Auto merge of #28651 - dotdash:exhaustive_match, r=eddyb

[rust.git] / configure

diff --git a/configure b/configure
index 604c1961174be1d19708973f099e9ebb55fdc101..fa2117dcc1d3d0de1ad757e1fdbda41361b36aeb 100755 (executable)
--- a/configure
+++ b/configure
@@ -885,6 +885,28 @@ then
     CFG_DISABLE_JEMALLOC=1
 fi
 
+# default gcc version under OpenBSD maybe too old, try using egcc, which is a
+# gcc version from ports
+if [ $CFG_OSTYPE = unknown-openbsd ]
+then
+    if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
+        step_msg "older GCC found, try with egcc instead"
+
+        # probe again but using egcc
+        probe CFG_GCC egcc
+
+        # and use egcc/eg++ for CC/CXX too if it was found
+        # (but user setting has priority)
+        if [ -n "$CFG_GCC" ]; then
+            CC="${CC:-egcc}"
+            CXX="${CXX:-eg++}"
+        fi
+    fi
+
+    step_msg "on OpenBSD, disabling jemalloc"
+    CFG_DISABLE_JEMALLOC=1
+fi
+
 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 # system, so if we find that gcc is clang, we should just use clang directly.
 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
@@ -1073,6 +1095,12 @@ envopt CPP
 envopt CFLAGS
 envopt CXXFLAGS
 
+# stdc++ name in use
+# used to manage non-standard name (on OpenBSD for example)
+program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
+CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
+putvar CFG_STDCPP_NAME
+
 # a little post-processing of various config values
 CFG_PREFIX=${CFG_PREFIX%/}
 CFG_MANDIR=${CFG_MANDIR%/}
@@ -1169,12 +1197,21 @@ do
             #
             # Consequently here we try to detect when that happens and print an
             # error if it does.
-            if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/'
+            if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/' > /dev/null
             then
-                err "python is silently translating windows paths to MSYS paths \
-                     and the build will fail if this python is used.\n\n \
-                     Either an official python install must be used or an \
-                     alternative python package in MinGW must be used."
+                err "
+
+python is silently translating windows paths to MSYS paths \
+and the build will fail if this python is used.
+
+Either an official python install must be used or an \
+alternative python package in MinGW must be used.
+
+If you are building under msys2 try installing the mingw-w64-x86_64-python2 \
+package instead of python2:
+
+$ pacman -R python2 && pacman -S mingw-w64-x86_64-python2
+"
             fi
 
             # MSVC requires cmake because that's how we're going to build LLVM
@@ -1185,10 +1222,19 @@ do
             # detect that here and error.
             if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
             then
-                err "cmake does not support Visual Studio generators.\n\n \
-                     This is likely due to it being an msys/cygwin build of cmake, \
-                     rather than the required windows version, built using MinGW \
-                     or Visual Studio."
+                err "
+
+cmake does not support Visual Studio generators.
+
+This is likely due to it being an msys/cygwin build of cmake, \
+rather than the required windows version, built using MinGW \
+or Visual Studio.
+
+If you are building under msys2 try installing the mingw-w64-x86_64-cmake \
+package instead of cmake:
+
+$ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
+"
             fi
 
             # Use the REG program to figure out where VS is installed
@@ -1249,6 +1295,12 @@ do
             putvar CFG_MSVC_LIB_PATH_${bits}
             ;;
 
+        *-rumprun-netbsd)
+            step_msg "targeting rumprun-netbsd, disabling jemalloc"
+            CFG_DISABLE_JEMALLOC=1
+            putvar CFG_DISABLE_JEMALLOC
+            ;;
+
         *)
             ;;
     esac