Drop Fedora version to 25.

Author: chrisseaton

CHANGELOG.md

@@ -33,6 +33,10 @@ Changes:
 
 * Now using the native version of Psych.
 
+* The supported version of Fedora has been dropped to 25, and the supported
+  version of LLVM to 3.8, due to LLVM incompatibilities. The instructions for
+  installing `libssl` have changed to match.
+
 # 0.33, April 2018
 
 New features:

README.md

@@ -86,7 +86,7 @@ TruffleRuby is actively tested on these systems:
 
 * Oracle Linux 7
 * Ubuntu 16.04 LTS
-* Fedora 26
+* Fedora 25
 * macOS 10.13
 
 You need to [install LLVM](doc/user/installing-llvm.md) to build and run C

doc/user/installing-libssl.md

@@ -31,18 +31,9 @@ install `openssl-devel`:
 sudo dnf install openssl-devel
 ```
 
-However, on Fedora 26 or more recent, the default openssl is 1.1.0 which is too
-recent. A workaround is to install the compatibility openssl 1.0.
-
-```
-# Make sure the 1.1.0 headers are not installed as they would conflict
-sudo dnf remove openssl-devel
-# Install openssl 1.0
-sudo dnf install compat-openssl10-devel
-```
-
-We recommend `compat-openssl10-devel` instead of `compat-openssl10`, because the
-latter doesn't seem to put the shared library in a place where we can find it.
+We recommend `openssl-devel` instead of `openssl`, even though we aren't using
+it for development because the latter doesn't seem to put the shared library in
+a place where we can find it.
 
 ## macOS
 

doc/user/installing-llvm.md

@@ -48,7 +48,7 @@ installing `libc++` seems to introduce some system conflicts.
 
 ## Fedora
 
-The tested version of LLVM for Fedora is 4.0.1.
+The tested version of LLVM for Fedora is 3.8.
 
 For building C extensions you need to install:
 

test/truffle/docker/fedora/Dockerfile

@@ -1,12 +1,12 @@
-FROM fedora:26
+FROM fedora:25
 
 MAINTAINER [email protected]
 
 # We need a conventional locale for testing
 ENV LANG=en_US.UTF-8
 
-# Dependencies for using openssl (compat-openssl10-devel so we get the /usr/lib64/libssl.so symlink)
-RUN dnf install -y compat-openssl10-devel
+# Dependencies for using openssl
+RUN dnf install -y openssl-devel
 
 # Dependencies for building C extensions
 RUN dnf install -y clang llvm

tool/docker/fedora/Dockerfile

@@ -1,4 +1,4 @@
-FROM fedora:26
+FROM fedora:25
 
 MAINTAINER [email protected]
 
@@ -12,10 +12,10 @@ RUN dnf install -y git
 RUN dnf install -y java-1.8.0-openjdk-devel java-1.8.0-openjdk-openjfx java-atk-wrapper
 
 # Other dependencies for building a JDK
-RUN dnf install -y gcc libstdc++-static
+RUN dnf install -y make gcc libstdc++-static
 
-# Dependencies for using openssl (compat-openssl10-devel so we get the /usr/lib64/libssl.so symlink)
-RUN dnf install -y compat-openssl10-devel
+# Dependencies for using openssl
+RUN dnf install -y openssl-devel
 
 # Dependencies for building C extensions
 RUN dnf install -y clang llvm