manylinux-x86: Fix build of Openssl and CMake

This commit fixes the error reported below by ensuring openssl and CMake
are configured and build as x86 binaries.

It also removes the download of CMake binaries that was introduced
by mistake in 1354fe2 (manylinux-x86: Initial addition).

Error:

```
Configured for linux-x86_64.
making all in crypto...
make[1]: Entering directory `/usr/src/openssl-1.0.2j/crypto'
/usr/bin/perl ../util/mkbuildinf.pl "gcc -I. -I.. -I../include  -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -Wa,--noexecstack -m64 -DL_ENDIAN -O3 -Wall -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DRC4_ASM -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -DGHASH_ASM -DECP_NISTZ256_ASM" "linux-x86_64" >buildinf.h
gcc -I. -I.. -I../include  -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -Wa,--noexecstack -m64 -DL_ENDIAN -O3 -Wall -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DRC4_ASM -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -DGHASH_ASM -DECP_NISTZ256_ASM   -c -o cryptlib.o cryptlib.c
cryptlib.c:1:0: sorry, unimplemented: 64-bit mode not compiled in
 /* crypto/cryptlib.c */
 ^
make[1]: *** [cryptlib.o] Error 1
```

common.docker

@@ -8,24 +8,26 @@ WORKDIR /usr/src
 RUN wget https://www.openssl.org/source/openssl-1.0.2j.tar.gz && \
   tar -xzvf openssl-1.0.2j.tar.gz && \
   cd openssl-1.0.2j && \
-  ./config && \
+  WRAPPER=$([[ $DEFAULT_DOCKCROSS_IMAGE == "dockcross/manylinux-x86" ]] && echo "linux32") && \
-  make && \
+  CONFIG_FLAG=$([[ $DEFAULT_DOCKCROSS_IMAGE == "dockcross/manylinux-x86" ]] && echo "-m32") && \
+  ${WRAPPER} ./config $CONFIG_FLAG && \
+  ${WRAPPER} make && \
   cd .. && \
   git clone git://cmake.org/cmake.git CMake && \
   cd CMake && \
   git checkout ab2ae4823c3b60347825da4b851cd4e676f8bed1 && \
   mkdir /usr/src/CMake-build && \
   cd /usr/src/CMake-build && \
-  /usr/src/CMake/bootstrap \
+  ${WRAPPER} /usr/src/CMake/bootstrap \
     --parallel=$(grep -c processor /proc/cpuinfo) \
     --prefix=/usr && \
-  make -j$(grep -c processor /proc/cpuinfo) && \
+  ${WRAPPER} make -j$(grep -c processor /proc/cpuinfo) && \
-  ./bin/cmake \
+  ${WRAPPER} ./bin/cmake \
     -DCMAKE_BUILD_TYPE:STRING=Release \
     -DCMAKE_USE_OPENSSL:BOOL=ON \
     -DOPENSSL_ROOT_DIR:PATH=/usr/src/openssl-1.0.2j \
     . && \
-  make install && \
+  ${WRAPPER} make install && \
   cd .. && rm -rf CMake* && rm -rf /usr/src/openssl-1.0.2j
 
 RUN git clone "https://github.com/ninja-build/ninja.git" && \

manylinux-x64/Dockerfile.in

@@ -1,6 +1,8 @@
 FROM quay.io/pypa/manylinux1_x86_64:latest
 MAINTAINER Matt McCormick "matt.mccormick@kitware.com"
 
+ENV DEFAULT_DOCKCROSS_IMAGE dockcross/manylinux-x64
+
 #include "common.docker"
 
 #include "common.manylinux"
@@ -18,7 +20,6 @@ COPY linux-x64/${CROSS_TRIPLE}-noop.sh /usr/bin/${CROSS_TRIPLE}-noop
 
 COPY manylinux-x64/Toolchain.cmake ${CROSS_ROOT}/../lib/
 ENV CMAKE_TOOLCHAIN_FILE ${CROSS_ROOT}/../lib/Toolchain.cmake
-ENV DEFAULT_DOCKCROSS_IMAGE dockcross/manylinux-x64
 
 # Build-time metadata as defined at http://label-schema.org
 ARG BUILD_DATE

manylinux-x86/Dockerfile.in

@@ -1,6 +1,8 @@
 FROM quay.io/pypa/manylinux1_i686:latest
 MAINTAINER Matt McCormick "matt.mccormick@kitware.com"
 
+ENV DEFAULT_DOCKCROSS_IMAGE dockcross/manylinux-x86
+
 #include "common.docker"
 
 #include "common.manylinux"
@@ -18,12 +20,6 @@ COPY linux-x86/${CROSS_TRIPLE}-noop.sh /usr/bin/${CROSS_TRIPLE}-noop
 
 COPY manylinux-x86/Toolchain.cmake ${CROSS_ROOT}/../lib/
 ENV CMAKE_TOOLCHAIN_FILE ${CROSS_ROOT}/../lib/Toolchain.cmake
-ENV DEFAULT_DOCKCROSS_IMAGE dockcross/manylinux-x86
-
-RUN curl -O https://cmake.org/files/v3.6/cmake-3.6.2-Linux-i386.tar.gz && \
-   tar xzf cmake-3.6.2-Linux-i386.tar.gz && \
-   cp -a cmake-3.6.2-Linux-i386/* /usr/ && \
-   rm -rf cmake-3.6.2-Linux-i386
 
 COPY linux-x86/linux32-entrypoint.sh /dockcross/
 ENTRYPOINT ["/dockcross/linux32-entrypoint.sh"]