From: Augustin Degomme <adegomme@users.noreply.github.com>
Date: Sat, 24 Oct 2020 15:30:39 +0000 (+0200)
Subject: add -lm to flags on smpicc smpicxx.
X-Git-Tag: v3.26~242
X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/7b21162e1dde8f8d4b9d85c53fdbb6b5bd2eca6e

add -lm to flags on smpicc smpicxx.
We already had these in smpif90/ff, anf gcc10 seems to not be using it by default.
So this could help compatibility with some (proxy apps) codes, if harmless on other setups. Let's see.
---

diff --git a/src/smpi/smpicc.in b/src/smpi/smpicc.in
index 7661c53e15..19e6f14f0d 100755
--- a/src/smpi/smpicc.in
+++ b/src/smpi/smpicc.in
@@ -37,7 +37,7 @@ elif [ "x@APPLE@" = "x1" ]; then
        echo "Warning: smpicc pretends to be a regular compiler (SMPI_PRETEND_CC is set). Produced binaries will not be usable in SimGrid."
     fi
     if [ "x${SMPI_NO_UNDEFINED_CHECK}" = "x" ]; then
-      list_add LINKARGS "-lsimgrid" ${LINKER_UNDEFINED_ERROR:+"-Wl,-undefined,error"}
+      list_add LINKARGS "-lsimgrid" "-lm" ${LINKER_UNDEFINED_ERROR:+"-Wl,-undefined,error"}
     fi
 else
     list_add CFLAGS "-fPIC"
@@ -48,7 +48,7 @@ else
        echo "Warning: smpicc pretends to be a regular compiler (SMPI_PRETEND_CC is set). Produced binaries will not be usable in SimGrid."
     fi
     if [ "x${SMPI_NO_UNDEFINED_CHECK}" = "x" ]; then
-      list_add LINKARGS "-lsimgrid" ${LINKER_UNDEFINED_ERROR:+"-Wl,-z,defs"}
+      list_add LINKARGS "-lsimgrid" "-lm" ${LINKER_UNDEFINED_ERROR:+"-Wl,-z,defs"}
     fi
 fi
 
diff --git a/src/smpi/smpicxx.in b/src/smpi/smpicxx.in
index c4af9cff96..5c7d39c210 100755
--- a/src/smpi/smpicxx.in
+++ b/src/smpi/smpicxx.in
@@ -37,7 +37,7 @@ elif [ "x@APPLE@" = "x1" ]; then
        echo "Warning: smpicc pretends to be a regular compiler (SMPI_PRETEND_CC is set). Produced binaries will not be usable in SimGrid."
     fi
     if [ "x${SMPI_NO_UNDEFINED_CHECK}" = "x" ]; then
-      list_add LINKARGS "-lsimgrid" ${LINKER_UNDEFINED_ERROR:+"-Wl,-undefined,error"}
+      list_add LINKARGS "-lsimgrid" "-lm" ${LINKER_UNDEFINED_ERROR:+"-Wl,-undefined,error"}
     fi
 else
     list_add CXXFLAGS "-fPIC"
@@ -48,7 +48,7 @@ else
        echo "Warning: smpicc pretends to be a regular compiler (SMPI_PRETEND_CC is set). Produced binaries will not be usable in SimGrid."
     fi
     if [ "x${SMPI_NO_UNDEFINED_CHECK}" = "x" ]; then
-      list_add LINKARGS "-lsimgrid" ${LINKER_UNDEFINED_ERROR:+"-Wl,-z,defs"}
+      list_add LINKARGS "-lsimgrid" "-lm"  ${LINKER_UNDEFINED_ERROR:+"-Wl,-z,defs"}
     fi
 fi