Fix build from source on alpine linux

.circleci/config.yml

@@ -26,6 +26,7 @@ jobs:
       - run: | # checkout merge commit, set versioning info and Make.user variables
           git config --global --unset url."ssh://[email protected]".insteadOf &&
           if [ -n "$CIRCLE_PULL_REQUEST" ]; then
+            git remote set-url origin [email protected]:JuliaLang/julia.git &&
             git fetch origin +refs/pull/$(basename $CIRCLE_PULL_REQUEST)/merge &&
             git checkout -qf FETCH_HEAD;
           fi &&

deps/blas.mk

@@ -80,7 +80,13 @@ endif
 # Do not overwrite the "-j" flag
 OPENBLAS_BUILD_OPTS += MAKE_NB_JOBS=0
 
-$(BUILDDIR)/$(OPENBLAS_SRC_DIR)/build-configured: $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/source-extracted
+# Fix build on musl libc, from https://github.com/xianyi/OpenBLAS/pull/1257
+# remove when upgrading past openblas v0.2.20
+$(BUILDDIR)/$(OPENBLAS_SRC_DIR)/openblas-musl-PR1257.patch-applied: $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/source-extracted
+	cd $(BUILDDIR)/$(OPENBLAS_SRC_DIR) && patch -p1 -f < $(SRCDIR)/patches/openblas-musl-PR1257.patch
+	echo 1 > $@
+
+$(BUILDDIR)/$(OPENBLAS_SRC_DIR)/build-configured: $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/openblas-musl-PR1257.patch-applied
 	perl -i -ple 's/^\s*(EXTRALIB\s*\+=\s*-lSystemStubs)\s*$$/# $$1/g' $(dir $<)/Makefile.system
 	echo 1 > $@
 

deps/llvm.mk

@@ -467,6 +467,8 @@ $(eval $(call LLVM_PATCH,llvm-3.9-c_api_nullptr))
 $(eval $(call LLVM_PATCH,llvm-PPC-addrspaces)) # PPC
 $(eval $(call LLVM_PATCH,llvm-D30114)) # PPC remove for 5.0
 $(eval $(call LLVM_PATCH,llvm-PR36292)) # PPC fixes #26249, remove for 6.0
+$(eval $(call LLVM_PATCH,llvm-D39297-musl-dynamiclibrary-pre5)) # Remove for 6.0
+$(eval $(call LLVM_PATCH,llvm-D28476-musl-targetlibraryinfo_3.9)) # Remove for 5.0
 ifeq ($(BUILD_LLVM_CLANG),1)
 $(eval $(call LLVM_PATCH,compiler_rt-3.9-glibc_2.25.90)) # Remove for 5.0
 endif
@@ -498,6 +500,8 @@ $(eval $(call LLVM_PATCH,llvm-D42262-jumpthreading-not-i1))
 $(eval $(call LLVM_PATCH,llvm-PPC-addrspaces)) # PPC
 $(eval $(call LLVM_PATCH,llvm-D30114)) # PPC remove for 5.0
 $(eval $(call LLVM_PATCH,llvm-PR36292)) # PPC fixes #26249, remove for 6.0
+$(eval $(call LLVM_PATCH,llvm-D39297-musl-dynamiclibrary-pre5)) # Remove for 6.0
+$(eval $(call LLVM_PATCH,llvm-D28476-musl-targetlibraryinfo_4.0)) # Remove for 5.0
 ifeq ($(BUILD_LLVM_CLANG),1)
 $(eval $(call LLVM_PATCH,compiler_rt-3.9-glibc_2.25.90)) # Remove for 5.0
 endif
@@ -514,6 +518,7 @@ $(eval $(call LLVM_PATCH,llvm-D38765-gvn_5.0)) # Remove for 6.0
 $(eval $(call LLVM_PATCH,llvm-D42262-jumpthreading-not-i1)) # remove for 7.0
 $(eval $(call LLVM_PATCH,llvm-PPC-addrspaces)) # PPC
 $(eval $(call LLVM_PATCH,llvm-PR36292-5.0)) # PPC fixes #26249, remove for 6.0
+$(eval $(call LLVM_PATCH,llvm-D39297-musl-dynamiclibrary)) # Remove for 6.0
 else ifeq ($(LLVM_VER_SHORT),6.0)
 $(eval $(call LLVM_PATCH,llvm-D27629-AArch64-large_model_4.0))
 $(eval $(call LLVM_PATCH,llvm-D34078-vectorize-fdiv))

deps/patches/llvm-D39297-musl-dynamiclibrary-pre5.patch

@@ -0,0 +1,40 @@
+From ae8900a8833835309aecb0a3d947c2ae46fd86c3 Mon Sep 17 00:00:00 2001
+From: Keno Fischer <[email protected]>
+Date: Thu, 26 Oct 2017 16:44:13 +0000
+Subject: [PATCH] [DynamicLibrary] Fix build on musl libc
+
+Summary:
+On musl libc, stdin/out/err are defined as `FILE* const` globals,
+and their address is not implicitly convertible to void *,
+or at least gcc 6 doesn't allow it, giving errors like:
+
+```
+error: cannot initialize return object of type 'void *' with an rvalue of type 'FILE *const *' (aka '_IO_FILE *const *')
+    EXPLICIT_SYMBOL(stderr);
+    ^~~~~~~~~~~~~~~~~~~~~~~
+```
+
+Add an explicit cast to fix that problem.
+
+Reviewers: marsupial, krytarowski, dim
+Reviewed By: dim
+Differential Revision: https://reviews.llvm.org/D39297
+
+git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316672 91177308-0d34-0410-b5e6-96231b3b80d8
+---
+ lib/Support/Unix/DynamicLibrary.inc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/Support/Unix/DynamicLibrary.inc b/lib/Support/Unix/DynamicLibrary.inc
+index f05103ccd1eb..029451f347e8 100644
+--- a/lib/Support/DynamicLibrary.cpp
++++ b/lib/Support/DynamicLibrary.cpp
+@@ -71,7 +71,7 @@ void *DynamicLibrary::HandleSet::DLSym(void *Handle, const char *Symbol) {
+
+ // This macro returns the address of a well-known, explicit symbol
+ #define EXPLICIT_SYMBOL(SYM) \
+-   if (!strcmp(symbolName, #SYM)) return &SYM
++   if (!strcmp(symbolName, #SYM)) return (void*)&SYM
+
+ // On linux we have a weird situation. The stderr/out/in symbols are both
+ // macros and global variables because of standards requirements. So, we

deps/patches/llvm-D39297-musl-dynamiclibrary.patch

@@ -0,0 +1,40 @@
+From ae8900a8833835309aecb0a3d947c2ae46fd86c3 Mon Sep 17 00:00:00 2001
+From: Keno Fischer <[email protected]>
+Date: Thu, 26 Oct 2017 16:44:13 +0000
+Subject: [PATCH] [DynamicLibrary] Fix build on musl libc
+
+Summary:
+On musl libc, stdin/out/err are defined as `FILE* const` globals,
+and their address is not implicitly convertible to void *,
+or at least gcc 6 doesn't allow it, giving errors like:
+
+```
+error: cannot initialize return object of type 'void *' with an rvalue of type 'FILE *const *' (aka '_IO_FILE *const *')
+    EXPLICIT_SYMBOL(stderr);
+    ^~~~~~~~~~~~~~~~~~~~~~~
+```
+
+Add an explicit cast to fix that problem.
+
+Reviewers: marsupial, krytarowski, dim
+Reviewed By: dim
+Differential Revision: https://reviews.llvm.org/D39297
+
+git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316672 91177308-0d34-0410-b5e6-96231b3b80d8
+---
+ lib/Support/Unix/DynamicLibrary.inc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/Support/Unix/DynamicLibrary.inc b/lib/Support/Unix/DynamicLibrary.inc
+index f05103ccd1eb..029451f347e8 100644
+--- a/lib/Support/Unix/DynamicLibrary.inc
++++ b/lib/Support/Unix/DynamicLibrary.inc
+@@ -71,7 +71,7 @@ void *DynamicLibrary::HandleSet::DLSym(void *Handle, const char *Symbol) {
+ // Must declare the symbols in the global namespace.
+ static void *DoSearch(const char* SymbolName) {
+ #define EXPLICIT_SYMBOL(SYM) \
+-   extern void *SYM; if (!strcmp(SymbolName, #SYM)) return &SYM
++   extern void *SYM; if (!strcmp(SymbolName, #SYM)) return (void*)&SYM
+
+   // If this is darwin, it has some funky issues, try to solve them here.  Some
+   // important symbols are marked 'private external' which doesn't allow

deps/patches/openblas-musl-PR1257.patch

@@ -0,0 +1,65 @@
+From 63cfa32691680505e6b9daf0997755178ddd3144 Mon Sep 17 00:00:00 2001
+From: Martin Kroeker <[email protected]>
+Date: Mon, 31 Jul 2017 21:02:43 +0200
+Subject: [PATCH] Rework __GLIBC_PREREQ checks to avoid breaking non-glibc
+ builds
+
+---
+ driver/others/memory.c | 20 ++++++++++----------
+ 1 file changed, 10 insertions(+), 10 deletions(-)
+
+diff --git a/driver/others/memory.c b/driver/others/memory.c
+index b5b58b6fd..661f7c4eb 100644
+--- a/driver/others/memory.c
++++ b/driver/others/memory.c
+@@ -155,7 +155,6 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ #ifdef DYNAMIC_ARCH
+ gotoblas_t *gotoblas = NULL;
+ #endif
+-
+ extern void openblas_warning(int verbose, const char * msg);
+
+ #ifndef SMP
+@@ -187,25 +186,24 @@ int i,n;
+
+ #if !defined(__GLIBC_PREREQ)
+    return nums;
+-#endif   
+-#if !__GLIBC_PREREQ(2, 3)
++#else
++ #if !__GLIBC_PREREQ(2, 3)
+    return nums;
+-#endif   
++ #endif
+
+-#if !__GLIBC_PREREQ(2, 7)
++ #if !__GLIBC_PREREQ(2, 7)
+   ret = sched_getaffinity(0,sizeof(cpu_set_t), cpusetp);
+   if (ret!=0) return nums;
+   n=0;
+-#if !__GLIBC_PREREQ(2, 6)  
++  #if !__GLIBC_PREREQ(2, 6)
+   for (i=0;i<nums;i++)
+      if (CPU_ISSET(i,cpusetp)) n++;
+   nums=n;   
+-#else
++  #else
+   nums = CPU_COUNT(sizeof(cpu_set_t),cpusetp);
+-#endif
++  #endif
+   return nums;
+-#endif
+-
++ #else
+   cpusetp = CPU_ALLOC(nums);
+   if (cpusetp == NULL) return nums;
+   size = CPU_ALLOC_SIZE(nums);
+@@ -214,6 +212,8 @@ int i,n;
+   nums = CPU_COUNT_S(size,cpusetp);
+   CPU_FREE(cpusetp);
+   return nums;
++ #endif
++#endif
+ }
+ #endif
+ #endif

deps/tools/jldownload

@@ -30,7 +30,7 @@ CACHE_URL="$CACHE_HOST/$URL"
 
 if [ -x "$CURL" ] && $CURL -V >/dev/null; then
     GETURL="$CURL $CURL_OPTS"
-elif [ -x "$WGET" ] && $WGET -V >/dev/null; then
+elif [ -x "$WGET" ] && $WGET --help >/dev/null 2>&1; then
     GETURL="$WGET $WGET_OPTS"
 elif [ -x "$FETCH" ]; then
     GETURL="$FETCH $FETCH_OPTS"