X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=configure;h=2065fcdf6f4ce3af7b5570b3092804027af68df9;hp=a6b49ae4d0dc1fbac54ccc692019f49a964bd73e;hb=ccd7c0b0e6222ca41670eb9a29cc1f9346dad772;hpb=d241a486facf1002b29e499c2fb96a302bfd825b

diff --git a/configure b/configure
index a6b49ae4..2065fcdf 100755
--- a/configure
+++ b/configure
@@ -47,6 +47,7 @@ CC=${CC:-cc}
 CXX=${CXX:-c++}
 CFLAGS=${CFLAGS:--g -O2}
 CPPFLAGS=${CPPFLAGS:-}
+CXXFLAGS_for_sh=${CXXFLAGS:-${CFLAGS}}
 CXXFLAGS=${CXXFLAGS:-\$(CFLAGS)}
 LDFLAGS=${LDFLAGS:-}
 XAPIAN_CONFIG=${XAPIAN_CONFIG:-xapian-config}
@@ -269,6 +270,35 @@ dependencies are available:
 EOF
 
 errors=0
+printf "int main(void){return 0;}\n" > minimal.c
+
+printf "Sanity checking C compilation environment... "
+if ${CC} ${CFLAGS} ${CPPFLAGS} minimal.c ${LDFLAGS} -o minimal > /dev/null 2>&1
+then
+    printf "OK.\n"
+else
+    printf "Fail.\n"
+    errors=$((errors + 1))
+fi
+
+printf "Sanity checking C++ compilation environment... "
+if ${CXX} ${CXXFLAGS_for_sh} ${CPPFLAGS} minimal.c ${LDFLAGS} -o minimal > /dev/null 2>&1
+then
+    printf "OK.\n"
+else
+    printf "Fail.\n"
+    errors=$((errors + 1))
+fi
+
+if [ $errors -gt 0 ]; then
+    cat <<EOF
+*** Error: Initial sanity checking of environment failed.  Please try
+running configure in a clean environment, and if the problem persists,
+report a bug.
+EOF
+    rm -f minimal minimal.c
+    exit 1
+fi
 
 if pkg-config --version > /dev/null 2>&1; then
     have_pkg_config=1
@@ -378,7 +408,7 @@ printf "Checking for python... "
 have_python=0
 
 for name in python python2 python3; do
-    if command -v $name > /dev/null 2>&1; then
+    if command -v $name > /dev/null; then
 	have_python=1
 	python=$name
 	printf "Yes ($name).\n"
@@ -435,7 +465,7 @@ else
 fi
 
 printf "Checking if doxygen is available... "
-if command -v doxygen > /dev/null 2>&1; then
+if command -v doxygen > /dev/null; then
     printf "Yes.\n"
     have_doxygen=1
 else
@@ -444,7 +474,7 @@ else
 fi
 
 printf "Checking if sphinx is available and supports nroff output... "
-if hash sphinx-build > /dev/null 2>&1 && ${python} -m sphinx.writers.manpage > /dev/null 2>&1 ; then
+if command -v sphinx-build > /dev/null && ${python} -m sphinx.writers.manpage > /dev/null 2>&1 ; then
     printf "Yes.\n"
     have_sphinx=1
 else
@@ -690,8 +720,6 @@ else
 fi
 rm -f compat/check_asctime
 
-printf "int main(void){return 0;}\n" > minimal.c
-
 printf "Checking for rpath support... "
 if ${CC} -Wl,--enable-new-dtags -Wl,-rpath,/tmp/ -o minimal minimal.c >/dev/null 2>&1
 then