diff --git a/pkgs/development/libraries/science/math/atlas/default.nix b/pkgs/development/libraries/science/math/atlas/default.nix
index f4bda4f4735..6eb72f2ed64 100644
--- a/pkgs/development/libraries/science/math/atlas/default.nix
+++ b/pkgs/development/libraries/science/math/atlas/default.nix
@@ -63,7 +63,8 @@ stdenv.mkDerivation {
   # performance timings. We ignore that check, however, because with binaries
   # being pre-built on Hydra those timings aren't accurate for the local
   # machine in the first place.
-  patches = optional tolerateCpuTimingInaccuracy ./disable-timing-accuracy-check.patch;
+  patches = optional tolerateCpuTimingInaccuracy ./disable-timing-accuracy-check.patch
+    ++ optional stdenv.isDarwin ./tmpdir.patch;
 
   # Configure outside of the source directory.
   preConfigure = ''
diff --git a/pkgs/development/libraries/science/math/atlas/tmpdir.patch b/pkgs/development/libraries/science/math/atlas/tmpdir.patch
new file mode 100644
index 00000000000..be571b94300
--- /dev/null
+++ b/pkgs/development/libraries/science/math/atlas/tmpdir.patch
@@ -0,0 +1,276 @@
+diff --git a/CONFIG/ARCHS/negflt.c b/CONFIG/ARCHS/negflt.c
+index e5b7871..d45e387 100644
+--- a/CONFIG/ARCHS/negflt.c
++++ b/CONFIG/ARCHS/negflt.c
+@@ -239,7 +239,7 @@ void NegFile(char *fnam, int N, int *cols)
+    FILE *fpin, *fpout;
+    WORDS *wp0, *wp;
+ 
+-   tnam = tmpnam(NULL);
++   tnam = tempnam(NULL, NULL);
+    fpin = fopen(fnam, "r");
+    assert(fpin);
+    fpout = fopen(tnam, "w");
+diff --git a/CONFIG/include/atlas_sys.h b/CONFIG/include/atlas_sys.h
+index b83a749..8902d38 100644
+--- a/CONFIG/include/atlas_sys.h
++++ b/CONFIG/include/atlas_sys.h
+@@ -216,12 +216,13 @@ static char *ATL_fgets_CWS(char *sout, int *plen, FILE *fpin)
+ 
+ static char *ATL_tmpnam(void)
+ {
+-   static char tnam[L_tmpnam];
++   static char *tnam;
+    static char FirstTime=1;
+    if (FirstTime)
+    {
+       FirstTime = 0;
+-      assert(tmpnam(tnam));
++      tnam = tempnam(NULL, NULL);
++      assert(tnam);
+    }
+    return(tnam);
+ }
+diff --git a/bin/atlas_install.c b/bin/atlas_install.c
+index 2753cbf..e49cc3e 100644
+--- a/bin/atlas_install.c
++++ b/bin/atlas_install.c
+@@ -662,7 +662,8 @@ void GoToTown(int ARCHDEF, int L1DEF, int TuneLA)
+ {
+    const char TR[2] = {'N','T'};
+    char prec[4] = {'d', 's', 'z', 'c'}, pre, upre, *typ;
+-   char ln[1024], tnam[256], ln2[512], ln3[512], fnam[128];
++   char ln[1024], ln2[512], ln3[512], fnam[128];
++   char *tnam;
+    char *mulinst, *peakstr, *peakstr2;
+    int nprec=4;
+    int iL1, lat, muladd, maused, latuse, lbnreg;
+@@ -681,7 +682,7 @@ void GoToTown(int ARCHDEF, int L1DEF, int TuneLA)
+    fpsum = fopen("INSTALL_LOG/SUMMARY.LOG", "a");
+    ATL_Cassert(fpsum, "OPENING INSTALL_LOG/SUMMARY.LOG", NULL);
+ 
+-   ATL_Cassert(tmpnam(tnam), "GETTING TEMPFILE", NULL);
++   ATL_Cassert((tnam = tempnam(NULL, NULL)), "GETTING TEMPFILE", NULL);
+ 
+    if (L1DEF)
+    {
+diff --git a/bin/extract.c b/bin/extract.c
+index 7a5a926..53fb8bf 100644
+--- a/bin/extract.c
++++ b/bin/extract.c
+@@ -3378,7 +3378,7 @@ void PushProc0(EXTENV *EE, EXTPROC **basep, EXTPROC **myfuncs, char *ln)
+    pp->argnams = KillWord(wp, wp);
+    pp->nargs = CountWords(pp->argnams);
+ 
+-   cp = tmpnam(NULL);
++   cp = tempnam(NULL, NULL);
+    if (cp == NULL) ExtErr(EE, "Out of tmpnams!!!");
+    i = Wstrlen(cp) + 1;
+    pp->FileNam = malloc(i*sizeof(char));
+diff --git a/include/atlas_mvtesttime.h b/include/atlas_mvtesttime.h
+index 9147fcb..ab6a99f 100644
+--- a/include/atlas_mvtesttime.h
++++ b/include/atlas_mvtesttime.h
+@@ -105,14 +105,15 @@ static int MVKernelFailsTest
+    char ln[4096];
+    char *sp;
+    int i, lda0;
+-   static char outnam[L_tmpnam];
++   static char* outnam;
+    static int FirstTime=1;
+ 
+    if (FirstTime)
+    {
+ 
+       FirstTime = 0;
+-      assert(tmpnam(outnam));
++      outnam = tempnam(NULL, NULL);
++      assert(outnam);
+    }
+ /*
+  * If the file is generated, call generator to create it
+@@ -221,14 +222,15 @@ static double TimeMVKernel
+    char ln[2048], resf[256], *sp;
+    double *dp, mf;
+    int i, align = pre2size(pre);
+-   static char outnam[L_tmpnam];
++   static char* outnam;
+    static int FirstTime=1;
+ 
+    if (FirstTime)
+    {
+ 
+       FirstTime = 0;
+-      assert(tmpnam(outnam));
++      outnam = tempnam(NULL, NULL);
++      assert(outnam);
+    }
+ /*
+  * If the file is generated, call generator to create it
+diff --git a/include/atlas_r1testtime.h b/include/atlas_r1testtime.h
+index b33213a..f27ee25 100644
+--- a/include/atlas_r1testtime.h
++++ b/include/atlas_r1testtime.h
+@@ -76,14 +76,15 @@ static int R1KernelFailsTest
+    char ln[4096];
+    char *sp;
+    int i, lda0;
+-   static char outnam[L_tmpnam];
++   static char* outnam;
+    static int FirstTime=1;
+ 
+    if (FirstTime)
+    {
+ 
+       FirstTime = 0;
+-      assert(tmpnam(outnam));
++      outnam = tempnam(NULL, NULL);
++      assert(outnam);
+    }
+ /*
+  * If the file is generated, call generator to create it
+@@ -187,14 +188,15 @@ static double TimeR1Kernel
+    char ln[2048], resf[256], *sp;
+    double *dp, mf;
+    int i, align = pre2size(pre);
+-   static char outnam[L_tmpnam];
++   static char* outnam;
+    static int FirstTime=1;
+ 
+    if (FirstTime)
+    {
+ 
+       FirstTime = 0;
+-      assert(tmpnam(outnam));
++      outnam = tempnam(NULL, NULL);
++      assert(outnam);
+    }
+ /*
+  * If the file is generated, call generator to create it
+diff --git a/include/atlas_r2testtime.h b/include/atlas_r2testtime.h
+index facc66d..c638dce 100644
+--- a/include/atlas_r2testtime.h
++++ b/include/atlas_r2testtime.h
+@@ -76,14 +76,15 @@ static int R2KernelFailsTest
+    char ln[4096];
+    char *sp;
+    int i, lda0;
+-   static char outnam[L_tmpnam];
++   static char* outnam;
+    static int FirstTime=1;
+ 
+    if (FirstTime)
+    {
+ 
+       FirstTime = 0;
+-      assert(tmpnam(outnam));
++      outnam = tempnam(NULL, NULL);
++      assert(outnam);
+    }
+ /*
+  * If the file is generated, call generator to create it
+@@ -187,14 +188,15 @@ static double TimeR2Kernel
+    char ln[2048], resf[256], *sp;
+    double *dp, mf;
+    int i, align = pre2size(pre);
+-   static char outnam[L_tmpnam];
++   static char* outnam;
+    static int FirstTime=1;
+ 
+    if (FirstTime)
+    {
+ 
+       FirstTime = 0;
+-      assert(tmpnam(outnam));
++      outnam = tempnam(NULL, NULL);
++      assert(outnam);
+    }
+ /*
+  * If the file is generated, call generator to create it
+diff --git a/include/atlas_sys.h b/include/atlas_sys.h
+index b83a749..b3f88d2 100644
+--- a/include/atlas_sys.h
++++ b/include/atlas_sys.h
+@@ -216,12 +216,13 @@ static char *ATL_fgets_CWS(char *sout, int *plen, FILE *fpin)
+ 
+ static char *ATL_tmpnam(void)
+ {
+-   static char tnam[L_tmpnam];
++   static char* tnam;
+    static char FirstTime=1;
+    if (FirstTime)
+    {
+       FirstTime = 0;
+-      assert(tmpnam(tnam));
++      tnam = tempnam(NULL, NULL);
++      assert(tnam);
+    }
+    return(tnam);
+ }
+diff --git a/tune/blas/gemm/usercomb.c b/tune/blas/gemm/usercomb.c
+index 59a7cd4..eb3eb05 100644
+--- a/tune/blas/gemm/usercomb.c
++++ b/tune/blas/gemm/usercomb.c
+@@ -138,11 +138,13 @@ int GetUserCase(char pre, int icase, int *iflag, int *mb, int *nb, int *kb,
+ 
+ void CombineFiles(char *fout, int nfiles, char **fnams)
+ {
+-   char tnam[256], ln[512];
++   char ln[512];
++   char *tnam;
+    int i, j, n, nn;
+    FILE *fpout, *fpin;
+ 
+-   assert(tmpnam(tnam));
++   tnam = tempnam(NULL, NULL);
++   assert(tnam);
+    for (n=i=0; i < nfiles; i++) n += NumUserCases0(fnams[i]);
+ 
+    fpout = fopen(tnam, "w");
+diff --git a/tune/blas/gemm/userflag.c b/tune/blas/gemm/userflag.c
+index c3983e4..b7dd70b 100644
+--- a/tune/blas/gemm/userflag.c
++++ b/tune/blas/gemm/userflag.c
+@@ -139,8 +139,8 @@ int GetUserCase(char pre, int icase, int *iflag, int *mb, int *nb, int *kb,
+ 
+ void GoGetThem(char *infile, char *outfile)
+ {
+-   char ln[512], ln2[512], tnam[256], MCC[256], MMFLAGS[256];
+-   char *chkfile = "FlagCheck.c", *sp, *sp2;
++   char ln[512], ln2[512], MCC[256], MMFLAGS[256];
++   char *chkfile = "FlagCheck.c", *sp, *sp2, *tnam;
+    FILE *fpin, *fpout;
+    int i, j, n, nmin=0, good;
+    int wass;
+@@ -152,7 +152,8 @@ void GoGetThem(char *infile, char *outfile)
+    n = NumUserCases0(infile);
+    fpin = fopen(infile, "r");
+    assert(fpin);
+-   assert(tmpnam(tnam));
++   tnam = tempnam(NULL, NULL);
++   assert(tnam);
+    fpout = fopen(tnam, "w");
+    assert(fpout);
+    assert(fgets(ln, 512, fpin));
+diff --git a/tune/sysinfo/emit_buildinfo.c b/tune/sysinfo/emit_buildinfo.c
+index 309c06a..3feaea7 100644
+--- a/tune/sysinfo/emit_buildinfo.c
++++ b/tune/sysinfo/emit_buildinfo.c
+@@ -41,14 +41,15 @@ static char SMCVERS[LNLEN], DMCVERS[LNLEN], SKCVERS[LNLEN], DKCVERS[LNLEN];
+ static char UNAM[64], DATE[128];
+ char *CmndResults(char *cmnd)
+ {
+-   static char tnam[128];
++   static char* tnam;
+    static int FirstTime=1;
+    char ln[512];
+ 
+    if (FirstTime)
+    {
+       FirstTime = 0;
+-      assert(tmpnam(tnam));
++      tnam = tempnam(NULL, NULL);
++      assert(tnam);
+    }
+    sprintf(ln, "%s > %s\n", cmnd, tnam);
+    fprintf(stderr, "system: %s", ln);