lib"
...
MSVCRT.lib(cinitexe.obj) : warning LNK4098: defaultlib 'libcmt.lib'
conflicts with use of other libs; use /NODEFAULTLIB:library
After then, I tried to build other application but error occurs.
V0@@Z) already defined in LIBCMT.lib(typinfo.obj)
MSVCRT.lib(MSVCR90.dll) : error LNK2005: _strdup already defined in
LIBCMT.lib(strdup.obj)
MSVCRT.lib(MSVCR90.dll) : error LNK2005: _read already defined in
LIBCMT.lib(read.obj)
MSVCRT.lib(MSVCR90.dll) : error LNK2005: _write already defined in
LIBCMT.lib(write.obj)
MSVCRT.lib(MSVCR90.dll) : error LNK2005: _close already defined in
LIBCMT.lib(close.obj)
MSVCRT.lib(MSVCR90.dll) : error LNK2005: _open already defined in
LIBCMT.lib(open.obj)
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other
libs; use /NODEFAULTLIB:library
..\..\..\bin\win64\xxx.exe : fatal error LNK1169: one or more multiply
defined symbols found
In my research, the curl library with /MD option in spite of static.
https://docs.microsoft.com/en-us/cpp/build/reference/md-mt-ld-use-run-time-library?view=vs-2019
So, I made the patch. With it, for curl.exe no warning is
displayed and other application is built with no error.
Daiki
--- curl-7.65.1.orig/winbuild/Makefile.vc 2019-05-14 21:50:37.000000000 +0900
+++ curl-7.65.1/winbuild/Makefile.vc 2019-07-02 10:29:52.254305777 +0900
@@ -269,6 +269,7 @@ $(MODE):
@SET USE_WINSSL=$(USE_WINSSL)
# compatibility bit
@SET WITH_NGHTTP2=$(WITH_NGHTTP2)
+ @SET RTLIBCFG=$(MODE)
@$(MAKE) /NOLOGO /F MakefileBuild.vc
--- curl-7.65.1.orig/winbuild/MakefileBuild.vc 2019-05-14 21:50:37.000000000 +0900
+++ curl-7.65.1/winbuild/MakefileBuild.vc 2019-07-02 12:12:05.245529791 +0900
@@ -178,7 +178,7 @@ NGHTTP2_LIBS = nghttp2_static.lib
!IFDEF MBEDTLS_PATH
MBEDTLS_INC_DIR = $(MBEDTLS_PATH)\include
-MBEDTLS_LIB_DIR = $(MBEDTLS_PATH)\lib
+MBEDTLS_LIB_DIR = $(MBEDTLS_PATH)\library
MBEDTLS_LFLAGS = $(MBEDTLS_LFLAGS) "/LIBPATH:$(MBEDTLS_LIB_DIR)"
!ELSE
MBEDTLS_INC_DIR = $(DEVEL_INCLUDE)
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